Markdown to HTML: Paste, Preview, Export

Markdown preview & viewer. Paste Markdown, see it rendered safely Paste any Markdown (including the contents of a .md file you've opened elsewhere) and see a live, side-by-side Markdown preview: headings, bold/italic, lists, links, code blocks and inline code, and blockquotes. Use it as a fast Markdown viewer for a README, a note, or a draft, then copy the result as clean HTML ready to paste into an email, wiki, or document. No account, no upload, no CDN. AT A GLANCE ✔ Live side-by-side Markdown preview, updating as you type ✔ Headings, bold/italic, ordered and unordered lists (incl. nesting), links, fenced and inline code, and blockquotes ✔ Copy as sanitized HTML, or copy as one complete styled HTML document ✔ Two independent XSS-safety layers on every render: raw HTML never executes ✔ Paste-only (no file access, no active-tab access, storage-only permission) ✔ Light / dark / system theme PASTE-ONLY BY DESIGN: WHAT THIS TOOL DOES NOT DO This extension does not open, browse, or read a `.md` file from your disk. It never requests file-system or host access at all. To preview a Markdown file, copy its text and paste it in. That constraint is what keeps the permission footprint at `storage` only, with no `activeTab`, no `scripting`, and no way for the extension to ever see anything on a web page. SAFE BY DESIGN: THE PART OTHER MARKDOWN TOOLS GET WRONG Markdown can embed raw HTML, and a pasted document could contain a hidden script, an image tag with an error handler, or a link using a dangerous `javascript:` URL. This extension renders your Markdown through two independent safety layers before anything is ever shown or copied: Markdown is parsed with raw HTML disabled (embedded HTML is shown as harmless text, never executed), and the resulting HTML is ALSO passed through a well-known, industry-standard sanitizer (DOMPurify) against a strict allowlist. Both the on-screen preview and anything you copy or export go through the exact same safety pipeline. Remote images referenced in pasted Markdown are never silently loaded either. Only self-contained embedded images are shown, so nothing you paste can quietly "phone home" as you preview it. WHAT IT DOES (FREE) - LIVE SIDE-BY-SIDE MARKDOWN PREVIEW: paste on the left, see the rendered result on the right, updating as you type. It works as a fast Markdown viewer with no app or account to set up. - CORE MARKDOWN: headings, bold/italic, ordered and unordered lists (including nesting), links, fenced and inline code, and blockquotes. Fenced and inline code render as a clean, distinct monospace block. Honestly: there is no per-language syntax color-highlighting. - COPY AS HTML: one click copies the sanitized, rendered HTML to your clipboard. - COPY AS STYLED HTML: one click copies a complete, standalone HTML document (styled to match this preview) to your clipboard, so saving it as a .html file and opening it in a browser looks right, not like a bare fragment. - LIGHT/DARK/SYSTEM THEME. HOW TO USE 1. Paste Markdown into the left-hand pane. 2. Read the sanitized, live preview in the right-hand pane; it updates as you type. 3. Copy the result as sanitized HTML, or copy it as one complete styled HTML document; premium adds a themed HTML file export. PERFECT FOR Reviewing a README before you commit it, drafting a PR description, or previewing a note before you paste it into a wiki page or an email, anywhere you want to see rendered Markdown without opening a full editor or app. PREMIUM ($5 one-time) - GFM extras: tables, task-lists, and footnotes render properly in the preview (the free tier still handles this Markdown safely, it just shows it as plain text instead of a formatted table/checkbox/footnote). - Themed HTML export: download a complete, standalone HTML file styled Plain, GitHub-style, Sepia, Dark, or Match Preview (the exact look of the in-extension preview). - Saved documents: name and save Markdown documents locally, and reload them instantly. No subscription, no account required. Pay once, keep the features.