Developer
JSON Formatter / Validator
Validate, format and compact JSON without uploading your input.
Open toolSHA-256 Hash Generator
Hash UTF-8 text using browser Web Crypto and display its hexadecimal digest.
Maximum 200,000 characters. Input is not stored.
Ready. Use Ctrl/⌘ + Enter to run.
Completed and failed run counts are stored only on this device.
How to use this tool
Paste exactly the text you want to hash. Spaces and newlines affect the digest; empty text is supported.
Supported input and limits
UTF-8 text only. Hashing is not encryption or password storage; use a password-specific KDF for stored passwords. Maximum main input: 200,000 characters.
Frequently asked questions
Does my input leave my browser?
No. A local worker processes it; text and files are not uploaded or stored.
Can the hash be reversed?
There is no decode operation. Low-entropy inputs can still be guessed by comparing candidate hashes.
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