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Best PDF File Compressor Apps

236+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated June 2026

Acrobat Reader is the household name in pdf file compressor, but it's far from the only option. We track 236+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for PDF File Compressor

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 it All Document Converter#2

PDF it All Document Converter by DIGISET LLC

Compress PDF Photos,Files,Word
Strong Contender
📊 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
PDF Compressor : Compress PDF#3

PDF Compressor : Compress PDF by Vishalbhai Vaghasiya

Compress PDF - PDF Compressor
Worth Considering
🔧 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

More PDF File Compressor 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 compressor & compress pdf
pdf compressor & compress pdf
pdf compressor & compress pdf
Offline compress PDF documents
Free

Shrink PDF files quickly and easily without an internet connection. Free up storage space on your device and share documents more efficiently. Offers various compression levels and additional PDF management tools.

Offline PDF compressionAdjustable compression qualityBulk PDF compression
💼 Business
(147)
free with in-app purchases
6
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
7
PDF Compressor - Reduce Size
PDF Compressor - Reduce Size
PDF Compressor - Reduce Size
compress & make PDF smaller
Free

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.

Efficient PDF compressionRetain document qualityUser-friendly file management
🔧 Utilities
(80)
free with in-app purchases
8
Unzip - zip,rar,7z file opener
Unzip - zip,rar,7z file opener
Unzip - zip,rar,7z file opener
files extractor, compressor
Free

This app is a powerful tool for extracting and compressing various archive file formats. It supports creating encrypted ZIP files, batch compression of media, and offers multiple file transfer options. It also allows viewing and playing a wide range of document, video, and audio types.

Extracts ZIP, RAR, 7Z, TAR, GZIP, and moreCreates encrypted and password-protected ZIP filesBatch compress photos and videos
📊 Productivity
(53K)
free with in-app purchases
9
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
10
Adobe Scan: PDF & OCR Scanner
Adobe Scan: PDF & OCR Scanner
Adobe Scan: PDF & OCR Scanner
Mobile Docs & Photo Converter
Free

Transform your mobile device into a powerful document scanner. Easily convert paper documents, receipts, and IDs into professional-looking PDFs or JPEGs. Enhance scans with automatic straightening, stain removal, and editable text conversion.

High-speed bulk scanningConvert paper to PDF/JPEGAutomatic straightening
💼 Business
(1.6M)
free with in-app purchases
11
Compress PDF File - Shrinkr
Compress PDF File - Shrinkr
Compress PDF File - Shrinkr
#1 PDF Compressor, Reduce Size
Free
🔧 Utilities
(0)
12
PDF Compressor: Size Reduce
PDF Compressor: Size Reduce
PDF Compressor: Size Reduce
PDF Compress & Reduce Size
Free

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.

Compress PDF filesOCR and Text RecognitionMerge and split PDFs
🔧 Utilities
(54)
free with in-app purchases
13
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
14
PDF Converter: PDF Compressor
PDF Converter: PDF Compressor
PDF Converter: PDF Compressor
Sign PDF Doc Document to Photo
Free

This app transforms your device into a digital document hub, converting various file types to high-quality PDFs. It offers comprehensive organization, editing, and security features, simplifying document handling for all users.

Convert photos and documents to PDFEdit PDFs with annotations and textMerge, split, and compress PDFs
🔧 Utilities
(1)
free with in-app purchases
15
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
16
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
17
Docs PDF Opener Zip Files compress & unzip Rar new
Docs PDF Opener Zip Files compress & unzip Rar new
Docs PDF Opener Zip Files compress & unzip Rar new
Open and Read Many file Types
Free

This app allows you to open, read, and manage various file types, including PDFs, office documents, images, and videos. It also supports downloading videos from the web, converting documents to PDF, merging PDFs, and transferring files via Wi-Fi or cloud services.

Read PDF, EPUB, DOC, XLS, PPT, TXT filesView images and videosDownload videos from the web
📊 Productivity
(172)
free with in-app purchases
18
PDF Compressor - PDFpress
PDF Compressor - PDFpress
PDF Compressor - PDFpress
Compress PDFs File Size
Free

Easily reduce the size of PDF files without sacrificing quality. Organize documents with folders and import PDFs instantly. Ideal for students, professionals, and anyone needing to manage digital documents efficiently.

Ultra-efficient PDF compression (up to 98%)High-quality outputSimple file picker
📊 Productivity
(4)
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
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