Hash Lab

How to use Hash Lab

Paste input, select a command and its options, then run the transformation. Review diagnostics before copying or downloading the result. Input is not executed.

A chosen file takes priority over the text editor. Files are read locally, limited to 20 MiB, and processed with Web Crypto. Clear the file to hash text again. The comparison ignores surrounding whitespace and hexadecimal case; it is not a remote authentication protocol.

Hashing is not encryption or encoding. A digest is not reversible. Unkeyed hashes do not authenticate a sender and are not suitable password storage by themselves.

Privacy and boundaries

Editor contents stay in your browser. Transformations run in a disposable worker and are never sent to a formatting or AI service. History starts disabled; enabling it writes text to local browser storage only. Clearing that history removes this tool’s saved entries, not data saved by other applications. The surrounding website may load its normal navigation and analytics, but the utility workspace is excluded from content-interaction capture.

Use the labeled operation selector for the available capabilities. Keyboard users can reach every control with Tab; Ctrl or Command plus K opens the command palette. Copy requires clipboard permission. Download creates a local text file. Clear removes the current workspace; it does not automatically delete an opted-in history. Inputs and outputs are always rendered as text, never as a runnable preview.