Handle Unicode text and real files without corrupting bytes.
Runs locally in your browser
Decode the data,
not your patience.
Base64, JSON, URLs, UUIDs, hashes, and JWT inspection in one private workspace. Nothing you paste or open is sent to our servers.
DEVELOPER WORKBENCH
Everyday Developer Tools
Inputs stay on this device
01 · MOST USED
Base64 Encoder & Decoder
Convert Unicode text, binary files, standard Base64, URL-safe Base64, and Data URLs.
UTF-8FilesData URL
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02 · DATA
JSON Formatter & Validator
Beautify, minify, and validate JSON with useful syntax errors.
03 · WEB
URL Encoder & Decoder
Encode query values or preserve the structure of a complete URL.
04 · IDENTIFIERS
UUID v4 Generator
Generate cryptographically random UUIDs individually or in a batch.
05 · CHECKSUMS
Text & File Hash Generator
Calculate SHA checksums locally to compare content and verify downloads.
No file selected
06 · TOKENS
JWT Decoder
Inspect a token header and payload locally. This tool does not validate its signature.
Decode only · No verification
Tokens, JSON, files, and hashes never leave this browser.
Switch between six common tasks without opening another site.
Everyday developer conversions in one place
Encode Unicode text or files as Base64, rebuild files from Base64 or Data URLs, format and validate JSON, transform URL components, and generate batches of UUID v4 identifiers.
Calculate SHA hashes for text or files and inspect JWT headers, payloads, and expiration without sending source data to a server. JWT inspection does not verify signatures.