Developer utilities

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

32 tools32 available now

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

Fake identity generatorCreate diverse synthetic names, addresses and companies.Available

Test bank account generatorGenerate fake IBAN and US bank account fixtures.Available

JSON Schema validatorValidate JSON with precise paths and readable errors.Available

JSON Schema from sampleInfer a reusable schema from representative JSON.Available

OpenAPI validatorValidate and lint OpenAPI 3.x with source locations.Available

Secret scannerFind likely exposed credentials without revealing their values.Available

Phone number validatorValidate and format international phone numbers.Available

Timezone converterConvert times with explicit daylight saving handling.Available

Date calculatorCalculate calendar dates and differences.Available

Credit card generatorGenerate unique fake credit card data or official payment sandbox numbers.Available

Debit card generatorGenerate unique fake debit card data or official payment sandbox numbers.Available

Prepaid card generatorGenerate unique fake prepaid card data or official payment sandbox numbers.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.

Formatters and inspectors
Sandbox payment fixtures
HTTP and cURL builders
Hash, HMAC and identifier utilities

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