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Developer Tools

Useful browser-side utilities for structured data and token inspection.

3 free toolsUpdated daily✓ 100% FreeWeb Application

Format and validate JSON, calculate SHA digests, or inspect the readable parts of a JWT in your browser. Token decoding is not signature verification, and hashes are not a substitute for password hashing.

Popular Developer Tools Calculators

•Hash Generator •JSON Formatter •JWT Decoder

All Developer Tools Tools

3 carefully crafted calculators and tools to help you with developer tools

Free to useNo signupInstant results

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Hash Generator

Generate SHA-256, SHA-384, or SHA-512 digests for a text input using the browser's Web Crypto API. SHA-1 is offered only for legacy compatibility comparisons.

Calculate a SHA digest for text in your browser.

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JSON Formatter

Parse JSON to catch syntax errors, then format valid data with consistent indentation. Your pasted content is handled in this browser tab.

Validate structure and make JSON easier to inspect.

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JWT Decoder

Decode the Base64URL-encoded header and payload of a JSON Web Token for debugging. This local inspection does not verify its signature or make the token safe to share.

Inspect a token's readable header and payload.

Paste data only when appropriate for your environment. The tools run in the browser, but JWT contents are still sensitive and must not be shared publicly. Decoding a token does not verify its signature.