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Developer utilities

Format, encode, inspect, and make sense of your data.

23 tools23 available now

Developer utilities tools

JSON formatterFormat, validate, or minify JSON locally in your browser.Available
Base64 encoderEncode UTF-8 text as Base64 or decode a Base64 text value locally.Available
UUID generatorGenerate up to 100 cryptographically random version 4 UUIDs locally.Available
Hash generatorCalculate SHA-256, SHA-384, and SHA-512 hashes.Available
Credit card generatorCreate credit-card test fixtures using published Stripe sandbox numbers.Available
Debit card generatorCreate Visa and Mastercard debit-card fixtures for sandbox testing.Available
Prepaid card generatorCreate Mastercard prepaid fixtures for Stripe sandbox checkout tests.Available
Card number validatorCheck the Luhn checksum of a test card number locally.Available
YAML formatterFormat and validate YAML data.Available
XML formatterMake an XML document readable.Available
Regex testerTry a regular expression against sample text.Available
JWT inspectorDecode a token and inspect its header and claims.Available
URL parserInspect the components of a URL.Available
ULID generatorGenerate sortable unique identifiers.Available
Cron expression helperBuild and understand a cron schedule.Available
Unix timestamp converterConvert Unix timestamps to readable dates.Available
HMAC generatorCalculate keyed message authentication codes.Available
HTTP request builderPrepare a request with headers, parameters, and a body.Available
cURL builder & parserCreate a cURL command or inspect an existing one.Available
Code diff checkerCompare two versions of a code snippet.Available
Environment variable formatterClean up and convert environment variable definitions.Available
API response formatterMake a captured API response easier to read.Available
Code paste sharingShare an expiring code snippet.Available
Full category roadmap

All the capabilities planned for this category. Availability is shown on each tool above.

  • JSON formatter and validator
  • YAML formatter
  • XML formatter
  • Regex tester
  • JWT decoder and inspector
  • Base64 encoding/decoding
  • URL parser
  • UUID/ULID generation
  • Cron expression helper
  • Unix timestamp conversion
  • Hash and HMAC utilities
  • HTTP request builder
  • cURL command builder/parser
  • Diff checker
  • Environment-variable formatter
  • API response formatter
  • Code snippets and paste sharing

“Coming soon” means planned, not available. We’ll only mark a tool ready when you can actually use it.