How to compress photos and videos on iPhone with SlimPix

Running out of storage on your iPhone? Photos and videos are the biggest space hogs on most devices. SlimPix is a new app from One4Studio that lets you compress them by up to 80% without visible quality loss — and everything happens on your device, so your files never leave your phone.

SlimPix gives you multiple ways to reclaim storage. Use the Custom Picker to select exactly what to compress — skip already-optimized files, filter by album, and sort by size to tackle the biggest files first. Or use Remove Clutter to see your storage hogs categorized by type, so you know exactly where your space is going.

Here's how to get started:

1. Download SlimPix from the App Store (it's free to use).
2. Use the Custom Picker to select photos or videos you want to compress — filter by album and sort by size to find the biggest files.
3. Adjust your compression level using the built-in sliders, or pick a preset for quick results. You can also downscale 4K videos to save even more space.
4. Tap 'Compress' and watch the before-and-after sizes. SlimPix shows you exactly how much space you saved.
5. Try the Swipe Cleaner for a fast way to review and delete photos one by one — swipe to keep or delete, like a Tinder for your photo library.
6. Use Remove Clutter to find duplicate photos and bulk-delete them in one tap.
7. Check Advanced Settings to configure batch workflows, strip metadata for privacy, or even compress your app icons.

SlimPix supports HEIC, JPEG, PNG photos and all common iOS video formats (MOV, MP4). The free version gives you access to every feature with daily limits (30 photo compressions, 3 video compressions, 10 duplicate deletions, and 30 swipe deletions per day). SlimPix Pro removes all limits for unlimited use.