Reduce the size of your PDF documents without sacrificing quality. Optimize PDFs for storage, sharing, and faster loading. Effortlessly manage and share your compressed files anywhere.




249+ iOS apps curated and reviewed
The best file size reducer app on iPhone average 4.4★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.3★ (82) | No | Yes | Sep 2026 | ||
| 2 | Free | 4.7★ (22K) | Yes | Yes | Sep 2026 | ||
| 3 | Free | 4.3★ (57) | Yes | Yes | Sep 2026 | ||
| 4 | Free | 5.0★ (16) | Yes | Yes | Jul 2026 | ||
| 5 | Free | 4.3★ (313) | Yes | Yes | Sep 2026 | ||
| 6 | Free | — | No | Yes | May 2026 | ||
| 7 | Free | 4.2★ (86) | No | No | Aug 2026 | ||
| 8 | Free | 4.1★ (65) | Yes | Yes | Sep 2026 |




Reduce the size of your PDF documents without sacrificing quality. Optimize PDFs for storage, sharing, and faster loading. Effortlessly manage and share your compressed files anywhere.





Reduce the file size of your photos and reclaim storage space on your device. This app offers intelligent compression to maintain image quality while significantly shrinking files for faster sharing and easier storage. It supports various file types and offers advanced tools for privacy and export.






Easily reduce the size of your PDF files with this utility app. It offers a range of tools to compress, edit, and convert PDFs, saving you disk space and improving upload/download speeds. Features include OCR, merging, page removal, and security options.