Free Developer Tools – Format, Encode & Compare Code Online

Every developer keeps a mental list of small tasks that eat up time: prettifying a minified JSON blob, decoding a Base64 string from an API response, comparing two config files for a subtle difference. Tools Oasis puts 15+ free developer utilities in one place, all running client-side in your browser so sensitive code, tokens, and credentials never leave your machine.

The JSON Formatter and XML Formatter instantly beautify and validate messy payloads — perfect for debugging API responses or reviewing configuration files. The Code Formatter handles HTML, CSS, and JavaScript with proper indentation and syntax highlighting, while the CSS Minifier strips every unnecessary byte when you're ready to ship to production.

Encoding tasks come up constantly. The Base64 Encoder and Decoder handle text and binary data, the URL Encoder/Decoder takes care of query-string escaping, and the Hash Generator produces MD5, SHA-1, SHA-256, and SHA-512 digests on the fly. Need a secure password? The Password Generator creates cryptographically random strings with customizable length and character sets.

Rounding out the toolkit, you'll find a Text Diff viewer for side-by-side comparisons, a Markdown to HTML converter for documentation previews, a Lorem Ipsum generator for mockups, an Email Extractor for pulling addresses from messy text, an HTML Translator for localizing markup, and a Color Converter for jumping between HEX, RGB, and HSL. Zero installs, zero tracking, and zero limits.

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