HTML Validator & Formatter
Beautify, validate and minify HTML. Free, no signup
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Paste or upload messy HTML and get clean, well-indented code. It validates against HTML5, HTML4 or XHTML 1.0, and also runs accessibility and SEO checks, so you catch problems like missing alt text early. You can format and sort attributes, choose spaces or tabs, auto-close tags, remove comments, fix character encoding, or minify for production. Results come in clear tabs: validation, formatted code and stats. Copy the HTML, or download the code, a minified version or a report. No signup.
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PH · launched Nov 2, 2026 · 2 upvotes (top 17%)
- Horizontal
- Dev tools
- Developer
- Not AI
- Productivity
- SEO
- Developer Tools
Similar launches
See all 152 similar launches →Could you build this?
Yes HTML formatting, minification, and validation are mature open-source problems. Libraries like js-beautify and the W3C validator cover the core, and accessibility checks can use axe-core.
Competitors
Other products that read as similar to this one : 152 launches clear the similarity bar, closest 8 shown.
Attention rank: #18 of 153 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 358 days after the earliest competitor.
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- JSON Formatter by EchtCosplay · ph · 2026-10-27 · 1 upvotes · similarity 0.50
- Text Compare · ph · 2026-09-11 · 2 upvotes · similarity 0.48
- SWD Develop CSS Minifier · ph · 2026-10-05 · 2 upvotes · similarity 0.45
- JSON Object Validator · ph · 2026-09-24 · 2 upvotes · similarity 0.45
- CodeSplitterDex · ph · 2026-10-13 · 1 upvotes · similarity 0.45
- JSONMini · ph · 2026-10-08 · 1 upvotes · similarity 0.45