Developer Tools
Format JSON, validate payloads, encode Base64, generate UUIDs, and calculate hashes.
Featured workspace
JSON Formatter
Prettify unstructured JSON strings with custom 2-space or 4-space indentations.
Developer Tools · All tools (6)
Choose a tool below to open its workspace.
JSON Validator
Verify RFC 8259 compliance, highlight syntax mistakes, and pinpoint line errors.
JSON Minifier
Compress JSON payloads by stripping line breaks and unnecessary whitespace for network transport.
Base64 Encoder/Decoder
Encode plain text and binary sequences into ASCII Base64 or decode encoded payloads.
URL Encoder/Decoder
Convert query strings, special symbols, and characters into percent-encoded URL formats and back.
UUID Generator
Create cryptographically strong UUID v4 (random) and time-ordered UUID v7 identifiers in bulk.
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic digests from raw input.
Guides & Reference · Developer Tools
PNG vs WebP: Comparing Modern Compression Ratios & Visual Fidelity
Understanding PDF Linearization, Page Trees, and Incremental Updates
RFC 8259 Guide: Strict JSON Parsing, BigInt Precision, and UTF-8 Safety
Frequently Asked Questions
Related categories
Image Tools
Convert, compress, resize, crop, and inspect image files with speed and privacy.
PDF Tools
Merge, split, rotate, convert, and count pages across all your PDF documents.
Text Tools
Word counts, character metrics, case transformation, sorting, and diff comparisons.