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Best PDF Compression Apps

237+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

From beginner-friendly picks to power-user tools, our pdf compression list covers 237+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for PDF Compression

Acrobat Reader: PDF Editor#1

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Editor & Converter
Editor's Choice
💼 Business
4.7😞(628K ratings)
FreeAdsIn-App Purchases
#2in Business
Acrobat Reader: PDF Editor screenshot 1
Acrobat Reader: PDF Editor screenshot 2
Acrobat Reader: PDF Editor screenshot 3
Acrobat Reader: PDF Editor screenshot 4
Acrobat Reader: PDF Editor screenshot 5
Acrobat Reader: PDF Editor screenshot 6

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

What We Love

  • 🚀 Fast and efficient
  • 🔒 Secure document storage
  • 👍 Convenient for reading and annotating PDFs
  • 👍 Useful for students and professionals

Room to Improve

  • 🐛 Buggy and unreliable
  • 🔒 Overly intrusive login requirements
  • 💰 Expensive subscription model
PDF Compressor : Compress PDF#2

PDF Compressor : Compress PDF by Vishalbhai Vaghasiya

Compress PDF - PDF Compressor
Strong Contender
🔧 Utilities
4.7😞(650 ratings)
FreeAds
PDF Compressor : Compress PDF screenshot 1
PDF Compressor : Compress PDF screenshot 2
PDF Compressor : Compress PDF screenshot 3

Reduce the size of your PDF documents with this easy-to-use tool. Select your file, choose the desired output quality, and compress your PDFs with a single tap. Save disk space and speed up uploads and downloads.

What We Love

  • 🚀 Fast and efficient compression
  • 👍 Simple and easy-to-use interface
  • 💰 Free to download and use
  • ✅ Effective file size reduction

Room to Improve

  • 📢 Excessive and intrusive advertisements
  • 🐛 Frequent app crashes and glitches
  • ❌ File compression increases size instead of reducing it
PDF it All Document Converter#3

PDF it All Document Converter by DIGISET LLC

Compress PDF Photos,Files,Word
Worth Considering
📊 Productivity
4.8😊(7.9K ratings)
FreeIn-App Purchases
PDF it All Document Converter screenshot 1
PDF it All Document Converter screenshot 2
PDF it All Document Converter screenshot 3
PDF it All Document Converter screenshot 4
PDF it All Document Converter screenshot 5
PDF it All Document Converter screenshot 6

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to compress, convert, edit, merge, split, sign, and protect PDF files. All operations are performed locally on the device for enhanced security.

What We Love

  • 🚀 Fast and efficient
  • 👍 User-friendly and easy to use
  • 💡 Versatile and feature-rich
  • 🥰 Loyal and reliable companion

Room to Improve

  • 🐛 Crashes and compatibility issues with newer iOS versions
  • 💰 Subscription model not well-received
  • 🔍 Lack of search functionality

More PDF Compression apps to explore

4
iLovePDF - PDF Editor & Scan
iLovePDF - PDF Editor & Scan
iLovePDF - PDF Editor & Scan
For Work, Study & E-Signing
Free

Edit, convert, annotate, and sign PDF documents on the go. This app offers tools to scan, merge, split, compress, and protect your files, enhancing productivity for work and study.

Scan documents to PDFConvert JPG/Office to PDFEdit and annotate PDFs
📊 Productivity
(50K)
freemium
5
PDF Compression
PDF Compression
PDF Compression
Compress PDF files quickly
Free

Easily reduce the size of your PDF files without sacrificing quality. This tool is perfect for students and professionals needing to optimize documents for storage, email, or sharing. Compress multiple files quickly and efficiently.

Compress PDFs for freeReduce file size to specific megabytesOptimize documents for email and sharing
📊 Productivity
(5)
free with in-app purchases
6
PDF Editor ®
PDF Editor ®
PDF Editor ®
Edit, Reader Converter Maker 7
Free

Edit, sign, and convert PDF documents directly from your mobile device. Scan physical papers into editable PDFs, annotate text, and fill out forms on the go. All your documents are stored locally for privacy and can be easily shared.

Edit PDF filesSign documentsConvert scanned papers to PDF
💼 Business
(28K)
free with in-app purchases
7
Smallpdf: Scanner & PDF Editor
Smallpdf: Scanner & PDF Editor
Smallpdf: Scanner & PDF Editor
compress, convert, ocr, sign
Free

This app offers a comprehensive suite of tools to manage PDF documents. Easily convert, edit, compress, sign, merge, and scan PDFs using your mobile device. It also features OCR technology to convert scanned documents into editable text.

Convert PDFs to Word, Excel, PPT, JPG, PNGEdit PDFs with text, images, and annotationsCompress PDFs to reduce file size
📊 Productivity
(6.8K)
free with in-app purchases
8
PDF Squeezer
PDF Squeezer
PDF Squeezer
Compress PDFs Offline
Free

Reduce PDF file sizes on your iPhone or iPad with customizable compression settings. Preview changes before saving and process files securely offline. Automate tasks with iOS Shortcuts integration and compress multiple files at once.

Customizable compression settingsPreview compressed PDFsOffline, on-device processing
📊 Productivity
(21)
free with in-app purchases
9
PDF Compressor－Compress PDF
PDF Compressor－Compress PDF
PDF Compressor－Compress PDF
Reduce PDF Size & Keep Quality
Free

Easily reduce the size of your PDF files without sacrificing quality. This tool helps you shrink PDFs for faster sharing, emailing, or uploading, saving valuable storage space. It's perfect for managing large documents and scanned files efficiently.

Compress PDF files without losing claritySmart compressor for scanned or large documentsReduce PDF size for easy upload and sharing
📊 Productivity
(126)
free with in-app purchases
10
Tiny PDF - File Compression
Tiny PDF - File Compression
Tiny PDF - File Compression
Reduce PDF File Size For Email
Free

Easily reduce the size of your PDF files in seconds without compromising visual quality. Ideal for sending documents via email, uploading to websites, or saving device storage. Offers a clean interface for quick compression and sharing.

Compress large PDFsMaintain high visual qualityEasy email sharing
🔧 Utilities
(4)
subscription
11
PDF Reader - Editor & Viewer
PDF Reader - Editor & Viewer
PDF Reader - Editor & Viewer
Editor, Converter, OCR
Free

Edit, convert, and manage PDF documents on your mobile device. This app allows you to directly edit text, scan documents, fill out forms, and secure your files with passwords and watermarks. It also supports OCR to extract text from scans and convert PDFs to various formats.

Edit PDF text directlyConvert PDF to Word, Excel, PPT, imagesOCR for text extraction from scans
🔧 Utilities
(2.9K)
freemium
12
PDF Converter - Word to PDF
PDF Converter - Word to PDF
PDF Converter - Word to PDF
Photo to PDF maker & Scan doc
Free

Easily convert documents to and from PDF format in just three steps. Create PDFs from images, share converted files, and manage your conversion history. Supports a wide range of input and output file types.

Convert documents to PDFCreate PDF from imagesSupports numerous file formats
📊 Productivity
(32K)
free with in-app purchases
13
PDF Hero - PDF Editor & Reader
PDF Hero - PDF Editor & Reader
PDF Hero - PDF Editor & Reader
Create & Edit PDF Documents
Free

Edit, create, and manage PDF documents on your mobile device. Annotate, fill forms, sign, and share files with ease. Offers advanced features like OCR and compression for enhanced document control.

Create PDFs from scratchEdit text and annotate documentsFill and sign PDF forms
💼 Business
(10K)
free with in-app purchases
14
PDF Compressor - Compress PDF
PDF Compressor - Compress PDF
PDF Compressor - Compress PDF
Compress PDF - PDF Compressor
Free

Reduce the size of your PDF files to save storage space and speed up uploads and downloads. This app allows you to compress PDFs with a single tap, making them easier to manage and share.

Compress PDF file size easilyReduce PDF size within secondsSmart and easy to use interface
🔧 Utilities
(523)
free with in-app purchases
15
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
Scan, fill, sign,make pdf docs
Free

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

Edit PDF documentsEsign and fill out formsShare and collaborate on documents
💼 Business
(7.6K)
free with in-app purchases
16
PDF Reader – PDFelement
PDF Reader – PDFelement
PDF Reader – PDFelement
PDF Editor & Viewer, PDF Maker
Free

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

Liquid Mode for optimized mobile readingAnnotation tools (pencil, text, highlighting)Handwritten signature insertion
📊 Productivity
(3.9K)
free
17
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
Edit,read,sign,annotate pdf
Free

This application offers comprehensive PDF management, including advanced editing, AI-powered summarization and translation, and efficient scanning with OCR. It helps organize, convert, and secure documents for work, study, and personal use.

AI Chat with PDFScan and OCRPDF to Office Conversion
📊 Productivity
(7.5K)
free with in-app purchases
18
PDF Photos
PDF Photos
PDF Photos
Picture to PDF Converter
Free

Easily convert your photos into professional-looking PDFs. Customize layouts, add branding elements like headers and footers, and control file size for efficient sharing. Save and share your documents across various cloud services or directly via email and printing.

Convert photos to PDFCustomizable photo layoutsAdd cover pages, headers, and footers
💼 Business
(14K)
free with in-app purchases
19
Power PDF - PDF Manager
Power PDF - PDF Manager
Power PDF - PDF Manager
Create, Modify, Secure PDF
Free

Create, modify, and secure PDF documents on your mobile device. Convert various file types and photos to PDF, scan documents with your camera, and manage files with a built-in file manager. View, annotate, and search within PDF documents with ease.

Create PDFs from DOC, XLS, PPT, TXT, and photosScan to PDF using cameraCombine, split, delete, and reorder PDF pages
🔧 Utilities
(1K)
free with in-app purchases
20
Smart PDF
Smart PDF
Smart PDF
by ORBITAL TECH PTE. LTD.
Free

Easily manage and process PDF files with this powerful tool. Convert PDFs to images, create PDFs from images, and merge multiple documents seamlessly. Streamline your workflow and enhance productivity with its intuitive interface.

Convert PDFs to imagesTransform images into PDFsMerge multiple PDF files
🔧 Utilities
(784)
free