Developer Tools
Format and validate JSON, encode/decode Base64 and URLs, and generate RFC-compliant UUIDs with instant client-side feedback.
FEATURED
JSON Formatter
Format JSON into readable, indented text or minify it into a compact form. Paste your JSON, choose an indentation style, and copy or download the result.
DEV / JSONOpen Tool
DEV / JSON
JSON Validator
Validate JSON syntax against RFC 8259, pinpoint parse error locations, and inspect root type and key metrics.
DEV / JSONOpen Tool
DEV / JSON
Base64 Encoder / Decoder
Encode and decode UTF-8 text to and from standard or URL-safe Base64 without mangling multi-byte Unicode characters.
DEV / JSONOpen Tool
DEV / JSON
UUID Generator
Generate cryptographically random RFC 4122 v4 UUIDs in bulk with uppercase, hyphenless, and brace formatting options.
DEV / JSONOpen Tool
DEV / JSON
URL Encoder / Decoder
Percent-encode and decode URL query components or full URIs with safe handling of malformed percent sequences.
DEV / JSONOpen Tool
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