All tools

Beautify, minify and validate JSON, sort by key and see the exact error position. Everything runs in your browser — your data never leaves your device.

Paste a .env file and get a .env.example that is safe to commit: keys, passwords and connection strings are masked, comments and harmless settings are kept.

Beautify or minify SQL for PostgreSQL, MySQL, SQLite, SQL Server, BigQuery and more, with consistent keyword case.

Convert PNG and JPG to WebP in your browser, in batches, with quality and width controls. The images are never uploaded to a server.

Shrink image file size in your browser: choose JPEG, WebP or PNG, adjust quality and maximum width. Nothing is uploaded to a server.

Generate title, description, canonical and robots tags, with live warnings when they exceed the length search results actually display.

Generate a robots.txt and test, with the same rules, whether a given path ends up allowed or blocked — plus one-click blocking for the common AI crawlers.

Paste your sitemap.xml to check the root element, namespace, loc URLs, lastmod dates, duplicates and the 50,000-entry limit.

Generate Content-Security-Policy, HSTS, X-Content-Type-Options and the rest, in plain, nginx or vercel.json form — with warnings for the settings that usually backfire.

Generate schema.org JSON-LD for Article, FAQPage, Organization, Product and breadcrumbs, with warnings for the properties Google requires.

Generate og:title, og:description, og:image and Twitter Card tags, with guidance on preview image size and the usual pitfalls.

Turn a list of languages and URLs into hreflang link tags, HTTP Link headers or sitemap entries, checking the language codes, absolute URLs and x-default.