# PDFOptim — Compress & Optimize PDF files > Compress, optimize, and reduce PDF file sizes on iOS devices. (iPhone/iPad app by RootRise Technologies Pvt. Ltd..) - Source: https://appshunter.io/ios/app/pdfoptim/id903356489 (this page in markdown: same URL + `.md`) - Developer: [RootRise Technologies Pvt. Ltd.](https://appshunter.io/developer/594431033) - Category: Productivity, Business - Price: Free with in-app purchases - Rating: 4.70/5 from 292 App Store ratings · 82 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 8 MB - Languages: American English - Released: 2014-08-18 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/pdfoptim/id903356489/reviews.md ## What is PDFOptim? PDFOptim is a simple and intuitive way to compress, optimize and reduce PDF documents on iPhones and iPads. PDFOptim provides easy and effective ways to compress large image and graphics heavy PDF files. Inbuilt side-by-side preview to compare original and compressed PDF. * * * PDFOptim for Mac is also available on the Mac App Store. * * * Compressed PDF documents requires less disk space for storage and faster uploads and downloads saves transmission time and cost. PDFOptim rewrites the entire PDF documents using selected compression options as efficiently as possible without compromising the document's integrity. If your PDF documents are in another app (For Example Mail, DropBox or SkyDrive etc.) that uses the Open In… button, tap the button to open the PDF document in PDFOptim. You can also transfer PDF documents from your desktop computer via iTunes into PDFOptim application on your iPhone or iPad. KEY FEATURES: AUTO COMPRESSION MODE - PDFOptim analyze document’s contents and apply algorithm to generate a smallest possible PDF by maintaining the document’s visual quality. Choose one of the four predefined Auto compression methods and let the app do the hard work for you. No further user interaction required to provide technical compression options. MANUAL COMPRESSION MODE - Change compression options manually to generate optimum sized PDF of your need. You can choose compression options to set from Image Color Model, Image Resolution, JPEG Image Quality, Optimise vector graphics level and Advance option. - Image color model to choose from RGB, Gray and Mono. Selecting Monochrome color model option converts raster PDF contents into black and white which helps reduces PDF file size to greater extent. It is very helpful when compressing scanned books mainly containing text. - Image resolution ppi (pixels/inch) control to resize raster image contents. Downsampling at lower resolution decrease the file size dramatically. - Quality control. Set quality from lossless to least for resampling all raster images into PDF. It allows you to control compressed PDF size and viewing quality. -Advance options to remove PDF content properties like alternate images, page thumbnails, documents structure hierarchy and output intent. - Optimize vector graphics option removes superfluous information to reduce vector graphics heavy PDF. Increase in optimize vector from 'Level 1' to 'Level 5' reduces output PDF file size less to more respectively. This option is very useful when PDF content mainly consist of high precision vector graphics, Usually PDF drawing, note-taking and PDF markup apps creates large vector graphics heavy PDF files which can be compressed by this option efficiently. - Password protected PDF documents supported for compression using correct password. - Single or multiple compressed PDFs can be shared as single ZIP (*.zip) file. - Allows Compressed PDFs to Open In… another application, Mail, Message, Print, share PDFs to nearby iOS devices via AirDrop. - Use Copy to iTunes to save and share compressed PDFs on your desktop computer. PDF VIEWER: - Inbuilt PDF viewer with fully selectable and searchable text contents. Select and copy text to clipboard for further use. - Pinch out and Pinch in to ZoomIn and ZoomOut view and search feature to find a character, word and sentence. - Scroll through your document by thumbnail view or Go to page feature. Note: PDFOptim is standalone application running natively to compress PDF documents securely on your iOS device. You can refer User Manual for any assistance Or Contact Support. *The free version has limitation to export one compressed PDF per week. Get Premium to remove all restrictions and start exporting an unlimited number of compressed PDFs. Privacy Policy: http://rootrisetech.com/pdfoptim-privacy-policy Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Compress PDF documents - Optimize PDF files - Automatic compression mode - Manual compression mode - Adjust image resolution and quality - Optimize vector graphics - Support for password-protected PDFs ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium : Yearly Access | $2.99 | per year | | Premium : Monthly Access | $0.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Premium : Lifetime Access | $4.99 | one-time | ## What do users think of PDFOptim? Overall sentiment: mixed **Pros** - 👍 Excellent compression quality - 🚀 Efficient and fast performance - 👍 Simple and easy to use - 💰 Good value for money (one-time purchase) - 👍 No annoying subscriptions - 👍 Preserves good quality - 👍 Useful for emailing large files - 👍 Side-by-side comparison feature - 👍 Works well on iPad - 👍 Affordable one-time purchase - 👍 Integrates with other apps - 👍 No BS fees **Cons** - 🐛 App not launching/freezing - 🐛 Doesn't work for certain file types (e.g., GoodNotes) - 🐛 Poor image quality/pixelation - 🐛 Compression not effective on all PDFs - 🐛 Confusing or illogical interface - 🐛 Issues with making purchases - 🐛 Needs updating for latest OS versions - 🐛 Can be pricey for single-purpose utility - 🐛 Does not support iOS shortcuts - 🐛 Requires separate purchase for macOS **Commonly reported bugs** - App not launching on iOS 18.0.1 - App freezes during launch - App won't take purchases - Cannot optimize certain PDFs - Compression not effective on marked-up PDFs - App no longer works after updates - File compressed to a slightly smaller size with no significant reduction - Graphics become unreadable or highly degraded - App crashes - Multitasking, drag and drop not working - Doesn't use full screen on new iPads **Most requested features** - Support for iOS shortcuts - macOS version integration/cross-platform compatibility - Improved handling of specific file types like GoodNotes - Better optimization for handwritten notes within PDFs - Cloud storage for compressed documents (iCloud) - Update for latest OS versions and multitasking features ## Recent user reviews (10 of 82) All indexed reviews: https://appshunter.io/ios/app/pdfoptim/id903356489/reviews.md ### 5/5 — The best app for shinking size *2026-03-21* Works perfectky. No BS fees. ### 5/5 — A great and very useful app *2026-03-03* Love it. Been using for years and it’s saved my skin a good few times to optimized large artwork PDFs for review to make them easy to email and still good quality. Good job! ### 5/5 — Perfect *2026-02-03* Functions really well. Compresses better than any software I’ve used. ### 5/5 — Nice and simple *2026-01-19* This app has stood the test of time. It is easy to use, does what I want, and integrates with other apps I use. ### 1/5 — Can't make the full time purchase!!!! *2026-01-14* I'm honestly sooo sooo Anoyed! Despite the positive reviews of the app there's an issue on your side app won't take purchaces! ### 2/5 — Need more improvement *2025-11-25* Needs more improvement as like manual mode high quality with own minimum size edits ### 5/5 — Superbe application *2025-10-17* Merci au développeur de nous offrir une application peu cher et de qualité. ### 5/5 — Mega! *2025-06-14* Danke an die Developer!! ### 3/5 — Confusing interface *2025-01-07* Sadly this isn't for me. The interface is clunky and illogical and like so many apps, seems to have its on take on how the iOS file system works. I'll be asking for my money back. Such a shame as it seemed so promising. The actual compression is pretty good. ### 2/5 — App not launching on iOS 18.0.1 *2024-10-13* Dear developers, PDFOptim has stopped launching on iOS 18.0.1. The app simple freezes during launch and does not respond to any activity. Pls check and fix this issue. ## Frequently asked questions about PDFOptim ### What does PDFOptim do? PDFOptim is an application designed to compress, optimize, and reduce the file size of PDF documents on iPhones and iPads. It helps in saving storage space and speeding up file transfers by making PDFs smaller without compromising their integrity. ### How does PDFOptim compress PDFs? The app offers two main modes: Auto Compression, where it analyzes the document and applies an algorithm to find the smallest possible size while maintaining quality, and Manual Compression, where users can adjust specific settings like image color model, resolution, JPEG quality, and vector graphics optimization. ### Is PDFOptim free to use? The application is available for free with in-app purchases. This suggests that while basic functionality might be free, certain advanced features or unlimited usage may require a purchase. ### What devices is PDFOptim compatible with? PDFOptim is designed for iPhones and iPads. A separate version is also available for Mac computers on the Mac App Store. ### Can I compress password-protected PDFs? Yes, PDFOptim supports the compression of password-protected PDF documents, provided you have the correct password to access and process them. ## Version history (last 5 releases) ### 6.0 — 2026-01-19 - Updated user interface to streamline with latest iOS. - Other minor bug fixes and improvements. If PDFOptim useful to you, we would appreciate an App Store review. It will help other people find the app and make them delighted. Thank you all users for your feedback :) ### 5.0.1 — 2023-05-02 - [FIXED] App crash due to a framework unavailability on iOS 12. *** What's New in Version 5.0 • Introducing new Auto Compression Mode. PDFOptim analyze document’s contents and apply algorithm to generate a smallest possible PDF by maintaining the document’s visual quality. Choose one of the four predefined Auto compression methods and let the app do the hard work for you. No further user interaction required to provide technical compression options. • Refined icon. • New advance options to remove PDF content properties like alternate images, page thumbnails, documents structure hierarchy and output intent. • Other minor bug fixes and improvements. If PDFOptim is useful to you, we would appreciate an App Store review. It will help other people find the app and make them delighted. ### 5.0 — 2023-05-02 • Introducing new Auto Compression Mode. PDFOptim analyze document’s contents and apply algorithm to generate a smallest possible PDF by maintaining the document’s visual quality. Choose one of the four predefined Auto compression methods and let the app do the hard work for you. No further user interaction required to provide technical compression options. • Refined icon. • New advance options to remove PDF content properties like alternate images, page thumbnails, documents structure hierarchy and output intent. • Other minor bug fixes and improvements. If PDFOptim is useful to you, we would appreciate an App Store review. It will help other people find the app and make them delighted. ### 4.2 — 2022-10-06 - [FIXED] Original and compressed PDF side-by-side comparison view not working after OS upgrade to new iOS 16. - [FIXED] JPX encoded images with transparency in PDF get distorted when optimised. - [FIXED] A file specific issue taking longer time to compress. - [FIXED] A file specific crash when a PDF contains JPX encoded image with YUV color model. - UI improvements and fixes to streamline with latest iOS 16. Thank you all users for your feedback :) ### 4.1.1 — 2021-08-16 - Immediate corrective update for last version app crash issue. What's New in version 4.1 - Enabled multiple PDF files selection for importing into the app. Choose to select one to more files in Browser and tap Open to import selected files. - Minor bug fixes and improvements. Thank you all users for your feedback :) ## Apps similar to PDFOptim | App | Rating | Price | Category | | --- | --- | --- | --- | | [Compress PDF reduce pdf size](https://appshunter.io/ios/app/compress-pdf-reduce-pdf-size/id6478926009) | 4.5 (25) | Free | Productivity | | [PDF Compressor－Compress PDF](https://appshunter.io/ios/app/pdf-compressorcompress-pdf/id6748140542) | 4.7 (137) | Free | Productivity | | [PDF Converter & Editor it All](https://appshunter.io/ios/app/pdf-converter-and-editor-it-all/id627640657) | 4.8 (8,060) | Free | Productivity | | [Compress PDF : Reduce PDF Size](https://appshunter.io/ios/app/compress-pdf-reduce-pdf-size/id1547749648) | 1.0 (3) | Free | Productivity | | [PDF Squeezer](https://appshunter.io/ios/app/pdf-squeezer/id6478766883) | 4.8 (22) | Free | Productivity | | [PDF Compress - Reduce PDF Size](https://appshunter.io/ios/app/pdf-compress-reduce-pdf-size/id6504757939) | — | Free | Productivity | ## More apps by RootRise Technologies Pvt. Ltd. - [XPSView](https://appshunter.io/ios/app/xpsview/id804593188) - [Winmail Reader](https://appshunter.io/ios/app/winmail-reader/id835792417) - [Winmail Reader Lite](https://appshunter.io/ios/app/winmail-reader-lite/id880620365) - [PDF to JPG - Converter](https://appshunter.io/ios/app/pdf-to-jpg-converter/id896704427) - [PDFOptim Lite](https://appshunter.io/ios/app/pdfoptim-lite/id910090368) All apps by RootRise Technologies Pvt. Ltd.: https://appshunter.io/developer/594431033 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*