Developer Tools

Format, decode, generate, and test — nothing you paste here ever leaves your browser.

• JSON Formatter & ValidatorFormat, validate, and beautify JSON instantly in your browser.
• JSON to XML ConverterConvert JSON to XML and back, entirely in your browser — no server round-trip.
• Base64 Encoder / DecoderEncode or decode Base64 text instantly, entirely client-side.
• JWT DecoderDecode a JSON Web Token's header and payload in your browser.
• URL Encoder / DecoderPercent-encode or decode URLs, or generate an AES-256-GCM encrypted Secret URL — entirely client-side.
• Regex TesterTest regular expressions against sample text with live match highlighting.
• UUID GeneratorGenerate RFC 4122 v4 UUIDs instantly in your browser, one or in bulk.
• Hash Generator (MD5 / SHA)Generate MD5, SHA-1, SHA-256, or SHA-512 hashes instantly, entirely in your browser.
• Escape JSON StringEscape quotes, backslashes, and control characters so text can be embedded as a JSON string value.
• Unescape JSON StringConvert an escaped JSON string literal back into its original, readable text.
• Escape RegexEscape every regex special character in a string, so it can be matched as a literal pattern.
• Regex GeneratorGet a ready-to-use regular expression for common patterns like email, URL, phone number, and more.
• Escape SQL StringEscape single quotes in a string so it's safe to use as a literal inside a SQL query.
• Escape XMLEscape &, <, >, quotes, and apostrophes so text is safe to embed inside XML.
• Escape HTMLEscape &, <, >, and quotes so user-supplied text is safe to render inside HTML.
• SQL FormatterPretty-print a one-line SQL query into readable, indented multi-line SQL.
• CSV Pretty PrinterAlign CSV data into a padded, readable monospace table for quick eyeballing.