Htaccess to Nginx Converter

The Htaccess to Nginx Converter turns a focused set of Apache .htaccess lines into Nginx-style configuration snippets directly in your browser. Paste Apache rules into the Apache .htaccess editor, and the readonly Nginx Configuration editor updates automatically with generated output you can copy for review.

This tool is designed for quick migration notes, redirect planning, and side-by-side comparison while moving common Apache rules toward an Nginx configuration. It is not a full server migration engine. Apache and Nginx process requests through different configuration models, so the generated snippet should be treated as a draft that still needs a human review, staging deployment, and real request testing before it belongs in a live web server.

What the converter actually does

The converter runs as a browser-side Alpine component with Ace code editors. The left editor uses Apache configuration highlighting and accepts editable input. The right editor uses Nginx highlighting, is readonly, and receives the generated output. Conversion happens when the input editor changes. If the tool is protected by reCAPTCHA on the site, the editors appear after the unlock step; the conversion logic itself still runs in the browser after the interface is available.

When input is present, the output starts with # Generated by CyberTools Htaccess to Nginx Converter. Blank lines are skipped. Comment lines are preserved as comments. Supported Apache directives are converted line by line. Lines outside the supported patterns are not silently removed; they are kept visible as comments beginning with # Unsupported rule:, which makes them easier to find during a manual migration pass.

How to use it

1. Open the tool and complete the unlock step if the page asks for verification.
2. Paste a small group of Apache .htaccess rules into the Apache .htaccess editor.
3. Review the generated Nginx snippet in the Nginx Configuration editor on the right.
4. Look for any # Unsupported rule: comments and decide whether those Apache lines need a manual rewrite.
5. Use the Copy button to copy the output into your notes, staging config, or migration checklist.
6. Test the final Nginx configuration in a staging environment before applying it to production.

For best results, convert a small block of related rules at a time. A short group of redirects is easier to inspect than a long inherited .htaccess file with authentication, content negotiation, compression, caching, PHP handler, WordPress, and security-module directives mixed together.

Example conversion

A simple Apache input might look like this:

# Old page redirect
RewriteRule ^old-page$ /new-page [R=301,L]
Redirect 302 /temporary-page /preview-page
ErrorDocument 404 /404.html
DirectoryIndex index.php index.html
Options -Indexes

The generated output would be similar to:

# Generated by CyberTools Htaccess to Nginx Converter

#  Old page redirect
rewrite ^/old-page$ /new-page permanent;
rewrite ^/temporary-page$ /preview-page redirect;
error_page 404 /404.html;
index index.php index.html;
autoindex off;

This output is useful because it gets the obvious mapping work out of the way. It is still not the same as a finished Nginx site configuration. You may need to place a line inside the correct server or location block, adjust paths for your document root, replace a rewrite with a more direct return 301, or change the rule order after testing real URLs.

Apache and Nginx are not drop-in equivalents

The biggest migration trap is assuming that a valid .htaccess line has a single universal Nginx equivalent. Apache commonly allows distributed configuration files inside directories. Nginx normally reads centralized configuration, where rule placement depends on the selected virtual host, server block, location matching, and request-processing phase. That difference affects rewrites, redirects, access rules, indexes, error pages, and path matching.

Apache mod_rewrite rules in .htaccess also behave differently from rewrite rules in a main server config. Patterns are often written relative to the current directory, while Nginx rewrite patterns usually see a URI beginning with a slash. This converter tries to help by inserting a leading slash in certain RewriteRule patterns that do not already start with ^/, but that is only a formatting assist. It does not prove that the migrated regular expression matches the same requests.

Inputs, outputs, and limits

Rules that need manual migration

Expect manual work for anything beyond straightforward rewrites and redirects. This converter does not handle RewriteCond, environment variables, per-directory inheritance, authentication directives, IP allow and deny rules, MIME type changes, compression settings, cache headers, custom PHP handler directives, Files or FilesMatch blocks, WordPress-specific front-controller logic, or rules from Apache modules that do not have a direct Nginx equivalent.

Query strings and captures deserve special attention. A copied rewrite may need $1 handling, an explicit query-string policy, or a different Nginx directive. Apache flags such as QSA, NC, END, F, G, PT, and E= are not modeled by this converter. The presence of one of those flags should be a signal to check the rule manually rather than trust the generated line.

Testing checklist before production

• Run nginx -t or your hosting provider's equivalent config test before reloading Nginx.
• Test old and new URLs with the expected methods, status codes, and final destinations.
• Check whether redirects preserve, drop, or change query strings intentionally.
• Confirm that rule order does not shadow static files, API routes, admin paths, or framework front controllers.
• Review access logs and error logs in staging before copying the change to production.
• Keep a rollback path for the previous working Nginx configuration.

After deployment, a separate URL check is still useful. The HTTP Status Code Checker can help inspect whether a public URL returns the expected response code, while server logs and browser developer tools can show problems that a single status check will not catch.

Related migration tools

If you are still writing Apache rules, the .htaccess Redirect Generator can draft basic HTTPS, www, non-www, 301, and 302 redirect snippets for Apache. If you need to move the other direction, the Nginx to .htaccess Converter provides a browser-side starting point for simple Nginx-to-Apache rewrite translation. For response-header work around a migrated site, the CSP Header Generator can help draft a Content Security Policy value that still needs site-specific testing.

Use this converter as a practical first pass, not as the final authority on your server behavior. The safest workflow is to convert, read every generated line, resolve unsupported comments, test in staging, validate Nginx syntax, and then verify live responses after a controlled rollout. If a tool behavior looks wrong or a migration case needs review, you can use the contact page to report it.