Developer tools

Checksum / Hash Generator

Calculate SHA-256, SHA-384 or SHA-512 for text or a file, then compare it with an expected hash. Files stay local.

Inputs and files used by these developer tools stay in your browser.

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When to use it

Calculate SHA-256, SHA-384 or SHA-512 for text or a file, then compare it with an expected hash. Files stay local.

Before you export

Large files are hashed incrementally in a worker. SHA-1 is labelled legacy. A matching checksum alone does not establish who published the file.

How to use this tool

  1. Enter text or choose a file, then select the hash algorithm.
  2. Run the action and review errors, warnings or validation details.
  3. Copy or download the available result; reset clears the current task.

Supported input and output

Input
Text / File
Output
SHA-256 · SHA-384 · SHA-512 · SHA-1

Questions about this tool

Can a checksum prove a download is authentic?

Only compare with a hash obtained from a trusted source. If an attacker replaces both the file and the published hash, a matching value does not protect you.

Do my files or text leave this device?

Your source content is processed in this browser, not uploaded for processing. The browser may download a processing engine from Voice2Sub’s CDN. Those engine requests do not contain your source file.

Useful next steps

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UUID GeneratorDeveloper tools

Generate UUID v4 or time-ordered v7 values, or inspect an existing UUID. Choose a valid batch count from 1 to 100.

Need subtitles created automatically from audio or video?Voice2Sub can transcribe spoken audio when you need a complete subtitle workflow instead of a file utility.
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