Folder & ZIP Difference Checker
Upload two zipped folders to compare their contents — see added, removed, and modified files with inline line-level diffs.
Drop folder.zip
Click to browse or drag & drop
Drop folder.zip
Click to browse or drag & drop
The Folder & ZIP Difference Checker lets you compare two zipped folders and see exactly which files were added, removed, or modified — with inline line-level diffs for text files. It is useful for comparing project snapshots, reviewing changes between software releases, or auditing what changed between two backup archives. Upload two ZIP files and the tool gives you a filterable file tree with change counts and expandable diffs.
Zip your folders
Compress each folder into a .zip archive using your OS or any zip tool.
Upload both ZIPs
Drop each archive into the respective upload panel — original on the left, modified on the right. Each ZIP must be under 10 MB.
Explore changes
Click "Compare Folders" to see added, removed, and modified files. Click any modified file to expand its inline diff.
- Only .zip format is supported — convert .rar, .tar, or .7z archives before uploading.
- Binary files (images, executables) are listed as added/removed/modified but no line-level diff is shown for them.
- For large repos, zip only the relevant subdirectory rather than the entire project to keep uploads fast.
Comparing software releases and deployment packages
Before or after deploying a new release, zip the two versions of your project and upload them here to see a full diff of the directory tree — which files were added, removed, or modified, with expandable line-level diffs for every changed text file. This gives you a human-readable changelog of exactly what shipped, which is useful for post-deploy audits, rollback decisions, and release notes generation.
Reviewing changes between backup archives
If you maintain periodic backups of a project folder, comparing two ZIP archives tells you exactly what changed between snapshots — new files added, old files deleted, and which existing files were edited. This is faster than running a recursive file comparison manually and gives you a visual tree rather than a wall of terminal output.
Auditing theme or template updates
WordPress theme updates, design template packs, and CMS plugin updates are typically distributed as ZIP archives. Before applying an update, compare the new ZIP against your current installed version to see exactly which files changed. This helps you identify whether any customisations you made to the original files would be overwritten, so you can re-apply them after updating.
Validating build output consistency
CI/CD pipelines that produce build artifacts can sometimes produce slightly different outputs between runs due to non-deterministic bundling, timestamps embedded in files, or environment differences. Zip two build outputs and compare them to confirm the build is deterministic, or to isolate exactly which files differ between a working and a broken build.
Client file handoff verification
Agencies and freelancers delivering project files to clients can zip the final deliverable and compare it against the agreed file list or a previous handoff to confirm that all assets are present, nothing was accidentally omitted, and no extra files crept in. The file tree view with added/removed/modified indicators makes this sign-off check fast and unambiguous.
Frequently Asked Questions
Want to learn more?
Read our guide: How to Compare Two ZIP Archives and Folder Structures Online