The OS doesn't have to copy data into temporary buffers to read it.
zipalign -c -v 4 output-aligned.apk
Zipalign is part of the . It is a command-line utility located within the Build Tools. If you are searching for a direct download link on a random forum, stop. You risk downloading outdated or malicious software. zipalign download windows
Once you have downloaded and installed Zipalign, you can use it from the command line: The OS doesn't have to copy data into
For most Windows users: with SDK command-line tools, then add build-tools\latest\ to your PATH. Zipalign is lightweight (~300 KB), runs on any Windows 7/10/11 system, and is essential for release-quality APKs. If you are searching for a direct download
Why? Because signing attaches a signature file that must remain intact. If you modify (align) an already signed APK, you break the digital signature. The workflow should always be: