Developer Tools, Simplified
Essential tools for modern developers. JSON formatter, Base64 encoder, UUID generator, regex tester, and more — all free, fast, and private.
Formatters
Format and beautify code
Encoders & Decoders
Encode and decode data
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings with URL-safe variant support.
URL Encoder / Decoder
Encode, decode, and parse URLs with full component breakdown and query parameter table.
JWT Decoder & Verifier
Decode and verify JSON Web Tokens with signature validation, live expiry countdown, and claim explanations.
HTML Entity Encoder / Decoder
Encode and decode HTML entities with named and numeric entity support.
JWE Encrypt / Decrypt
Inspect, encrypt, and decrypt JSON Web Encryption tokens with AES-GCM and RSA-OAEP.
Generators
Generate data and identifiers
UUID Generator
Generate and validate UUID v4, UUID v7, and ULID identifiers with timestamp extraction.
Hash Generator
Generate and verify MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files.
Lorem Ipsum Generator
Generate placeholder text as paragraphs, sentences, or words with optional HTML wrapping.
Testers
Test and validate patterns
Regex Tester
Test, replace, and explain regular expressions with live highlighting and named groups.
Diff Checker
Compare text with line-level and word-level diff, collapsible sections, and patch export.
Cron Expression Parser
Parse cron expressions with human-readable descriptions and next execution times.
Converters
Convert between formats