HMAC Generator

100% Client-Side

HMAC Generator creates HMAC-SHA256, SHA-384 and SHA-512 signatures from text and a secret key. It runs entirely in your browser, so your data is processed locally in memory and never uploaded to a server. It is 100% free and needs no signup or account.

Accepted input:
TXT, Any
Output:
.txt

Example

order_id=INV-1001&amount=49.95
key: demo-secret
encoding: hex
Options

Type text, or select a file to sign its exact bytes.

Input

Output

How to use HMAC Generator

  1. 1

    Open HMAC Generator

    Add your file or enter your input in the HMAC Generator workspace above. Drag and drop works, and nothing is uploaded.

  2. 2

    Choose your options

    Adjust any settings you need, such as order, quality, size or format. The tool does the rest on your device.

  3. 3

    Process and save

    Run HMAC Generator and download or copy the result. It happens instantly in your browser, and your data stays private.

In-Browser vs. Server-Based Tools

Comparison of client-side in-browser processing and traditional server-based processors
FeatureAnyTool Studio (in-browser)Traditional server-based
PrivacyFiles stay on your device and are never transmitted.Files are uploaded to and processed on a third-party server.
SpeedNo upload or download wait; speed depends on your device.Upload and download time grows with file size and connection speed.
File size limitsNo imposed limit; bounded by your device's memory.Commonly capped per file or per task, with higher limits on paid plans.
Account requiredNo signup or login.Often required for larger files or repeated use.
Data retentionNothing to retain; data is cleared from memory.Files may be stored for a period before deletion.

Frequently Asked Questions

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