JWT Generator
Generate HS256 JWTs from editable header, payload, and secret.
66 visitors
Developer Tools
A collection of free online developer tools for formatting, validation, encoding, decoding, conversion, hashing, UUID generation, regex testing, cron generation, timestamp conversion, and color utilities.
JSON Validator
Validate JSON and show error line numbers with clear messages.
65 visitors
HTML Formatter
Beautify or minify HTML for cleaner markup and smaller payloads.
58 visitors
SQL Formatter
Beautify SQL with uppercase or lowercase keywords and line breaks.
53 visitors
XML Formatter
Beautify XML documents with syntax-friendly output and download.
52 visitors
Base64 Encoder
Encode text or file contents to Base64 for data URIs and APIs.
49 visitors
JSON Minifier
Compress JSON by removing whitespace with character counts.
47 visitors
JWT Decoder or Encode
Decode JWT header, inspect, encode and verify JSON Web Tokens with header, payload without verifying the signature, claims and expiration analysis.
47 visitors
UUID Generator
Generate one or many UUID v4 values with copy and download.
47 visitors
SHA256 Generator
Generate SHA-256 hashes for integrity checks and fingerprints.
45 visitors
Base64 Decoder
Decode Base64 strings back to text or downloadable bytes.
44 visitors
CSS Minifier
Minify or beautify CSS and optionally strip comments.
43 visitors
JavaScript Minifier
Minify or beautify JavaScript with character count feedback.
43 visitors
URL Decoder
Decode percent-encoded URLs back to readable text.
43 visitors
XML Validator
Validate XML structure and surface parser errors with line hints.
42 visitors
Color Picker
Pick colors and copy HEX, RGB, HSL, and HSV values.
42 visitors
MD5 Generator
Generate MD5 hashes for checksums and legacy integrations.
41 visitors
Regex Tester
Test regular expressions with flags, match highlights, and a cheat sheet.
40 visitors
JSON Formatter
Beautify JSON with indentation, tree view, upload, download, and copy.
39 visitors
YAML Converter
Convert between YAML, JSON, and XML for config and API workflows.
39 visitors
Unix Timestamp Converter
Convert Unix time ↔ human dates with timezone support.
37 visitors
URL Encoder
Percent-encode URLs and query strings safely for HTTP.
34 visitors
XML to JSON Converter
Convert XML documents into pretty-printed JSON instantly.
33 visitors
Cron Expression Generator
Build cron expressions with human-readable descriptions.
33 visitors
CSV to JSON Converter
Upload CSV, choose a delimiter, and export pretty JSON.
32 visitors
RGB to HEX Converter
Convert RGB channels to HEX with live preview.
30 visitors
HEX to RGB Converter
Convert HEX colors to RGB with live preview.
28 visitors