Adler32
Adler-32 checksum.
How to use Adler32
Adler32 — Compute an Adler-32 checksum and print it as a decimal number. Free to use in D2i DevTools — no account required.
Steps
- Fill in Input. This field is required.
- Click Run and copy the result under the form.
Frequently asked questions
What is Adler32 used for?
Use it to compare checksums in zlib and similar formats. It is a fast error check, not a cryptographic hash.
How do I use the free online Adler32 tool?
Fill in Input. This field is required. Click Run and copy the result under the form.
What can I paste or upload into Adler32?
Paste the text as bytes. The checksum of Wikipedia is 300286872.
What output does Adler32 give me?
A decimal Adler-32 value, not hex. Different text can collide; do not use it as a unique id.
Is Adler32 free, and is my input private?
Yes — Your input is processed in memory for this request only. It is not saved to disk or the database, and it is cleared after the tool finishes.
Why is the result not 8 hex digits?
This page prints the unsigned decimal form. Convert it to hex yourself if you are comparing with a hex dump.
Inputs are processed in memory only and are not saved to disk or the database. Data exists only for the duration of your request.