Text & Code Diff Checker
Compare text, code, or JSON and highlight added and removed content. Export a readable difference report.
Convert Markdown to HTML, HTML to Markdown, or strip messy HTML to clean semantic markup.
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Output will appear here…Convert between Markdown and HTML instantly — or clean messy HTML by stripping scripts, styles, and non-semantic attributes. All conversions run locally in your browser with no data sent to any server.
Converts headings, bold, italic, links, images, code blocks, tables, blockquotes, and lists to semantic HTML.
Reverses HTML back to readable Markdown, stripping tag attributes and converting inline styles.
Removes <script>, <style>, event handlers, and non-semantic attributes, keeping only safe structural tags.
Compare text, code, or JSON and highlight added and removed content. Export a readable difference report.
Convert between CSV and JSON with type inference, custom delimiters, and flatten/unflatten support.
Test regex patterns with live highlighting and 12 SEO presets for slugs, UTM params, meta tags, and more.
Need help with inputs or downloads? Read the help page.