Developer Tools
JSON, XML, HTML, CSS, JavaScript and SQL formatters and minifiers, Base64 and URL encoders, JWT decoder, hash generators and UUID tools.
JSON Formatter
Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.
JSON Validator
Validate JSON online and find syntax errors with exact line and column numbers. See root type, key counts and nesting depth — free, instant and 100% private.
XML Formatter
Format and beautify XML online with proper indentation, or minify it to a single line. Parse errors are reported clearly — free, fast and fully private.
XML Validator
Validate XML online and check it is well-formed. Get the browser parser's exact error message, plus element and attribute counts for valid documents. Free and private.
HTML Formatter
Beautify HTML online with clean, consistent indentation. Handles void elements and preserves pre, script and style content exactly. Free, instant and private.
HTML Minifier
Minify HTML online: strip comments, collapse whitespace between tags and shrink page size. See bytes saved instantly. Free, private, runs in your browser.
CSS Formatter
Format and beautify CSS online: one declaration per line, tidy indentation, spaces after colons and support for nested at-rules. Free and 100% private.
CSS Minifier
Minify CSS online: remove comments and whitespace, drop trailing semicolons and shorten hex colors. See bytes and percent saved. Free, instant, private.
JavaScript Formatter
Beautify JavaScript online with token-aware indentation. Respects strings, template literals, regex and comments. A quick, private, in-browser JS formatter.
JavaScript Minifier
Minify JavaScript online safely: strip comments and collapse whitespace without renaming or rewriting code. See bytes saved. Free and 100% in-browser.
SQL Formatter
Format SQL online: uppercase keywords, new lines before SELECT, FROM, WHERE and JOIN, indented AND/OR conditions. One-line minify included. Free and private.
Base64 Encoder
Encode text or files to Base64 instantly in your browser. UTF-8 safe, with a URL-safe Base64 option, copy and download. Free online Base64 encoder.
Base64 Decoder
Decode Base64 to readable text or download it as a file. Handles URL-safe base64url and missing padding automatically. Free, private, in-browser decoder.
URL Encoder
Percent-encode text for URLs instantly. Switch between encodeURIComponent and encodeURI modes, see live output and copy the result. Free URL encoder.
URL Decoder
Decode percent-encoded URLs back to readable text instantly. Optional '+ as space' handling for query strings and clear errors for malformed input.
JWT Decoder
Decode JWT header and payload instantly, with human-readable iat/exp/nbf timestamps and an expiry badge. Client-side only — tokens never leave your browser.
MD5 Hash Generator
Generate MD5 hashes of text or files instantly in your browser. 32-character hex checksum with uppercase option and one-click copy. Free and private.
SHA-1 Hash Generator
Compute SHA-1 hashes of text or files in your browser using Web Crypto. 40-character hex digest with uppercase option and instant copy. Free and private.
SHA-256 Hash Generator
Generate SHA-256 hashes of text or files with the browser's Web Crypto API. 64-character hex digest, uppercase option, instant copy. Free and private.
SHA-512 Hash Generator
Compute SHA-512 hashes of text or files right in your browser. 128-character hex digest with uppercase option and one-click copy. Free, fast, private.
UUID Generator
Generate 1–100 cryptographically random UUID v4 identifiers at once. Uppercase and hyphen-less options, per-item copy and copy-all. Free UUID generator.
Random Buffer Generator
Generate cryptographically secure random bytes at any size. Output as hex, Base64 or a downloadable binary file — perfect for keys, salts, tokens and test data.