About

Displays charts on parkrun pages: finishers per minute on results pages and event history on event history pages

Version 1.1.19 Updated

Screenshot

parkrun Charts Screenshot

Install

Recommended: userscript. Bookmarklet works where a userscript manager isn’t available.

Userscript (recommended)

Install parkrun Charts

First time? Userscript basics and installation steps

What is a userscript?

A userscript is a small piece of JavaScript that runs in your browser and enhances specific websites. These scripts work with parkrun event pages, parkrunner profile pages, and results pages, and can be used with any userscript manager including Userscripts, Tampermonkey, Violentmonkey, or any compatible browser extension.

Installation steps

  1. Install a userscript manager for your browser:
  2. Click the Install button above for this script.
  3. Click “Install” when prompted by your userscript manager.

Bookmarklet

A bookmarklet is a bookmark whose URL is JavaScript. Use it on browsers that support bookmarks but not userscript managers.

Drag this link to your bookmarks bar:

parkrun Charts bookmarklet

Mobile bookmarklet setup and full code

Mobile bookmarklet

On mobile browsers that let you edit bookmark URLs:

  1. Copy the JavaScript code below to your clipboard.
  2. Create a new bookmark for any page.
  3. Edit the bookmark and replace its URL with the code you copied.
  4. Navigate to the relevant parkrun page.
  5. Select the bookmark to run the script.
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for(;!(s=(r=a.call(n)).done)&&(i.push(r.value),i.length!==t);s=!0);}catch(e){c=!0,o=e}finally{try{if(!s&&null!=n.return&&(l=n.return(),Object(l)!==l))return}finally{if(c)throw o}}return i}}function _arrayWithHoles(e){if(Array.isArray(e))return e}(()=>{var b={backgroundColor:"#2b223d",barColor:"#FFA300",lineColor:"#53BA9D",textColor:"#e0e0e0",subtleTextColor:"#cccccc",gridColor:"rgba(200, 200, 200, 0.2)"},d=!1;function v(e,t,n){var n=2<arguments.length&&void 0!==n?n:800,r=document.createElement("div"),n=(r.className="parkrun-chart-container "+t+"-container",r.style.width="100%",r.style.maxWidth=n+"px",r.style.margin="20px auto",r.style.padding="15px",r.style.backgroundColor=b.backgroundColor,r.style.borderRadius="8px",r.style.boxShadow="0 2px 4px rgba(0,0,0,0.1)",document.createElement("h3")),e=(n.textContent=e,n.style.textAlign="center",n.style.marginBottom="15px",n.style.color=b.barColor,r.appendChild(n),document.createElement("canvas"));return e.id=t,r.appendChild(e),{container:r,canvas:e}}function f(e,t){e=document.querySelector(e);e&&e.parentNode&&(e.nextSibling?e.parentNode.insertBefore(t,e.nextSibling):e.parentNode.appendChild(t))}function x(a){var e=document.createElement("div"),l=(e.style.display="flex",e.style.justifyContent="center",e.style.marginTop="10px",e.style.marginBottom="10px",document.createElement("button"));l.textContent="💾 Save as Image",l.style.padding="6px 12px",l.style.backgroundColor=b.barColor,l.style.color="#2b223d",l.style.border="none",l.style.borderRadius="4px",l.style.cursor="pointer",l.style.fontWeight="bold",l.style.display="inline-block",l.style.margin="0 5px",l.title="Download chart as PNG image",l.addEventListener("mouseover",function(){this.style.backgroundColor="#e59200"}),l.addEventListener("mouseout",function(){this.style.backgroundColor=b.barColor}),l.addEventListener("click",function(){l.style.display="none",html2canvas(a,{backgroundColor:b.backgroundColor,scale:2,logging:!1,allowTaint:!0,useCORS:!0}).then(function(e){l.style.display="block";var t=document.createElement("a"),n=(new Date).toISOString().split("T")[0],r=window.location.pathname.split("/")[1],o=a.classList.contains("eventHistoryChart-container")?"event-history":"finishers";t.download="".concat(r,"-").concat(o,"-").concat(n,".png"),t.href=e.toDataURL("image/png"),t.click()})}),e.appendChild(l),a.appendChild(e)}function C(e){for(var t=e.getContext("2d"),n="parkrun-charts",r="unknown",o="",a=("undefined"!=typeof GM_info&&GM_info&&GM_info.script&&(n=GM_info.script.name||n,r=GM_info.script.version||r,o=GM_info.script.homepage||""),["Generated by ".concat(n," v").concat(r),o]),l=(t.save(),t.font=d?"bold 16px Arial":"10px Arial",t.fillStyle=d?"rgba(255, 0, 0, 0.5)":"rgba(200, 200, 200, 0.1)",t.textAlign="right",t.textBaseline="bottom",d?20:14),i=e.width-10,s=e.height-10,c=a.length-1;0<=c;c--){var u=a[c];u&&(t.fillText(u,i,s),s-=l)}t.restore()}function e(){var e,t,n=[[null==(n=document.querySelector("h1"))||null==(n=n.textContent)?void 0:n.trim(),null==(n=document.querySelector("h3"))||null==(n=n.textContent)?void 0:n.trim()].filter(Boolean).join(" | "),"Finishers per Minute"].filter(Boolean).join(": "),r=(e=>{for(var t=e.timeData,n=e.maxMinute,r=[],o=[],a=e.minMinute;a<=n;a++)r.push(a),o.push(t[a]||0);return{labels:r.map(function(e){var t=Math.floor(e/60),e=e%60;return"".concat(t,":").concat(e.toString().padStart(2,"0"))}),data:o}})((()=>{var r={},e=document.querySelectorAll("tr.Results-table-row"),o=1/0,a=0;e.forEach(function(e){e=e.querySelector("td.Results-table-td--time");if(e){var e=e.textContent.trim(),t=e.match(/(\d+):(\d+):(\d+)/);if(t)var n=60*parseInt(t[1])+parseInt(t[2]);else{t=e.match(/(\d+):(\d+)/);if(!t)return;n=parseInt(t[1])}o=Math.min(o,n),a=Math.max(a,n),r[n]?r[n]++:r[n]=1}});for(var t=o;t<=a;t++)r[t]||(r[t]=0);return{timeData:r,minMinute:o,maxMinute:a}})());0===r.labels.length?console.log("No finish time data found"):document.getElementById("finishersChart")?console.log("Finishers chart already exists, skipping render"):(e=(n=v(n,"finishersChart")).container,t=n.canvas,f("h3",e),x(e),n=t.getContext("2d"),new Chart(n,{type:"bar",data:{labels:r.labels,datasets:[{label:"Number of Finishers",data:r.data,backgroundColor:b.barColor,borderColor:b.barColor,borderWidth:1}]},options:{animation:!1,responsive:!0,plugins:{legend:{labels:{color:b.textColor}},title:{display:!1,color:b.textColor},tooltip:{callbacks:{title:function(e){var t,n,e=e[0].label;return e.includes(":")?(n=(t=_slicedToArray(e.split(":"),2))[0],t=t[1],"".concat(n," hour").concat("1"===n?"":"s"," ").concat(t," minute").concat("01"===t?"":"s")):(n=e.replace("'",""),"".concat(n," minute").concat("1"===n?"":"s"))},label:function(e){return"".concat(e.raw," finisher").concat(1===e.raw?"":"s")}}}},scales:{x:{title:{display:!0,text:"Finish Time",color:b.textColor},ticks:{color:b.subtleTextColor},grid:{color:b.gridColor}},y:{beginAtZero:!0,title:{display:!0,text:"Number of Finishers",color:b.textColor},ticks:{precision:0,color:b.subtleTextColor},grid:{color:b.gridColor}}},onHover:function(){setTimeout(function(){return C(t)},0)},onResize:function(){setTimeout(function(){return C(t)},0)},customPlugin:{id:"watermarkPlugin",afterDraw:function(){setTimeout(function(){return C(t)},0)}}}}),setTimeout(function(){return C(t)},0))}function i(e,t){return t<=e}function A(e,t){for(var n=[],r=0;r<e.length;r++)if(r<t-1)n.push(null);else{for(var o=0,a=0;a<t;a++)o+=e[r-a];n.push(parseFloat((o/t).toFixed(1)))}return n}function k(e,t,n){for(var r=1/0,o=-1/0,a=-1,l=-1,i=0;i<e.length;i++)e[i]<r&&(r=e[i],a=i),e[i]===r&&(a=i),o<e[i]&&(o=e[i],l=i),e[i]===o&&(l=i);return{min:{value:r,eventNumber:t[a],date:n[a],index:a},max:{value:o,eventNumber:t[l],date:n[l],index:l}}}function w(e,t){return 0!==e&&0!==t&&Math.floor(Math.log10(e))===Math.floor(Math.log10(t))}function E(e){var t=e.historyData,n=e.finishersAxisId,r=e.volunteersAxisId,o=e.finishersRollingAvg,a=e.volunteersRollingAvg,e=e.rollingAvgWindowSize,l=[{label:"Finishers",data:t.finishers,backgroundColor:b.barColor,borderColor:b.barColor,borderWidth:1,yAxisID:n,order:1},{label:"Volunteers",data:t.volunteers,type:"line",borderColor:b.lineColor,backgroundColor:"rgba(83, 186, 157, 0.2)",borderWidth:1,pointBackgroundColor:b.lineColor,pointRadius:2,fill:!1,tension:.2,yAxisID:r,order:2}];return i(t.eventNumbers.length,e)&&l.push({label:"".concat(e,"-Event Avg (Finishers)"),data:o,type:"line",borderColor:b.barColor,backgroundColor:"transparent",borderWidth:2,borderDash:[5,5],pointRadius:0,fill:!1,yAxisID:n,order:0},{label:"".concat(e,"-Event Avg (Volunteers)"),data:a,type:"line",borderColor:b.lineColor,backgroundColor:"transparent",borderWidth:2,borderDash:[5,5],pointRadius:0,fill:!1,yAxisID:r,order:3}),l}function S(e){var t=e.latestDate,n=e.latestEventNumber,r=e.latestFinishers,o=e.latestVolunteers,a=e.latestFinishersAvg,l=e.latestVolunteersAvg,e=e.rollingAvgWindowSize,a=null!=a?" (".concat(e,"-Event avg: ").concat(a.toFixed(1),")"):"",e=null!=l?" (".concat(e,"-Event avg: ").concat(l.toFixed(1),")"):"";return"\n      <strong>Latest event:</strong> ".concat(t," (Event #").concat(n,') |\n      <span style="color: ').concat(b.barColor,'">Finishers: ').concat(r).concat(a,'</span> |\n      <span style="color: ').concat(b.lineColor,'">Volunteers: ').concat(o).concat(e,"</span>\n    ")}function t(){var o,n,r,a,l,e,t,i,s,c,u,d,p,m,g,h,y;document.getElementById("eventHistoryChart")?console.log("Event history chart already exists, skipping render"):(t=null!=(t=null==(t=document.querySelector("h1"))?void 0:t.textContent.trim())?t:"Event History",n=[],r=[],a=[],l=[],e=document.querySelectorAll("tr.Results-table-row"),Array.from(e).reverse().forEach(function(e){var t=e.getAttribute("data-parkrun"),t=(t&&n.push(t),e.getAttribute("data-date")),t=(t&&(t=new Date(t).toLocaleDateString(void 0,{year:"numeric",month:"short",day:"numeric"}),r.push(t)),e.getAttribute("data-finishers")),t=(t&&a.push(parseInt(t,10)),e.getAttribute("data-volunteers"));t&&l.push(parseInt(t,10))}),0===(o={title:t,eventNumbers:n,dates:r,finishers:a,volunteers:l}).eventNumbers.length?console.log("No event history data found"):(e=A(o.finishers,12),t=A(o.volunteers,12),h=k(o.finishers,o.eventNumbers,o.dates),y=k(o.volunteers,o.eventNumbers,o.dates),i={"y-parkrunners":{type:"linear",position:"left",beginAtZero:!0,title:{display:!0,text:"parkrunners",color:b.textColor},ticks:{precision:0,color:b.subtleTextColor},grid:{color:b.gridColor}},"y-finishers":{type:"linear",position:"left",beginAtZero:!0,title:{display:!0,text:"Number of Finishers",color:b.barColor},ticks:{precision:0,color:b.barColor},grid:{color:b.gridColor}},"y-volunteers":{type:"linear",position:"right",beginAtZero:!0,title:{display:!0,text:"Number of Volunteers",color:b.lineColor},ticks:{precision:0,color:b.lineColor},grid:{display:!1}}},s=(c=w(h.max.value,y.max.value))?"y-parkrunners":"y-finishers",c=c?"y-parkrunners":"y-volunteers",u=(p=v("".concat(o.title,": Finishers & Volunteers"),"eventHistoryChart",1e3)).container,(d=p.canvas).height=400,d.style.height="400px",d.style.maxHeight="400px",f("h1",u),p=d.getContext("2d"),m=o.dates.length-1,(g=document.createElement("div")).className="chart-latest-summary",g.style.marginTop="10px",g.style.color=b.textColor,g.style.fontSize="14px",g.style.textAlign="center",g.style.wordBreak="break-word",g.innerHTML=S({latestDate:o.dates[m],latestEventNumber:o.eventNumbers[m],latestFinishers:o.finishers[m],latestVolunteers:o.volunteers[m],latestFinishersAvg:e[m],latestVolunteersAvg:t[m],rollingAvgWindowSize:12}),u.appendChild(g),(m=document.createElement("div")).className="chart-stats-footer",m.style.marginTop="10px",m.style.padding="10px",m.style.backgroundColor=b.backgroundColor,m.style.color=b.textColor,m.style.borderRadius="4px",m.style.fontSize="14px",m.style.textAlign="center",m.innerHTML='\n      <span style="color: '.concat(b.barColor,'">Finishers:</span> Min: ').concat(h.min.value," (").concat(h.min.date,", Event #").concat(h.min.eventNumber,") |\n      Max: ").concat(h.max.value," (").concat(h.max.date,", Event #").concat(h.max.eventNumber,')<br>\n      <span style="color: ').concat(b.lineColor,'">Volunteers:</span> Min: ').concat(y.min.value," (").concat(y.min.date,", Event #").concat(y.min.eventNumber,") |\n      Max: ").concat(y.max.value," (").concat(y.max.date,", Event #").concat(y.max.eventNumber,")\n    "),u.appendChild(m),g={title:{display:!0,text:"Date",color:b.textColor},ticks:{color:b.subtleTextColor,maxRotation:45,minRotation:45,callback:function(e,t){var n=o.dates.length,r=1;return 100<n?r=10:50<n?r=5:20<n&&(r=2),0===t||t===o.dates.length-1||t%r==0?o.dates[t]:""}},grid:{color:b.gridColor}},h=E({historyData:o,finishersAxisId:s,volunteersAxisId:c,finishersRollingAvg:e,volunteersRollingAvg:t,rollingAvgWindowSize:12}),(y={x:g})[s]=i[s],c!=s&&(y[c]=i[c]),new Chart(p,{type:"bar",data:{labels:o.dates,datasets:h},options:{animation:!1,responsive:!0,maintainAspectRatio:!0,aspectRatio:2.5,plugins:{legend:{labels:{color:b.textColor,usePointStyle:!0}},tooltip:{mode:"index",callbacks:{title:function(e){var e=e[0].dataIndex,t=o.eventNumbers[e],e=o.dates[e];return"".concat(e," (Event #").concat(t,")")},label:function(e){var t=e.dataset.label||"";return"Finishers"===t?"Finishers: ".concat(e.raw):"Volunteers"===t?"Volunteers: ".concat(e.raw):t.includes("Avg")?"".concat(t,": ").concat(e.raw):e.formattedValue}}}},scales:y,onHover:function(){setTimeout(function(){return C(d)},0)},onResize:function(){setTimeout(function(){return C(d)},0)},customPlugin:{id:"watermarkPlugin",afterDraw:function(){setTimeout(function(){return C(d)},0)}}}}),setTimeout(function(){return C(d)},0),x(u)))}"undefined"!=typeof module&&void 0!==module.exports?(module.exports.sameOrderOfMagnitude=w,module.exports.eventHistoryHasEnoughEventsForRollingAverage=i,module.exports.isRecordFinisherOrVolunteerCount=function(e,t){return e===t.min.value||e===t.max.value},module.exports.buildEventHistoryDatasets=E,module.exports.formatLatestEventSummaryHtml=S):"undefined"==typeof Chart?console.error("Chart.js not loaded"):document.querySelector(".Results-table")?(window.location.href.includes("/eventhistory/")?t:e)():console.log("Results table not found")})();

Support

Issues and support on GitHub