Local Markdown Editor with Real-time Preview and Easy PDF Export - DEV Community

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Copy link Copy link Copied to Clipboard Share to X Share to LinkedIn Share to Facebook Share to Mastodon Report Abuse try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 1564961) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } SteamedBread2333 Posted on Jan 13 Local Markdown Editor with Real-time Preview and Easy PDF Export #markdown #mermaid #echarts #katex MarkX is a local Markdown editor with real-time preview. Edit locally in your browser and export to PDF with one click. Fully responsive design works perfectly on desktop and mobile devices. Key Features Local Editing & Real-time Preview Edit Markdown files locally in your browser Split-pane view: editor on the left, live preview on the right Auto-save drafts every 30 seconds All data stays local—complete privacy Easy PDF Export Export your documents to PDF with three modes: Default - Quick export with natural pagination Full Page - Single continuous image for presentations Smart Pagination ⭐ - Intelligent page breaks that avoid cutting diagrams, code blocks, and formulas All PDF exports preserve Mermaid diagrams, ECharts charts, KaTeX formulas, and code syntax highlighting perfectly. Rich Content Support Mermaid Diagrams - Flowcharts, sequence diagrams, Gantt charts, class diagrams ECharts Charts - Bar, line, pie, scatter charts with full API support KaTeX Math - Inline ($...$) and block ($$...$$) formulas GitHub Flavored Markdown - Complete GFM support Code Highlighting - Syntax highlighting for 20+ languages Export to PDF Exporting to PDF is incredibly simple: Write your Markdown content with diagrams, charts, or formulas Click the "More" menu (three dots) in the toolbar Select your preferred PDF export mode Download your professional PDF document The Smart Pagination mode ensures diagrams, code blocks, and math formulas are never cut off across pages—perfect for technical documentation. (Unless the block itself exceeds one page in height.) Get Started Try it now: Live Demo GitHub Repository: https://github.com/steamedbread2333/MarkX Star the repo if you find it useful! Open source, MIT licensed. Contributions welcome! Top comments (0) Subscribe Personal Trusted User Create template Templates let you quickly answer FAQs or store snippets for re-use. Submit Preview Dismiss Code of Conduct • Report abuse Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well Confirm For further actions, you may consider blocking this person and/or reporting abuse SteamedBread2333 Follow Joined Jun 3, 2024 Trending on DEV Community Hot How to Crack Any Software Developer Interview in 2026 (Updated for AI & Modern Hiring) #softwareengineering #programming #career #interview Prompt Engineering Won’t Fix Your Architecture #discuss #career #ai #programming Stop Overengineering: How to Write Clean Code That Actually Ships 🚀 #discuss #javascript #programming #webdev function activateRunkitTags() { if (!areAnyRunkitTagsPresent()) return var checkRunkit = setInterval(function() { try { dynamicallyLoadRunkitLibrary() if (typeof(RunKit) === 'undefined') { return } replaceTagContentsWithRunkitWidget() clearInterval(checkRunkit); } catch(e) { console.error(e); clearInterval(checkRunkit); } }, 200); } function isRunkitTagAlreadyActive(runkitTag) { return runkitTag.querySelector("iframe") !== null; }; function areAnyRunkitTagsPresent() { var presentRunkitTags = document.getElementsByClassName("runkit-element"); return presentRunkitTags.length > 0 } function replaceTagContentsWithRunkitWidget() { var targets = document.getElementsByClassName("runkit-element"); for (var i = 0; i < targets.length; i++) { if (isRunkitTagAlreadyActive(targets[i])) { continue; } var wrapperContent = targets[i].textContent; if (/^(<iframe src)/.test(wrapperContent) === false) { if (targets[i].children.length > 0) { var preamble = targets[i].children[0].textContent; var content = targets[i].children[1].textContent; targets[i].innerHTML = ""; var notebook = RunKit.createNotebook({ element: targets[i], source: content, preamble: preamble }); } } } }; function dynamicallyLoadRunkitLibrary() { if (typeof(dynamicallyLoadScript) === "undefined") return dynamicallyLoadScript("//embed.runkit.com") } activateRunkitTags();