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Popular Tools
Format and beautify unformatted or minified JSON with customizable indentation.
Validate JSON syntax and locate line and column syntax errors.
Encode plain text or UTF-8 Unicode strings into Base64.
Decode Base64 encoded strings back into UTF-8 plain text.
Generate random RFC 4122 v4 UUIDs individually or in bulk.
Convert between Unix timestamps and ISO 8601 UTC / Local dates.
Decode JSON Web Tokens to inspect Header, Payload claims, and expiration.
Test regular expressions with match indices, flags, and capture groups in a Web Worker.
JSON
(7)Format and beautify unformatted or minified JSON with customizable indentation.
Validate JSON syntax and locate line and column syntax errors.
Compress and minify JSON files by removing unnecessary whitespace.
Interactive tree viewer to explore nested JSON objects.
Convert JSON objects and arrays into clean YAML configurations.
Convert YAML configuration files into valid, formatted JSON.
Convert JSON arrays or objects into downloadable RFC 4180 CSV files.
Encoding
(6)Encode plain text or UTF-8 Unicode strings into Base64.
Decode Base64 encoded strings back into UTF-8 plain text.
Encode URLs or query string parameters to percent-encoded format.
Decode percent-encoded URL strings back into plain text.
Convert HTML special characters into safe entity references.
Decode HTML entities back into plain text safely.
Identifiers & Time
(3)Generate random RFC 4122 v4 UUIDs individually or in bulk.
Validate UUID syntax and determine version and variant compliance.
Convert between Unix timestamps and ISO 8601 UTC / Local dates.
Security & Web
(2)Developer Utilities
(3)Test regular expressions with match indices, flags, and capture groups in a Web Worker.
Build and explain 5-field Unix cron schedule expressions in plain English.
Convert colors between HEX, RGB(a), HSL(a), and CMYK formats.