Where does processing happen?
You submit input from this page. Utiline runs the tool on secure servers—heavy parsing and crypto never ship to your browser.
Secure · HTML sanitizer
Sanitize untrusted HTML with an allowlist cleaner
Clean user-supplied HTML for display without installing a sanitizer on your own site.
- Server-side allowlist
- Input and output size report
- Free tier character limits
Safe markup
Secure processing, simple download.
You upload from this page (or paste input for instant tools). Utiline processes your request in the cloud and gives you a link to download the result—nothing heavy runs in your browser.
When to use HTML sanitizer
Built for everyday file work.
- Clean CMS snippets
- Remove script tags from imports
- Preview cleaned HTML before publish
Paste raw HTML. Tags removed by the allowlist may change how content looks—always review output.
Instant result
Run HTML sanitizer
Paste or type your input below and run the tool. Processing happens on Utiline's servers—your browser only sends the request and shows the answer.
Soft input cap: 32 KBSession: anonymousRuns instantly
FAQ
HTML sanitizer questions
Does this remove all XSS?
Sanitization uses a strict allowlist. Review output before production and combine with Content-Security-Policy.
Is my pasted input sent to analytics?
No. Optional analytics records only which tool you used and run status. What you paste never goes to analytics—only the result shown on this page.
Can I automate this in production?
Yes. See the developer quickstart for API keys, usage metering, and higher limits in production.