Super-fast compression
Watch a live progress screen and get your smaller PDF back in seconds, not minutes.
PDF Compressor for iPhone & iPad
Compress PDF files
in seconds.
Reduce PDF size by up to ~60% straight from your iPhone or iPad. Beat email attachment limits and upload caps, and free up storage — with six compression levels and zero ads.
On a computer? Scan with your iPhone or iPad camera to open the App Store.
- Free to try
- No ads
- Files auto-deleted after processing
~60%smaller PDFs at the strongest level
6compression levels to choose from
iPhone + iPadbuilt natively with Swift & SwiftUI
0 adsjust you and your documents
How it works
How to compress a PDF on iPhone
Three taps from a heavy PDF to a file that’s ready to send.
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1
Pick your PDF
Select a file from Files, iCloud Drive, email attachments or any app that can share a PDF.
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2
Choose a compression level
From “No Quality Loss” to “Screen Optimized” — see the estimated reduction before you start.
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3
Share the smaller PDF
Your compressed file is saved in the app. Send it by email, Messages, AirDrop or upload it anywhere.
Compression levels
Reduce PDF size your way
Pick the balance between quality and file size. Tap a level to preview the result on a 20 MB PDF.
Original
20.0 MB
Compressed
9.0 MB
55%smaller — estimated
Estimates based on typical documents. Actual results depend on the content of your PDF — scans and image-heavy files shrink the most.
Features
Everything you need to compress PDFs
A focused tool that does one thing very well.
6 compression levels
Lossless to maximum reduction, each with a clear description and estimated savings.
Folders & file manager
Keep compressed PDFs organised in folders, search them, and share or rename in a tap.
Password-protected PDFs
Got a locked file? Enter its password and compress it like any other document.
Private by design
Encrypted transfer, files deleted automatically after compression, and no ads or document tracking.
Made for iPhone & iPad
A fully native Swift & SwiftUI app that feels at home on iOS and iPadOS.
Use cases
When you need a smaller PDF
Whenever “file too large” gets in your way.
Send by email
Get past attachment limits — most email providers cap messages around 20–25 MB — without splitting your document.
Upload to portals & forms
Job applications, visa forms, school and government portals often cap uploads at a few megabytes. Shrink your PDF to fit.
Save storage
Scanned contracts, invoices and ebooks add up. Compress them and reclaim space on your iPhone or iCloud.
Share faster
Smaller files send, sync and open faster on slow connections — perfect for WhatsApp, Slack and Messages.
Your documents stay yours
Files travel over an encrypted HTTPS connection, are held only for the moments needed to compress them, and are then automatically deleted. We don’t keep, analyze or access the contents of your PDFs — and there are no ads. Read the full Privacy Policy.
FAQ
Compress PDF — common questions
How do I compress a PDF on my iPhone?
Open PDF Compressor, pick a PDF from Files or any other location, choose a compression level and tap Compress. The smaller PDF is ready in seconds and saved inside the app, where you can share it by email, Messages, AirDrop or any other app.
How much can PDF Compressor reduce my PDF size?
It depends on the document. Depending on the level you choose, the app typically reduces file size by roughly 10% to 60%. Scans and image-heavy PDFs shrink the most; text-only PDFs are already small.
Will compressing a PDF reduce its quality?
You decide. The No Quality Loss level keeps the original quality, while stronger levels such as Web Optimized and Screen Optimized trade some image sharpness for a much smaller file. Print Quality keeps output suitable for printing.
Is PDF Compressor free?
The app is free to download and lets you try it with a few free compressions on smaller files. Unlocking unlimited compressions and larger files is available through an optional subscription managed through your Apple ID.
Are my PDF files safe?
Files are sent over an encrypted HTTPS connection, held only for the moments needed to compress them, and then automatically deleted. We do not keep, analyze or access the contents of your documents, and the app shows no ads.
Does it work on iPad?
Yes. PDF Compressor runs on iPhone and iPad with iOS or iPadOS 18.0 or later.
Can I compress a password-protected PDF?
Yes. If a PDF is protected with a password, the app asks you for it before compressing.
Make your PDFs smaller today
Download PDF Compressor and shrink your first file in under a minute.
Download on theApp Store
Or scan with your iPhone or iPad camera