Developer Tools

Pretty-print messy JSON with stable indentation so nested objects and arrays are easy to scan.

248k uses

Check whether a JSON document parses cleanly and surface syntax issues before you ship a payload.

165k uses

Strip extra whitespace from JSON to shrink payloads for logs, APIs, config flags, and compact storage.

91k uses

Decode a JSON Web Token header and payload locally to inspect claims without verifying on a server.

155k uses

Create RFC-style UUIDs in the browser for database IDs, test fixtures, and idempotency keys.

198k uses

Hash text locally with common digest algorithms to compare checksums and fingerprint strings.

188k uses

Try regular expressions against sample text and inspect matches without leaving the browser.

128k uses

Convert Unix epoch seconds or milliseconds to readable dates and back, entirely on-device.

120k uses

Turn reserved HTML characters into entities so example snippets paste safely into markup.

76k uses

Restore HTML entities back to readable characters when you need the original snippet again.

70k uses

Convert integers between binary, octal, decimal, and hexadecimal without a calculator app.

88k uses

Split a URL query into keys and values so campaign, pagination, and API parameters are easy to read.

95k uses

Translate a cron expression into plain-language timing so job schedules are easier to review.

81k uses

Compare two text blocks side by side and highlight insertions, deletions, and small edits.

134k uses

Escape quotes, slashes, and control characters so a raw string can sit safely inside JSON.

68k uses

Turn escaped JSON string content back into readable text with real quotes and line breaks.

64k uses

Compress stylesheets by removing comments and extra whitespace for smaller CSS payloads and snippets.

80k uses

Collapse HTML by trimming extra whitespace so markup snippets and email fragments ship smaller.

77k uses

Inspect characters, code points, and escape sequences for copy that looks simple but is not.

59k uses

Look up MIME types from file extensions so uploads, headers, and download links stay consistent.

54k uses