Free Up Your Library Storage
Compress EPUB files up to 70% smaller on your iPhone or iPad — reclaim space on your e-reader library in seconds. No cloud uploads, no quality loss.
Free to download • 100% On‑Device • Private
Why LiteBook
The smartest EPUB compressor
for iOS.
Compress EPUB files on-device — fast, private, and without losing quality.
100% On-Device
No uploads, ever. All compression processing happens locally on your device offline.
Private by Design
Your books stay private. Nothing goes online, ensuring complete data security.
Intelligent Trimming
Compresses books by removing unnecessary data and optimizing images without affecting quality.
Batch Processing
Compress multiple EPUB files at once. Save time and optimize your entire library in clicks.
Simple Workflow
From files to compressed EPUB
in three steps.
Import EPUBs
Select the EPUB files you want to compress from your device storage.
Choose Compression Type
Select your preferred compression level or choose lossless mode.
Compress & Save
Hit start and watch LiteBook shrink your files in seconds. Save them back to your device.
Simple Pricing
Unlock Unlimited
Compression.
Choose the plan that fits your library size.
Monthly Pro
Perfect for occasional cleanup.
- Unlimited EPUB Compression
- Batch Processing Support
- All Compression Tiers
Yearly Pro
For the serious digital librarian.
- Unlimited EPUB Compression
- Batch Processing Support
- All Compression Tiers
- Save over 50% compared to monthly!
EPUB Compression FAQ
Common questions about reducing EPUB file size with LiteBook.
LiteBook can reduce EPUB file sizes by up to 80% depending on the content. Files heavy with images typically see the biggest savings. Standard compression maximizes size reduction, while lossless mode preserves every byte of image data while still shrinking the file through structural optimization.
Simply open LiteBook, tap the import button to select your EPUB files from Files app or iCloud Drive, choose your compression level, and tap Start. LiteBook processes everything on-device in seconds and saves the compressed file back to your preferred location — no computer required.
No. LiteBook's compression algorithms target unnecessary metadata and optimize images without affecting layout or text quality. Your books will look exactly the same in any EPUB reader.
Never. LiteBook processes all files locally on your iPhone or iPad. We never upload your books to any server, ensuring complete privacy and security.
Standard compression applies aggressive optimizations to achieve maximum file size reduction. Lossless compression ensures every byte of image data is preserved perfectly while still reducing file size through structural and metadata optimization.
Yes! LiteBook supports batch processing, so you can import and compress your entire ebook library in one go. Select multiple EPUB files and compress them all with a single tap.
Yes. You can manage and cancel your subscription at any time through your Apple ID account settings.
Ready to reduce your EPUB file sizes?
Join thousands of readers compressing EPUB files on their iPhone & iPad — no uploads, no hassle.
Free to download • Secure & Private