Import locally
Pick a file from Files, Photos, or the iOS share sheet. Originals are copied to a temporary local workspace.
iPhone utility
Local File Diet
Compress images, PDFs, videos, and ZIP files to the size you need. Privately, on your iPhone.
Paid upfront app. Unlimited compressions after download. App Store release coming soon.
Workflow
Built for quick file-size limits
Use it when a file is too large for email, upload forms, portals, or a fast share.
Choose a target
Select a preset such as 25 MB, 10 MB, 5 MB, or enter a custom size in MB or KB.
Compress on-device
The app uses native iOS frameworks and keeps the work on the phone. No cloud compression service is used.
Share or save
Export the smaller file, save compressed media, or start another import from the result screen.
Privacy by design
No uploads. No account. No tracking.
Local File Diet is designed as a local-first utility. It does not require sign-in, does not include advertising SDKs, and does not collect file contents, file names, paths, analytics, or tracking identifiers.
See the full privacy policy
Files stay local
Compression happens on the device.
Originals are preserved
User-selected originals are never modified.
Local history only
Recent compression metadata stays on the phone and can be cleared.
Formats
Supported in the first release
Images
JPEG, PNG, HEIC/HEIF, TIFF input
PDF
Scanned, image-heavy, and mixed documents
Video
MOV, MP4, and M4V exports
ZIP
Local ZIP creation for grouped files
App Store links