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htaccess Validator

Validate .htaccess files against 30+ known Apache directives. Checks RewriteEngine, RewriteRule, ErrorDocument, Redirect, Header, Options, and block directives. Flags unknown directives. Code never leaves your device — formatting and validation run locally in your browser.

100% Local Browser Native

How to Use the htaccess Validator

1. Paste the .htaccess content

Directives exactly as on the server — RewriteRules, auth blocks, headers.

2. Read directive errors

Unknown directives and bad flag syntax flagged per line.

3. Test on staging

Upload to a staging host and request the affected URLs — syntax-valid still needs behavior proof.

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Frequently Asked Questions

What rules get checked?

Rewrite, redirect, auth, and caching directives against Apache best practices.

Will it fix my file?

No — it reports problems with line numbers; edits stay yours to make.

Nginx too?

No — htaccess is Apache-only; Nginx uses server blocks instead.

Is my work uploaded anywhere when using htaccess Validator?

No — validation runs locally in your browser, free with no signup.

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Last updated October 2026