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Edwin Lab

Hash Generator

Generate a SHA hash from text or one local file. Choose SHA-256, SHA-384, or SHA-512 and copy the hexadecimal digest.

Limit: 5 MiB of UTF-8 text. Textarea line endings may be normalized by the browser.

Limit: 20 MiB. Files are hashed as raw bytes.

Ready. Text is hashed as UTF-8; files use their original bytes.

How to use this tool

  1. Enter or select your input.
  2. Choose the action shown above to process it in this browser.
  3. Review the result before copying or downloading it.

Limits and behavior

A hash is a one-way digest, not encryption. Empty text and empty files are valid inputs. The same filename does not affect file content hashes; changed bytes, line endings, or Unicode encoding produce different digests. Web Crypto is non-streaming, so the tool limits input size and may take longer on slower devices.

Is my input uploaded?

No. Processing runs locally in this browser; this page does not send tool input to a server.

Frequently asked questions

Does this page upload or save my input?

No. The tool runs in your browser and does not place input in its URL or browser storage. Your browser may keep its own clipboard or download history if you use those features.

What happens when input is outside the supported format?

The page reports a validation message and keeps your input available to edit. Review the stated limits and examples before copying a result. Browser support and available memory can also affect processing time.

Can this replace a full development or security system?

No. This focused utility handles only the formats and operations described above. Validate important outputs in the application or workflow where you plan to use them.

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