CRC32 & Adler-32 Checksum Generator
Developer ToolsGet the CRC32 and Adler-32 checksum of any text
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →CRC32 & Adler-32 Checksum Generator — at a glance
Get quick integrity checksums for text.
How to use it — step by step
Any text. It is read as UTF-8 bytes.
Add your text
Paste or type your input into the box. The Sample button fills in an example.
Press Get Checksums
The result is made instantly inside your browser.
Copy the result
Use the Copy button, or send it to another tool.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What is CRC32?+
A 32-bit check value used in ZIP, PNG, Ethernet and many file formats to catch damaged data.
Is it a hash for passwords?+
No. It is easy to forge. Use a proper hash for security.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.