Compare the release tree before shipping
Use a folder pair for working trees and ZIP pair for release archives. A changed binary is reported by bytes; the tool does not claim to explain its internal format.
Compare Folders and ZIP Files
File tree difference report
Folder and ZIP inventory diff
Choose two folders or two ZIP archives
Choose two folders or two ZIP archives. Inventory and text checks run locally; binary files are compared by byte hash. Folder selection requires a browser that supports directory inputs.
Source A
Choose a folder or ZIP.
Source B
Choose a folder or ZIP.
Frequently Asked Questions About Online Calculators
Are folders uploaded?
No. Directory and ZIP entries are read in the browser; there is no server upload step.
Does it compare binary files semantically?
No. Binary files are compared by byte hash, while small text-like files can show a short preview of the changed content.
Will my original file be changed?
The result is downloaded as a separate file. Keep your original until you have checked the Folder and ZIP inventory diff.
What should I check before using the result?
Open the Folder and ZIP inventory diff in the application that consumes it and spot-check the parts that matter to you; the original file stays untouched if you need to re-run with different options.
Before downloading the result
Compare the Folder and ZIP inventory diff with the original while both are fresh; destinations differ, and a quick check here saves a re-upload later.