Convert MD to HTML, DOCX, Slack, Jira, or slides — clean up lists, tables, and frontmatter — validate links, split into chapters, diff two files. All in your browser, zero upload.
Every JAD Markdown tool processes your files entirely in your browser using JavaScript and WebAssembly. Markdown containing secrets, API keys, or PII never leaves your device — including our Secret Redactor tool which cleans output before you share it.
Export Markdown to HTML, PDF, Word, Reveal.js slides, Slack, and Jira — one-click format bridge.
Convert CommonMark and GFM Markdown to clean, semantic HTML instantly in your browser. No upload, no account — preserves code blocks, tables, and headings.
Render Markdown with GitHub's exact Primer CSS — same fonts, table styles, and code block theming as github.com. Browser-based, no upload.
Render Markdown as a serif, LaTeX-inspired academic PDF — ideal for whitepapers, research notes, and technical reports. Browser print engine, no upload.
Render Markdown as a clean sans-serif business PDF — ideal for reports, proposals, and documentation. Browser print engine, zero upload.
Convert Markdown to a properly formatted Word .docx file — preserving headings, code blocks, tables, and lists. Browser-based, no upload.
Convert standard Markdown to Slack's mrkdwn format — bold, italic, code, links, and lists all correctly mapped. Browser-based, zero upload.
Convert Markdown to Jira's wiki markup format — headings, bold, tables, code blocks, and links all correctly mapped. Browser-based, no upload.
Turn a single Markdown file into a browser-based Reveal.js presentation. Horizontal slides on H1, vertical slides on H2. Download the self-contained HTML. Free.
Fix AI-generated Markdown artefacts: bullet chaos, redundant bold/italic, broken tables, missing code fences, and emoji.
Normalize AI-generated bullet chaos — •, ▸, ∙, 1), a) — into standard Markdown lists. Instant browser processing, no upload.
Clean up ***text***, **_text_**, and other redundant or malformed emphasis from AI-generated Markdown. Instant, browser-based.
Fix broken pipe tables from copy-paste, AI output, or manual editing. Realigns columns, repairs missing separators, and normalises cell padding. Free.
Standardise inconsistent math delimiters — \(, \[, $$, $ — into a single consistent format for web display with KaTeX or MathJax. Free, browser-based.
Automatically detect the language of untagged fenced code blocks and insert the language identifier. Supports TypeScript, Python, SQL, Bash, HTML, JSON, and more.
UI-driven YAML frontmatter generator for static site generators — Gatsby, Next.js, Hugo, Astro. Fill in fields and prepend to your Markdown. Free, browser-based.
Remove or replace emoji characters from Markdown for professional documentation, API reference, or print output. Instant, browser-based.
Auto-TOC, heading shifts, footnote collection, link validation, image path rewrites, and reference-style links.
Automatically generate a linked Table of Contents from Markdown headings with GitHub-compatible anchor links. Free, browser-based.
Shift all headings in a Markdown document up or down by one or more levels — e.g. H2 → H3 for embedding a document as a section. Free, instant.
Convert all inline [text](url) links to numbered reference-style footnotes at the bottom of the document. Cleans prose and improves readability. Free.
Extract all URLs from a Markdown file and check for format errors and DNS failures. Reports relative paths, malformed URLs, and unreachable domains. Free.
Update all local image paths to absolute CDN URLs or a new base path in bulk. Essential for CMS migrations and static site deployments. Free, browser-based.
Convert all inline [text](url) links to reference-style [text][1] notation with a clean reference block at the bottom. Improves prose readability. Free.
Minify, prettify, diff, split, merge, redact secrets, convert HTML→MD, JSON/CSV→tables, and lint.
Strip trailing whitespace, collapse excess blank lines, remove HTML comments, and normalise heading spacing for minimal Markdown storage. Free, instant.
Force-wrap prose at 80 or 120 characters, normalise list indentation, fix heading spacing, and standardise blank lines. Browser-based Markdown formatter. Free.
Convert HTML from web pages, CMS exports, or email to clean Markdown. Powered by Turndown.js with GFM table support. Browser-based, no upload.
Turn a JSON array of objects into a clean Markdown pipe table instantly. Keys become headers, values become rows. Free, browser-based.
Instantly convert CSV data to a clean Markdown pipe table. Useful for adding data tables to README files and documentation. Free, browser-based.
Highlight structural changes between two versions of a Markdown document. Unified diff output showing added, removed, and changed lines. Free, browser-based.
Divide a large Markdown document into separate chapter files at H1 or H2 boundaries. Download all chapters as a ZIP. Pro feature.
Join 2–50 Markdown files into a single unified document with an auto-generated TOC. Pro feature. Preserves headings and adds H1 separators from filenames.
Automatically detect and redact API keys, tokens, and passwords found in Markdown code blocks. Safe for sharing docs publicly. Free, browser-based.
Remove GFM-specific extensions and convert to strict CommonMark: tables to HTML, strikethrough to <del>, task lists normalized. Free.
Check Markdown against 15 markdownlint-compatible rules and get inline fix suggestions. Catches heading hierarchy, trailing whitespace, bare URLs, and more. Free.
Step-by-step guides for every markdown workflow — developer docs, CMS migration, blog publishing, academic writing, and DevRel. Each guide embeds the live tool.
Browse all Markdown Guides