diff --git a/libs/ktem/ktem/app.py b/libs/ktem/ktem/app.py
index 4c4c5d6..b56612b 100644
--- a/libs/ktem/ktem/app.py
+++ b/libs/ktem/ktem/app.py
@@ -55,6 +55,8 @@ class BaseApp:
                 "PDFJS_PREBUILT_DIR",
                 pdf_js_dist_dir,
             )
+        with (dir_assets / "js" / "svg-pan-zoom.min.js").open() as fi:
+            self._svg_js = fi.read()
 
         self._favicon = str(dir_assets / "img" / "favicon.svg")
 
@@ -172,6 +174,9 @@ class BaseApp:
             "<script type='module' "
             "src='https://cdn.skypack.dev/pdfjs-viewer-element'>"
             "</script>"
+            "<script>"
+            f"{self._svg_js}"
+            "</script>"
         )
 
         with gr.Blocks(
diff --git a/libs/ktem/ktem/assets/js/svg-pan-zoom.min.js b/libs/ktem/ktem/assets/js/svg-pan-zoom.min.js
new file mode 100644
index 0000000..0e3558a
--- /dev/null
+++ b/libs/ktem/ktem/assets/js/svg-pan-zoom.min.js
@@ -0,0 +1,3 @@
+// svg-pan-zoom v3.6.2
+// https://github.com/bumbu/svg-pan-zoom
+!function s(r,a,l){function u(e,t){if(!a[e]){if(!r[e]){var o="function"==typeof require&&require;if(!t&&o)return o(e,!0);if(h)return h(e,!0);var n=new Error("Cannot find module '"+e+"'");throw n.code="MODULE_NOT_FOUND",n}var i=a[e]={exports:{}};r[e][0].call(i.exports,function(t){return u(r[e][1][t]||t)},i,i.exports,s,r,a,l)}return a[e].exports}for(var h="function"==typeof require&&require,t=0;t<l.length;t++)u(l[t]);return u}({1:[function(t,e,o){var s=t("./svg-utilities");e.exports={enable:function(t){var e=t.svg.querySelector("defs");if(e||(e=document.createElementNS(s.svgNS,"defs"),t.svg.appendChild(e)),!e.querySelector("style#svg-pan-zoom-controls-styles")){var o=document.createElementNS(s.svgNS,"style");o.setAttribute("id","svg-pan-zoom-controls-styles"),o.setAttribute("type","text/css"),o.textContent=".svg-pan-zoom-control { cursor: pointer; fill: black; fill-opacity: 0.333; } .svg-pan-zoom-control:hover { fill-opacity: 0.8; } .svg-pan-zoom-control-background { fill: white; fill-opacity: 0.5; } .svg-pan-zoom-control-background { fill-opacity: 0.8; }",e.appendChild(o)}var n=document.createElementNS(s.svgNS,"g");n.setAttribute("id","svg-pan-zoom-controls"),n.setAttribute("transform","translate("+(t.width-70)+" "+(t.height-76)+") scale(0.75)"),n.setAttribute("class","svg-pan-zoom-control"),n.appendChild(this._createZoomIn(t)),n.appendChild(this._createZoomReset(t)),n.appendChild(this._createZoomOut(t)),t.svg.appendChild(n),t.controlIcons=n},_createZoomIn:function(t){var e=document.createElementNS(s.svgNS,"g");e.setAttribute("id","svg-pan-zoom-zoom-in"),e.setAttribute("transform","translate(30.5 5) scale(0.015)"),e.setAttribute("class","svg-pan-zoom-control"),e.addEventListener("click",function(){t.getPublicInstance().zoomIn()},!1),e.addEventListener("touchstart",function(){t.getPublicInstance().zoomIn()},!1);var o=document.createElementNS(s.svgNS,"rect");o.setAttribute("x","0"),o.setAttribute("y","0"),o.setAttribute("width","1500"),o.setAttribute("height","1400"),o.setAttribute("class","svg-pan-zoom-control-background"),e.appendChild(o);var n=document.createElementNS(s.svgNS,"path");return n.setAttribute("d","M1280 576v128q0 26 -19 45t-45 19h-320v320q0 26 -19 45t-45 19h-128q-26 0 -45 -19t-19 -45v-320h-320q-26 0 -45 -19t-19 -45v-128q0 -26 19 -45t45 -19h320v-320q0 -26 19 -45t45 -19h128q26 0 45 19t19 45v320h320q26 0 45 19t19 45zM1536 1120v-960 q0 -119 -84.5 -203.5t-203.5 -84.5h-960q-119 0 -203.5 84.5t-84.5 203.5v960q0 119 84.5 203.5t203.5 84.5h960q119 0 203.5 -84.5t84.5 -203.5z"),n.setAttribute("class","svg-pan-zoom-control-element"),e.appendChild(n),e},_createZoomReset:function(t){var e=document.createElementNS(s.svgNS,"g");e.setAttribute("id","svg-pan-zoom-reset-pan-zoom"),e.setAttribute("transform","translate(5 35) scale(0.4)"),e.setAttribute("class","svg-pan-zoom-control"),e.addEventListener("click",function(){t.getPublicInstance().reset()},!1),e.addEventListener("touchstart",function(){t.getPublicInstance().reset()},!1);var o=document.createElementNS(s.svgNS,"rect");o.setAttribute("x","2"),o.setAttribute("y","2"),o.setAttribute("width","182"),o.setAttribute("height","58"),o.setAttribute("class","svg-pan-zoom-control-background"),e.appendChild(o);var n=document.createElementNS(s.svgNS,"path");n.setAttribute("d","M33.051,20.632c-0.742-0.406-1.854-0.609-3.338-0.609h-7.969v9.281h7.769c1.543,0,2.701-0.188,3.473-0.562c1.365-0.656,2.048-1.953,2.048-3.891C35.032,22.757,34.372,21.351,33.051,20.632z"),n.setAttribute("class","svg-pan-zoom-control-element"),e.appendChild(n);var i=document.createElementNS(s.svgNS,"path");return i.setAttribute("d","M170.231,0.5H15.847C7.102,0.5,0.5,5.708,0.5,11.84v38.861C0.5,56.833,7.102,61.5,15.847,61.5h154.384c8.745,0,15.269-4.667,15.269-10.798V11.84C185.5,5.708,178.976,0.5,170.231,0.5z M42.837,48.569h-7.969c-0.219-0.766-0.375-1.383-0.469-1.852c-0.188-0.969-0.289-1.961-0.305-2.977l-0.047-3.211c-0.03-2.203-0.41-3.672-1.142-4.406c-0.732-0.734-2.103-1.102-4.113-1.102h-7.05v13.547h-7.055V14.022h16.524c2.361,0.047,4.178,0.344,5.45,0.891c1.272,0.547,2.351,1.352,3.234,2.414c0.731,0.875,1.31,1.844,1.737,2.906s0.64,2.273,0.64,3.633c0,1.641-0.414,3.254-1.242,4.84s-2.195,2.707-4.102,3.363c1.594,0.641,2.723,1.551,3.387,2.73s0.996,2.98,0.996,5.402v2.32c0,1.578,0.063,2.648,0.19,3.211c0.19,0.891,0.635,1.547,1.333,1.969V48.569z M75.579,48.569h-26.18V14.022h25.336v6.117H56.454v7.336h16.781v6H56.454v8.883h19.125V48.569z M104.497,46.331c-2.44,2.086-5.887,3.129-10.34,3.129c-4.548,0-8.125-1.027-10.731-3.082s-3.909-4.879-3.909-8.473h6.891c0.224,1.578,0.662,2.758,1.316,3.539c1.196,1.422,3.246,2.133,6.15,2.133c1.739,0,3.151-0.188,4.236-0.562c2.058-0.719,3.087-2.055,3.087-4.008c0-1.141-0.504-2.023-1.512-2.648c-1.008-0.609-2.607-1.148-4.796-1.617l-3.74-0.82c-3.676-0.812-6.201-1.695-7.576-2.648c-2.328-1.594-3.492-4.086-3.492-7.477c0-3.094,1.139-5.664,3.417-7.711s5.623-3.07,10.036-3.07c3.685,0,6.829,0.965,9.431,2.895c2.602,1.93,3.966,4.73,4.093,8.402h-6.938c-0.128-2.078-1.057-3.555-2.787-4.43c-1.154-0.578-2.587-0.867-4.301-0.867c-1.907,0-3.428,0.375-4.565,1.125c-1.138,0.75-1.706,1.797-1.706,3.141c0,1.234,0.561,2.156,1.682,2.766c0.721,0.406,2.25,0.883,4.589,1.43l6.063,1.43c2.657,0.625,4.648,1.461,5.975,2.508c2.059,1.625,3.089,3.977,3.089,7.055C108.157,41.624,106.937,44.245,104.497,46.331z M139.61,48.569h-26.18V14.022h25.336v6.117h-18.281v7.336h16.781v6h-16.781v8.883h19.125V48.569z M170.337,20.14h-10.336v28.43h-7.266V20.14h-10.383v-6.117h27.984V20.14z"),i.setAttribute("class","svg-pan-zoom-control-element"),e.appendChild(i),e},_createZoomOut:function(t){var e=document.createElementNS(s.svgNS,"g");e.setAttribute("id","svg-pan-zoom-zoom-out"),e.setAttribute("transform","translate(30.5 70) scale(0.015)"),e.setAttribute("class","svg-pan-zoom-control"),e.addEventListener("click",function(){t.getPublicInstance().zoomOut()},!1),e.addEventListener("touchstart",function(){t.getPublicInstance().zoomOut()},!1);var o=document.createElementNS(s.svgNS,"rect");o.setAttribute("x","0"),o.setAttribute("y","0"),o.setAttribute("width","1500"),o.setAttribute("height","1400"),o.setAttribute("class","svg-pan-zoom-control-background"),e.appendChild(o);var n=document.createElementNS(s.svgNS,"path");return n.setAttribute("d","M1280 576v128q0 26 -19 45t-45 19h-896q-26 0 -45 -19t-19 -45v-128q0 -26 19 -45t45 -19h896q26 0 45 19t19 45zM1536 1120v-960q0 -119 -84.5 -203.5t-203.5 -84.5h-960q-119 0 -203.5 84.5t-84.5 203.5v960q0 119 84.5 203.5t203.5 84.5h960q119 0 203.5 -84.5 t84.5 -203.5z"),n.setAttribute("class","svg-pan-zoom-control-element"),e.appendChild(n),e},disable:function(t){t.controlIcons&&(t.controlIcons.parentNode.removeChild(t.controlIcons),t.controlIcons=null)}}},{"./svg-utilities":5}],2:[function(t,e,o){function n(t,e){this.init(t,e)}var i=t("./svg-utilities"),r=t("./utilities");n.prototype.init=function(t,e){this.viewport=t,this.options=e,this.originalState={zoom:1,x:0,y:0},this.activeState={zoom:1,x:0,y:0},this.updateCTMCached=r.proxy(this.updateCTM,this),this.requestAnimationFrame=r.createRequestAnimationFrame(this.options.refreshRate),this.viewBox={x:0,y:0,width:0,height:0},this.cacheViewBox();var o=this.processCTM();this.setCTM(o),this.updateCTM()},n.prototype.cacheViewBox=function(){var t=this.options.svg.getAttribute("viewBox");if(t){var e=t.split(/[\s\,]/).filter(function(t){return t}).map(parseFloat);this.viewBox.x=e[0],this.viewBox.y=e[1],this.viewBox.width=e[2],this.viewBox.height=e[3];var o=Math.min(this.options.width/this.viewBox.width,this.options.height/this.viewBox.height);this.activeState.zoom=o,this.activeState.x=(this.options.width-this.viewBox.width*o)/2,this.activeState.y=(this.options.height-this.viewBox.height*o)/2,this.updateCTMOnNextFrame(),this.options.svg.removeAttribute("viewBox")}else this.simpleViewBoxCache()},n.prototype.simpleViewBoxCache=function(){var t=this.viewport.getBBox();this.viewBox.x=t.x,this.viewBox.y=t.y,this.viewBox.width=t.width,this.viewBox.height=t.height},n.prototype.getViewBox=function(){return r.extend({},this.viewBox)},n.prototype.processCTM=function(){var t,e=this.getCTM();(this.options.fit||this.options.contain)&&(t=this.options.fit?Math.min(this.options.width/this.viewBox.width,this.options.height/this.viewBox.height):Math.max(this.options.width/this.viewBox.width,this.options.height/this.viewBox.height),e.a=t,e.d=t,e.e=-this.viewBox.x*t,e.f=-this.viewBox.y*t);if(this.options.center){var o=.5*(this.options.width-(this.viewBox.width+2*this.viewBox.x)*e.a),n=.5*(this.options.height-(this.viewBox.height+2*this.viewBox.y)*e.a);e.e=o,e.f=n}return this.originalState.zoom=e.a,this.originalState.x=e.e,this.originalState.y=e.f,e},n.prototype.getOriginalState=function(){return r.extend({},this.originalState)},n.prototype.getState=function(){return r.extend({},this.activeState)},n.prototype.getZoom=function(){return this.activeState.zoom},n.prototype.getRelativeZoom=function(){return this.activeState.zoom/this.originalState.zoom},n.prototype.computeRelativeZoom=function(t){return t/this.originalState.zoom},n.prototype.getPan=function(){return{x:this.activeState.x,y:this.activeState.y}},n.prototype.getCTM=function(){var t=this.options.svg.createSVGMatrix();return t.a=this.activeState.zoom,t.b=0,t.c=0,t.d=this.activeState.zoom,t.e=this.activeState.x,t.f=this.activeState.y,t},n.prototype.setCTM=function(t){var e=this.isZoomDifferent(t),o=this.isPanDifferent(t);if(e||o){if(e&&(!1===this.options.beforeZoom(this.getRelativeZoom(),this.computeRelativeZoom(t.a))?(t.a=t.d=this.activeState.zoom,e=!1):(this.updateCache(t),this.options.onZoom(this.getRelativeZoom()))),o){var n=this.options.beforePan(this.getPan(),{x:t.e,y:t.f}),i=!1,s=!1;!1===n?(t.e=this.getPan().x,t.f=this.getPan().y,i=s=!0):r.isObject(n)&&(!1===n.x?(t.e=this.getPan().x,i=!0):r.isNumber(n.x)&&(t.e=n.x),!1===n.y?(t.f=this.getPan().y,s=!0):r.isNumber(n.y)&&(t.f=n.y)),i&&s||!this.isPanDifferent(t)?o=!1:(this.updateCache(t),this.options.onPan(this.getPan()))}(e||o)&&this.updateCTMOnNextFrame()}},n.prototype.isZoomDifferent=function(t){return this.activeState.zoom!==t.a},n.prototype.isPanDifferent=function(t){return this.activeState.x!==t.e||this.activeState.y!==t.f},n.prototype.updateCache=function(t){this.activeState.zoom=t.a,this.activeState.x=t.e,this.activeState.y=t.f},n.prototype.pendingUpdate=!1,n.prototype.updateCTMOnNextFrame=function(){this.pendingUpdate||(this.pendingUpdate=!0,this.requestAnimationFrame.call(window,this.updateCTMCached))},n.prototype.updateCTM=function(){var t=this.getCTM();i.setCTM(this.viewport,t,this.defs),this.pendingUpdate=!1,this.options.onUpdatedCTM&&this.options.onUpdatedCTM(t)},e.exports=function(t,e){return new n(t,e)}},{"./svg-utilities":5,"./utilities":7}],3:[function(t,e,o){var n,i=t("./svg-pan-zoom.js");n=window,document,"function"==typeof define&&define.amd?define("svg-pan-zoom",function(){return i}):void 0!==e&&e.exports&&(e.exports=i,n.svgPanZoom=i)},{"./svg-pan-zoom.js":4}],4:[function(t,e,o){function i(t,e){this.init(t,e)}var n=t("./uniwheel"),s=t("./control-icons"),r=t("./utilities"),a=t("./svg-utilities"),l=t("./shadow-viewport"),u={viewportSelector:".svg-pan-zoom_viewport",panEnabled:!0,controlIconsEnabled:!1,zoomEnabled:!0,dblClickZoomEnabled:!0,mouseWheelZoomEnabled:!0,preventMouseEventsDefault:!0,zoomScaleSensitivity:.1,minZoom:.5,maxZoom:10,fit:!0,contain:!1,center:!0,refreshRate:"auto",beforeZoom:null,onZoom:null,beforePan:null,onPan:null,customEventsHandler:null,eventsListenerElement:null,onUpdatedCTM:null},h={passive:!0};i.prototype.init=function(t,e){var o=this;this.svg=t,this.defs=t.querySelector("defs"),a.setupSvgAttributes(this.svg),this.options=r.extend(r.extend({},u),e),this.state="none";var n=a.getBoundingClientRectNormalized(t);this.width=n.width,this.height=n.height,this.viewport=l(a.getOrCreateViewport(this.svg,this.options.viewportSelector),{svg:this.svg,width:this.width,height:this.height,fit:this.options.fit,contain:this.options.contain,center:this.options.center,refreshRate:this.options.refreshRate,beforeZoom:function(t,e){if(o.viewport&&o.options.beforeZoom)return o.options.beforeZoom(t,e)},onZoom:function(t){if(o.viewport&&o.options.onZoom)return o.options.onZoom(t)},beforePan:function(t,e){if(o.viewport&&o.options.beforePan)return o.options.beforePan(t,e)},onPan:function(t){if(o.viewport&&o.options.onPan)return o.options.onPan(t)},onUpdatedCTM:function(t){if(o.viewport&&o.options.onUpdatedCTM)return o.options.onUpdatedCTM(t)}});var i=this.getPublicInstance();i.setBeforeZoom(this.options.beforeZoom),i.setOnZoom(this.options.onZoom),i.setBeforePan(this.options.beforePan),i.setOnPan(this.options.onPan),i.setOnUpdatedCTM(this.options.onUpdatedCTM),this.options.controlIconsEnabled&&s.enable(this),this.lastMouseWheelEventTime=Date.now(),this.setupHandlers()},i.prototype.setupHandlers=function(){var o=this,n=null;if(this.eventListeners={mousedown:function(t){var e=o.handleMouseDown(t,n);return n=t,e},touchstart:function(t){var e=o.handleMouseDown(t,n);return n=t,e},mouseup:function(t){return o.handleMouseUp(t)},touchend:function(t){return o.handleMouseUp(t)},mousemove:function(t){return o.handleMouseMove(t)},touchmove:function(t){return o.handleMouseMove(t)},mouseleave:function(t){return o.handleMouseUp(t)},touchleave:function(t){return o.handleMouseUp(t)},touchcancel:function(t){return o.handleMouseUp(t)}},null!=this.options.customEventsHandler){this.options.customEventsHandler.init({svgElement:this.svg,eventsListenerElement:this.options.eventsListenerElement,instance:this.getPublicInstance()});var t=this.options.customEventsHandler.haltEventListeners;if(t&&t.length)for(var e=t.length-1;0<=e;e--)this.eventListeners.hasOwnProperty(t[e])&&delete this.eventListeners[t[e]]}for(var i in this.eventListeners)(this.options.eventsListenerElement||this.svg).addEventListener(i,this.eventListeners[i],!this.options.preventMouseEventsDefault&&h);this.options.mouseWheelZoomEnabled&&(this.options.mouseWheelZoomEnabled=!1,this.enableMouseWheelZoom())},i.prototype.enableMouseWheelZoom=function(){if(!this.options.mouseWheelZoomEnabled){var e=this;this.wheelListener=function(t){return e.handleMouseWheel(t)};var t=!this.options.preventMouseEventsDefault;n.on(this.options.eventsListenerElement||this.svg,this.wheelListener,t),this.options.mouseWheelZoomEnabled=!0}},i.prototype.disableMouseWheelZoom=function(){if(this.options.mouseWheelZoomEnabled){var t=!this.options.preventMouseEventsDefault;n.off(this.options.eventsListenerElement||this.svg,this.wheelListener,t),this.options.mouseWheelZoomEnabled=!1}},i.prototype.handleMouseWheel=function(t){if(this.options.zoomEnabled&&"none"===this.state){this.options.preventMouseEventsDefault&&(t.preventDefault?t.preventDefault():t.returnValue=!1);var e=t.deltaY||1,o=Date.now()-this.lastMouseWheelEventTime,n=3+Math.max(0,30-o);this.lastMouseWheelEventTime=Date.now(),"deltaMode"in t&&0===t.deltaMode&&t.wheelDelta&&(e=0===t.deltaY?0:Math.abs(t.wheelDelta)/t.deltaY),e=-.3<e&&e<.3?e:(0<e?1:-1)*Math.log(Math.abs(e)+10)/n;var i=this.svg.getScreenCTM().inverse(),s=a.getEventPoint(t,this.svg).matrixTransform(i),r=Math.pow(1+this.options.zoomScaleSensitivity,-1*e);this.zoomAtPoint(r,s)}},i.prototype.zoomAtPoint=function(t,e,o){var n=this.viewport.getOriginalState();o?(t=Math.max(this.options.minZoom*n.zoom,Math.min(this.options.maxZoom*n.zoom,t)),t/=this.getZoom()):this.getZoom()*t<this.options.minZoom*n.zoom?t=this.options.minZoom*n.zoom/this.getZoom():this.getZoom()*t>this.options.maxZoom*n.zoom&&(t=this.options.maxZoom*n.zoom/this.getZoom());var i=this.viewport.getCTM(),s=e.matrixTransform(i.inverse()),r=this.svg.createSVGMatrix().translate(s.x,s.y).scale(t).translate(-s.x,-s.y),a=i.multiply(r);a.a!==i.a&&this.viewport.setCTM(a)},i.prototype.zoom=function(t,e){this.zoomAtPoint(t,a.getSvgCenterPoint(this.svg,this.width,this.height),e)},i.prototype.publicZoom=function(t,e){e&&(t=this.computeFromRelativeZoom(t)),this.zoom(t,e)},i.prototype.publicZoomAtPoint=function(t,e,o){if(o&&(t=this.computeFromRelativeZoom(t)),"SVGPoint"!==r.getType(e)){if(!("x"in e&&"y"in e))throw new Error("Given point is invalid");e=a.createSVGPoint(this.svg,e.x,e.y)}this.zoomAtPoint(t,e,o)},i.prototype.getZoom=function(){return this.viewport.getZoom()},i.prototype.getRelativeZoom=function(){return this.viewport.getRelativeZoom()},i.prototype.computeFromRelativeZoom=function(t){return t*this.viewport.getOriginalState().zoom},i.prototype.resetZoom=function(){var t=this.viewport.getOriginalState();this.zoom(t.zoom,!0)},i.prototype.resetPan=function(){this.pan(this.viewport.getOriginalState())},i.prototype.reset=function(){this.resetZoom(),this.resetPan()},i.prototype.handleDblClick=function(t){var e;if((this.options.preventMouseEventsDefault&&(t.preventDefault?t.preventDefault():t.returnValue=!1),this.options.controlIconsEnabled)&&-1<(t.target.getAttribute("class")||"").indexOf("svg-pan-zoom-control"))return!1;e=t.shiftKey?1/(2*(1+this.options.zoomScaleSensitivity)):2*(1+this.options.zoomScaleSensitivity);var o=a.getEventPoint(t,this.svg).matrixTransform(this.svg.getScreenCTM().inverse());this.zoomAtPoint(e,o)},i.prototype.handleMouseDown=function(t,e){this.options.preventMouseEventsDefault&&(t.preventDefault?t.preventDefault():t.returnValue=!1),r.mouseAndTouchNormalize(t,this.svg),this.options.dblClickZoomEnabled&&r.isDblClick(t,e)?this.handleDblClick(t):(this.state="pan",this.firstEventCTM=this.viewport.getCTM(),this.stateOrigin=a.getEventPoint(t,this.svg).matrixTransform(this.firstEventCTM.inverse()))},i.prototype.handleMouseMove=function(t){if(this.options.preventMouseEventsDefault&&(t.preventDefault?t.preventDefault():t.returnValue=!1),"pan"===this.state&&this.options.panEnabled){var e=a.getEventPoint(t,this.svg).matrixTransform(this.firstEventCTM.inverse()),o=this.firstEventCTM.translate(e.x-this.stateOrigin.x,e.y-this.stateOrigin.y);this.viewport.setCTM(o)}},i.prototype.handleMouseUp=function(t){this.options.preventMouseEventsDefault&&(t.preventDefault?t.preventDefault():t.returnValue=!1),"pan"===this.state&&(this.state="none")},i.prototype.fit=function(){var t=this.viewport.getViewBox(),e=Math.min(this.width/t.width,this.height/t.height);this.zoom(e,!0)},i.prototype.contain=function(){var t=this.viewport.getViewBox(),e=Math.max(this.width/t.width,this.height/t.height);this.zoom(e,!0)},i.prototype.center=function(){var t=this.viewport.getViewBox(),e=.5*(this.width-(t.width+2*t.x)*this.getZoom()),o=.5*(this.height-(t.height+2*t.y)*this.getZoom());this.getPublicInstance().pan({x:e,y:o})},i.prototype.updateBBox=function(){this.viewport.simpleViewBoxCache()},i.prototype.pan=function(t){var e=this.viewport.getCTM();e.e=t.x,e.f=t.y,this.viewport.setCTM(e)},i.prototype.panBy=function(t){var e=this.viewport.getCTM();e.e+=t.x,e.f+=t.y,this.viewport.setCTM(e)},i.prototype.getPan=function(){var t=this.viewport.getState();return{x:t.x,y:t.y}},i.prototype.resize=function(){var t=a.getBoundingClientRectNormalized(this.svg);this.width=t.width,this.height=t.height;var e=this.viewport;e.options.width=this.width,e.options.height=this.height,e.processCTM(),this.options.controlIconsEnabled&&(this.getPublicInstance().disableControlIcons(),this.getPublicInstance().enableControlIcons())},i.prototype.destroy=function(){var e=this;for(var t in this.beforeZoom=null,this.onZoom=null,this.beforePan=null,this.onPan=null,(this.onUpdatedCTM=null)!=this.options.customEventsHandler&&this.options.customEventsHandler.destroy({svgElement:this.svg,eventsListenerElement:this.options.eventsListenerElement,instance:this.getPublicInstance()}),this.eventListeners)(this.options.eventsListenerElement||this.svg).removeEventListener(t,this.eventListeners[t],!this.options.preventMouseEventsDefault&&h);this.disableMouseWheelZoom(),this.getPublicInstance().disableControlIcons(),this.reset(),c=c.filter(function(t){return t.svg!==e.svg}),delete this.options,delete this.viewport,delete this.publicInstance,delete this.pi,this.getPublicInstance=function(){return null}},i.prototype.getPublicInstance=function(){var o=this;return this.publicInstance||(this.publicInstance=this.pi={enablePan:function(){return o.options.panEnabled=!0,o.pi},disablePan:function(){return o.options.panEnabled=!1,o.pi},isPanEnabled:function(){return!!o.options.panEnabled},pan:function(t){return o.pan(t),o.pi},panBy:function(t){return o.panBy(t),o.pi},getPan:function(){return o.getPan()},setBeforePan:function(t){return o.options.beforePan=null===t?null:r.proxy(t,o.publicInstance),o.pi},setOnPan:function(t){return o.options.onPan=null===t?null:r.proxy(t,o.publicInstance),o.pi},enableZoom:function(){return o.options.zoomEnabled=!0,o.pi},disableZoom:function(){return o.options.zoomEnabled=!1,o.pi},isZoomEnabled:function(){return!!o.options.zoomEnabled},enableControlIcons:function(){return o.options.controlIconsEnabled||(o.options.controlIconsEnabled=!0,s.enable(o)),o.pi},disableControlIcons:function(){return o.options.controlIconsEnabled&&(o.options.controlIconsEnabled=!1,s.disable(o)),o.pi},isControlIconsEnabled:function(){return!!o.options.controlIconsEnabled},enableDblClickZoom:function(){return o.options.dblClickZoomEnabled=!0,o.pi},disableDblClickZoom:function(){return o.options.dblClickZoomEnabled=!1,o.pi},isDblClickZoomEnabled:function(){return!!o.options.dblClickZoomEnabled},enableMouseWheelZoom:function(){return o.enableMouseWheelZoom(),o.pi},disableMouseWheelZoom:function(){return o.disableMouseWheelZoom(),o.pi},isMouseWheelZoomEnabled:function(){return!!o.options.mouseWheelZoomEnabled},setZoomScaleSensitivity:function(t){return o.options.zoomScaleSensitivity=t,o.pi},setMinZoom:function(t){return o.options.minZoom=t,o.pi},setMaxZoom:function(t){return o.options.maxZoom=t,o.pi},setBeforeZoom:function(t){return o.options.beforeZoom=null===t?null:r.proxy(t,o.publicInstance),o.pi},setOnZoom:function(t){return o.options.onZoom=null===t?null:r.proxy(t,o.publicInstance),o.pi},zoom:function(t){return o.publicZoom(t,!0),o.pi},zoomBy:function(t){return o.publicZoom(t,!1),o.pi},zoomAtPoint:function(t,e){return o.publicZoomAtPoint(t,e,!0),o.pi},zoomAtPointBy:function(t,e){return o.publicZoomAtPoint(t,e,!1),o.pi},zoomIn:function(){return this.zoomBy(1+o.options.zoomScaleSensitivity),o.pi},zoomOut:function(){return this.zoomBy(1/(1+o.options.zoomScaleSensitivity)),o.pi},getZoom:function(){return o.getRelativeZoom()},setOnUpdatedCTM:function(t){return o.options.onUpdatedCTM=null===t?null:r.proxy(t,o.publicInstance),o.pi},resetZoom:function(){return o.resetZoom(),o.pi},resetPan:function(){return o.resetPan(),o.pi},reset:function(){return o.reset(),o.pi},fit:function(){return o.fit(),o.pi},contain:function(){return o.contain(),o.pi},center:function(){return o.center(),o.pi},updateBBox:function(){return o.updateBBox(),o.pi},resize:function(){return o.resize(),o.pi},getSizes:function(){return{width:o.width,height:o.height,realZoom:o.getZoom(),viewBox:o.viewport.getViewBox()}},destroy:function(){return o.destroy(),o.pi}}),this.publicInstance};var c=[];e.exports=function(t,e){var o=r.getSvg(t);if(null===o)return null;for(var n=c.length-1;0<=n;n--)if(c[n].svg===o)return c[n].instance.getPublicInstance();return c.push({svg:o,instance:new i(o,e)}),c[c.length-1].instance.getPublicInstance()}},{"./control-icons":1,"./shadow-viewport":2,"./svg-utilities":5,"./uniwheel":6,"./utilities":7}],5:[function(t,e,o){var l=t("./utilities"),s="unknown";document.documentMode&&(s="ie"),e.exports={svgNS:"http://www.w3.org/2000/svg",xmlNS:"http://www.w3.org/XML/1998/namespace",xmlnsNS:"http://www.w3.org/2000/xmlns/",xlinkNS:"http://www.w3.org/1999/xlink",evNS:"http://www.w3.org/2001/xml-events",getBoundingClientRectNormalized:function(t){if(t.clientWidth&&t.clientHeight)return{width:t.clientWidth,height:t.clientHeight};if(t.getBoundingClientRect())return t.getBoundingClientRect();throw new Error("Cannot get BoundingClientRect for SVG.")},getOrCreateViewport:function(t,e){var o=null;if(!(o=l.isElement(e)?e:t.querySelector(e))){var n=Array.prototype.slice.call(t.childNodes||t.children).filter(function(t){return"defs"!==t.nodeName&&"#text"!==t.nodeName});1===n.length&&"g"===n[0].nodeName&&null===n[0].getAttribute("transform")&&(o=n[0])}if(!o){var i="viewport-"+(new Date).toISOString().replace(/\D/g,"");(o=document.createElementNS(this.svgNS,"g")).setAttribute("id",i);var s=t.childNodes||t.children;if(s&&0<s.length)for(var r=s.length;0<r;r--)"defs"!==s[s.length-r].nodeName&&o.appendChild(s[s.length-r]);t.appendChild(o)}var a=[];return o.getAttribute("class")&&(a=o.getAttribute("class").split(" ")),~a.indexOf("svg-pan-zoom_viewport")||(a.push("svg-pan-zoom_viewport"),o.setAttribute("class",a.join(" "))),o},setupSvgAttributes:function(t){if(t.setAttribute("xmlns",this.svgNS),t.setAttributeNS(this.xmlnsNS,"xmlns:xlink",this.xlinkNS),t.setAttributeNS(this.xmlnsNS,"xmlns:ev",this.evNS),null!==t.parentNode){var e=t.getAttribute("style")||"";-1===e.toLowerCase().indexOf("overflow")&&t.setAttribute("style","overflow: hidden; "+e)}},internetExplorerRedisplayInterval:300,refreshDefsGlobal:l.throttle(function(){for(var t=document.querySelectorAll("defs"),e=t.length,o=0;o<e;o++){var n=t[o];n.parentNode.insertBefore(n,n)}},this?this.internetExplorerRedisplayInterval:null),setCTM:function(t,e,o){var n=this,i="matrix("+e.a+","+e.b+","+e.c+","+e.d+","+e.e+","+e.f+")";t.setAttributeNS(null,"transform",i),"transform"in t.style?t.style.transform=i:"-ms-transform"in t.style?t.style["-ms-transform"]=i:"-webkit-transform"in t.style&&(t.style["-webkit-transform"]=i),"ie"===s&&o&&(o.parentNode.insertBefore(o,o),window.setTimeout(function(){n.refreshDefsGlobal()},n.internetExplorerRedisplayInterval))},getEventPoint:function(t,e){var o=e.createSVGPoint();return l.mouseAndTouchNormalize(t,e),o.x=t.clientX,o.y=t.clientY,o},getSvgCenterPoint:function(t,e,o){return this.createSVGPoint(t,e/2,o/2)},createSVGPoint:function(t,e,o){var n=t.createSVGPoint();return n.x=e,n.y=o,n}}},{"./utilities":7}],6:[function(t,e,o){function s(t,o){function e(t){var e={originalEvent:t=t||window.event,target:t.target||t.srcElement,type:"wheel",deltaMode:"MozMousePixelScroll"==t.type?0:1,deltaX:0,delatZ:0,preventDefault:function(){t.preventDefault?t.preventDefault():t.returnValue=!1}};return"mousewheel"==l?(e.deltaY=-.025*t.wheelDelta,t.wheelDeltaX&&(e.deltaX=-.025*t.wheelDeltaX)):e.deltaY=t.detail,o(e)}return h.push({element:t,fn:e}),e}function n(t,e,o,n){var i;i="wheel"===l?o:s(t,o),t[r](u+e,i,n?c:p)}function i(t,e,o,n){var i;i="wheel"===l?o:function(t){for(var e=0;e<h.length;e++)if(h[e].element===t)return h[e].fn;return function(){}}(t),t[a](u+e,i,n?c:p),function(t){for(var e=0;e<h.length;e++)if(h[e].element===t)return h.splice(e,1)}(t)}var r,a,l,u,h,c,p;e.exports=(h=[],p={passive:!(c={passive:!(u="")})},window.addEventListener?(r="addEventListener",a="removeEventListener"):(r="attachEvent",a="detachEvent",u="on"),l="onwheel"in document.createElement("div")?"wheel":void 0!==document.onmousewheel?"mousewheel":"DOMMouseScroll",{on:function(t,e,o){n(t,l,e,o),"DOMMouseScroll"==l&&n(t,"MozMousePixelScroll",e,o)},off:function(t,e,o){i(t,l,e,o),"DOMMouseScroll"==l&&i(t,"MozMousePixelScroll",e,o)}})},{}],7:[function(t,e,o){function n(e){return function(t){window.setTimeout(t,e)}}e.exports={extend:function(t,e){for(var o in t=t||{},e)this.isObject(e[o])?t[o]=this.extend(t[o],e[o]):t[o]=e[o];return t},isElement:function(t){return t instanceof HTMLElement||t instanceof SVGElement||t instanceof SVGSVGElement||t&&"object"==typeof t&&null!==t&&1===t.nodeType&&"string"==typeof t.nodeName},isObject:function(t){return"[object Object]"===Object.prototype.toString.call(t)},isNumber:function(t){return!isNaN(parseFloat(t))&&isFinite(t)},getSvg:function(t){var e,o;if(this.isElement(t))e=t;else{if(!("string"==typeof t||t instanceof String))throw new Error("Provided selector is not an HTML object nor String");if(!(e=document.querySelector(t)))throw new Error("Provided selector did not find any elements. Selector: "+t)}if("svg"===e.tagName.toLowerCase())o=e;else if("object"===e.tagName.toLowerCase())o=e.contentDocument.documentElement;else{if("embed"!==e.tagName.toLowerCase())throw"img"===e.tagName.toLowerCase()?new Error('Cannot script an SVG in an "img" element. Please use an "object" element or an in-line SVG.'):new Error("Cannot get SVG.");o=e.getSVGDocument().documentElement}return o},proxy:function(t,e){return function(){return t.apply(e,arguments)}},getType:function(t){return Object.prototype.toString.apply(t).replace(/^\[object\s/,"").replace(/\]$/,"")},mouseAndTouchNormalize:function(t,e){if(void 0===t.clientX||null===t.clientX)if(t.clientX=0,void(t.clientY=0)!==t.touches&&t.touches.length){if(void 0!==t.touches[0].clientX)t.clientX=t.touches[0].clientX,t.clientY=t.touches[0].clientY;else if(void 0!==t.touches[0].pageX){var o=e.getBoundingClientRect();t.clientX=t.touches[0].pageX-o.left,t.clientY=t.touches[0].pageY-o.top}}else void 0!==t.originalEvent&&void 0!==t.originalEvent.clientX&&(t.clientX=t.originalEvent.clientX,t.clientY=t.originalEvent.clientY)},isDblClick:function(t,e){if(2===t.detail)return!0;if(null==e)return!1;var o=t.timeStamp-e.timeStamp,n=Math.sqrt(Math.pow(t.clientX-e.clientX,2)+Math.pow(t.clientY-e.clientY,2));return o<250&&n<10},now:Date.now||function(){return(new Date).getTime()},throttle:function(o,n,i){var s,r,a,l=this,u=null,h=0;i=i||{};function c(){h=!1===i.leading?0:l.now(),u=null,a=o.apply(s,r),u||(s=r=null)}return function(){var t=l.now();h||!1!==i.leading||(h=t);var e=n-(t-h);return s=this,r=arguments,e<=0||n<e?(clearTimeout(u),u=null,h=t,a=o.apply(s,r),u||(s=r=null)):u||!1===i.trailing||(u=setTimeout(c,e)),a}},createRequestAnimationFrame:function(t){var e=null;return"auto"!==t&&t<60&&1<t&&(e=Math.floor(1e3/t)),null===e?window.requestAnimationFrame||n(33):n(e)}}},{}]},{},[3]);
diff --git a/libs/ktem/ktem/pages/chat/__init__.py b/libs/ktem/ktem/pages/chat/__init__.py
index 8b7e04c..3b81947 100644
--- a/libs/ktem/ktem/pages/chat/__init__.py
+++ b/libs/ktem/ktem/pages/chat/__init__.py
@@ -39,6 +39,29 @@ function() {
     for (var i = 0; i < links.length; i++) {
         links[i].onclick = openModal;
     }
+
+    var mindmap_el = document.getElementById('mindmap');
+    if (mindmap_el) {
+        var output = svgPanZoom(mindmap_el);
+    }
+
+    var link = document.getElementById("mindmap-toggle");
+    if (link) {
+        link.onclick = function(event) {
+            event.preventDefault(); // Prevent the default link behavior
+            var div = document.getElementById("mindmap-wrapper");
+            if (div) {
+                var currentHeight = div.style.height;
+                if (currentHeight === '400px') {
+                    var contentHeight = div.scrollHeight;
+                    div.style.height = contentHeight + 'px';
+                } else {
+                    div.style.height = '400px'
+                }
+            }
+        };
+    }
+
     return [links.length]
 }
 """
diff --git a/libs/ktem/ktem/reasoning/prompt_optimization/__init__.py b/libs/ktem/ktem/reasoning/prompt_optimization/__init__.py
index 29d8bf9..7e8d683 100644
--- a/libs/ktem/ktem/reasoning/prompt_optimization/__init__.py
+++ b/libs/ktem/ktem/reasoning/prompt_optimization/__init__.py
@@ -1,9 +1,11 @@
 from .decompose_question import DecomposeQuestionPipeline
 from .fewshot_rewrite_question import FewshotRewriteQuestionPipeline
+from .mindmap import CreateMindmapPipeline
 from .rewrite_question import RewriteQuestionPipeline
 
 __all__ = [
     "DecomposeQuestionPipeline",
     "FewshotRewriteQuestionPipeline",
     "RewriteQuestionPipeline",
+    "CreateMindmapPipeline",
 ]
diff --git a/libs/ktem/ktem/reasoning/prompt_optimization/mindmap.py b/libs/ktem/ktem/reasoning/prompt_optimization/mindmap.py
new file mode 100644
index 0000000..9e134c4
--- /dev/null
+++ b/libs/ktem/ktem/reasoning/prompt_optimization/mindmap.py
@@ -0,0 +1,52 @@
+import logging
+
+from ktem.llms.manager import llms
+
+from kotaemon.base import BaseComponent, Document, HumanMessage, Node, SystemMessage
+from kotaemon.llms import ChatLLM, PromptTemplate
+
+logger = logging.getLogger(__name__)
+
+
+class CreateMindmapPipeline(BaseComponent):
+    """Create a mindmap from the question and context"""
+
+    llm: ChatLLM = Node(default_callback=lambda _: llms.get_default())
+
+    SYSTEM_PROMPT = """
+From now on you will behave as "MapGPT" and, for every text the user will submit, you are going to create a PlantUML mind map file for the inputted text to best describe main ideas. Format it as a code and remember that the mind map should be in the same language as the inputted context. You don't have to provide a general example for the mind map format before the user inputs the text.
+    """  # noqa: E501
+    MINDMAP_PROMPT_TEMPLATE = """
+Question:
+{question}
+
+Context:
+{context}
+
+Generate a sample PlantUML mindmap for based on the provided question and context above. Only includes context relevant to the question to produce the mindmap.
+
+Use the template like this:
+
+@startmindmap
+* Title
+** Item A
+*** Item B
+**** Item C
+*** Item D
+@endmindmap
+    """  # noqa: E501
+    prompt_template: str = MINDMAP_PROMPT_TEMPLATE
+
+    def run(self, question: str, context: str) -> Document:  # type: ignore
+        prompt_template = PromptTemplate(self.prompt_template)
+        prompt = prompt_template.populate(
+            question=question,
+            context=context,
+        )
+
+        messages = [
+            SystemMessage(content=self.SYSTEM_PROMPT),
+            HumanMessage(content=prompt),
+        ]
+
+        return self.llm(messages)
diff --git a/libs/ktem/ktem/reasoning/simple.py b/libs/ktem/ktem/reasoning/simple.py
index e6d84ca..9702efd 100644
--- a/libs/ktem/ktem/reasoning/simple.py
+++ b/libs/ktem/ktem/reasoning/simple.py
@@ -10,9 +10,11 @@ import numpy as np
 import tiktoken
 from ktem.llms.manager import llms
 from ktem.reasoning.prompt_optimization import (
+    CreateMindmapPipeline,
     DecomposeQuestionPipeline,
     RewriteQuestionPipeline,
 )
+from ktem.utils.plantuml import PlantUML
 from ktem.utils.render import Render
 from theflow.settings import settings as flowsettings
 
@@ -227,6 +229,9 @@ class AnswerWithContextPipeline(BaseComponent):
     citation_pipeline: CitationPipeline = Node(
         default_callback=lambda _: CitationPipeline(llm=llms.get_default())
     )
+    create_mindmap_pipeline: CreateMindmapPipeline = Node(
+        default_callback=lambda _: CreateMindmapPipeline(llm=llms.get_default())
+    )
 
     qa_template: str = DEFAULT_QA_TEXT_PROMPT
     qa_table_template: str = DEFAULT_QA_TABLE_PROMPT
@@ -234,6 +239,8 @@ class AnswerWithContextPipeline(BaseComponent):
     qa_figure_template: str = DEFAULT_QA_FIGURE_PROMPT
 
     enable_citation: bool = False
+    enable_mindmap: bool = False
+
     system_prompt: str = ""
     lang: str = "English"  # support English and Japanese
     n_last_interactions: int = 5
@@ -325,17 +332,28 @@ class AnswerWithContextPipeline(BaseComponent):
 
         # retrieve the citation
         citation = None
+        mindmap = None
 
         def citation_call():
             nonlocal citation
             citation = self.citation_pipeline(context=evidence, question=question)
 
-        if evidence and self.enable_citation:
-            # execute function call in thread
-            citation_thread = threading.Thread(target=citation_call)
-            citation_thread.start()
-        else:
-            citation_thread = None
+        def mindmap_call():
+            nonlocal mindmap
+            mindmap = self.create_mindmap_pipeline(context=evidence, question=question)
+
+        citation_thread = None
+        mindmap_thread = None
+
+        # execute function call in thread
+        if evidence:
+            if self.enable_citation:
+                citation_thread = threading.Thread(target=citation_call)
+                citation_thread.start()
+
+            if self.enable_mindmap:
+                mindmap_thread = threading.Thread(target=mindmap_call)
+                mindmap_thread.start()
 
         output = ""
         logprobs = []
@@ -386,10 +404,12 @@ class AnswerWithContextPipeline(BaseComponent):
 
         if citation_thread:
             citation_thread.join(timeout=CITATION_TIMEOUT)
+        if mindmap_thread:
+            mindmap_thread.join(timeout=CITATION_TIMEOUT)
 
         answer = Document(
             text=output,
-            metadata={"citation": citation, "qa_score": qa_score},
+            metadata={"mindmap": mindmap, "citation": citation, "qa_score": qa_score},
         )
 
         return answer
@@ -597,9 +617,35 @@ class FullQAPipeline(BaseReasoning):
             )
         return with_citation, without_citation
 
-    def show_citations(self, answer, docs):
+    def prepare_mindmap(self, answer) -> Document | None:
+        mindmap = answer.metadata["mindmap"]
+        if mindmap:
+            mindmap_text = mindmap.text
+            uml_renderer = PlantUML()
+            mindmap_svg = uml_renderer.process(mindmap_text)
+
+            mindmap_content = Document(
+                channel="info",
+                content=Render.collapsible(
+                    header="""
+                    <i>Mindmap</i>
+                    <a href="#" id='mindmap-toggle'">
+                        [Expand]
+                    </a>""",
+                    content=mindmap_svg,
+                    open=True,
+                ),
+            )
+        else:
+            mindmap_content = None
+
+        return mindmap_content
+
+    def show_citations_and_addons(self, answer, docs):
         # show the evidence
         with_citation, without_citation = self.prepare_citations(answer, docs)
+        mindmap_output = self.prepare_mindmap(answer)
+
         if not with_citation and not without_citation:
             yield Document(channel="info", content="<h5><b>No evidence found.</b></h5>")
         else:
@@ -611,6 +657,10 @@ class FullQAPipeline(BaseReasoning):
             # clear previous info
             yield Document(channel="info", content=None)
 
+            # yield mindmap output
+            if mindmap_output:
+                yield mindmap_output
+
             # yield warning message
             if has_llm_score and max_llm_rerank_score < CONTEXT_RELEVANT_WARNING_SCORE:
                 yield Document(
@@ -683,7 +733,7 @@ class FullQAPipeline(BaseReasoning):
         if scoring_thread:
             scoring_thread.join()
 
-        yield from self.show_citations(answer, docs)
+        yield from self.show_citations_and_addons(answer, docs)
 
         return answer
 
@@ -716,6 +766,7 @@ class FullQAPipeline(BaseReasoning):
         answer_pipeline.citation_pipeline.llm = llm
         answer_pipeline.n_last_interactions = settings[f"{prefix}.n_last_interactions"]
         answer_pipeline.enable_citation = settings[f"{prefix}.highlight_citation"]
+        answer_pipeline.enable_mindmap = settings[f"{prefix}.create_mindmap"]
         answer_pipeline.system_prompt = settings[f"{prefix}.system_prompt"]
         answer_pipeline.qa_template = settings[f"{prefix}.qa_prompt"]
         answer_pipeline.lang = SUPPORTED_LANGUAGE_MAP.get(
@@ -764,6 +815,11 @@ class FullQAPipeline(BaseReasoning):
                 "value": True,
                 "component": "checkbox",
             },
+            "create_mindmap": {
+                "name": "Create Mindmap",
+                "value": False,
+                "component": "checkbox",
+            },
             "system_prompt": {
                 "name": "System Prompt",
                 "value": "This is a question answering system",
diff --git a/libs/ktem/ktem/utils/plantuml.py b/libs/ktem/ktem/utils/plantuml.py
new file mode 100644
index 0000000..be0cf47
--- /dev/null
+++ b/libs/ktem/ktem/utils/plantuml.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import base64
+import string
+from zlib import compress
+
+import httplib2
+import six  # type: ignore
+
+if six.PY2:
+    from string import maketrans
+else:
+    maketrans = bytes.maketrans
+
+
+plantuml_alphabet = (
+    string.digits + string.ascii_uppercase + string.ascii_lowercase + "-_"
+)
+base64_alphabet = string.ascii_uppercase + string.ascii_lowercase + string.digits + "+/"
+b64_to_plantuml = maketrans(
+    base64_alphabet.encode("utf-8"), plantuml_alphabet.encode("utf-8")
+)
+
+
+class PlantUMLError(Exception):
+    """
+    Error in processing.
+    """
+
+
+class PlantUMLConnectionError(PlantUMLError):
+    """
+    Error connecting or talking to PlantUML Server.
+    """
+
+
+class PlantUMLHTTPError(PlantUMLConnectionError):
+    """
+    Request to PlantUML server returned HTTP Error.
+    """
+
+    def __init__(self, response, content, *args, **kwdargs):
+        self.response = response
+        self.content = content
+        message = "%d: %s" % (self.response.status, self.response.reason)
+        if not getattr(self, "message", None):
+            self.message = message
+        super(PlantUMLHTTPError, self).__init__(message, *args, **kwdargs)
+
+
+def deflate_and_encode(plantuml_text):
+    """zlib compress the plantuml text and encode it for the plantuml server."""
+    zlibbed_str = compress(plantuml_text.encode("utf-8"))
+    compressed_string = zlibbed_str[2:-4]
+    return (
+        base64.b64encode(compressed_string).translate(b64_to_plantuml).decode("utf-8")
+    )
+
+
+class PlantUML(object):
+    """Connection to a PlantUML server with optional authentication.
+
+    All parameters are optional.
+
+    :param str url: URL to the PlantUML server image CGI. defaults to
+                    http://www.plantuml.com/plantuml/svg/
+    :param dict request_opts: Extra options to be passed off to the
+                    httplib2.Http().request() call.
+    """
+
+    def __init__(self, url="http://www.plantuml.com/plantuml/svg/", request_opts={}):
+        self.HttpLib2Error = httplib2.HttpLib2Error
+        self.http = httplib2.Http()
+
+        self.url = url
+        self.request_opts = request_opts
+
+    def get_url(self, plantuml_text):
+        """Return the server URL for the image.
+        You can use this URL in an IMG HTML tag.
+
+        :param str plantuml_text: The plantuml markup to render
+        :returns: the plantuml server image URL
+        """
+        return self.url + deflate_and_encode(plantuml_text)
+
+    def process(self, plantuml_text):
+        """Processes the plantuml text into the raw PNG image data.
+
+        :param str plantuml_text: The plantuml markup to render
+        :returns: the raw image data
+        """
+        url = self.get_url(plantuml_text)
+        try:
+            response, content = self.http.request(url, **self.request_opts)
+        except self.HttpLib2Error as e:
+            raise PlantUMLConnectionError(e)
+        if response.status != 200:
+            raise PlantUMLHTTPError(response, content)
+
+        svg_content = content.decode("utf-8")
+        svg_content = svg_content.replace("<svg ", "<svg id='mindmap' ")
+
+        # wrap in fixed height div
+        svg_content = (
+            "<div id='mindmap-wrapper' "
+            "style='height: 400px; overflow: hidden;'>"
+            f"{svg_content}</div>"
+        )
+
+        return svg_content