Web tools

Use them right in your browser – no downloads, no installs.

7 tools

Build HTTPS and www redirects, caching, compression, security headers and error pages – output for Apache .htaccess and Nginx side by side.

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Everything your browser reveals: user agent, screen and viewport, pixel ratio, languages, time zone, supported features and media queries.

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Minify or prettify CSS and HTML and see exactly how many bytes you saved.

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Turn an image, emoji or letters into favicon.ico plus every PNG size and the matching HTML tags.

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Searchable reference of all HTTP status codes with their meaning, typical use and gotchas.

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Generate title, description, canonical, Open Graph and Twitter Card tags with a live search-result and social-card preview.

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Percent-encode or decode strings, split any URL into its parts and edit its query parameters in a table.

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