PDFOptim PDFOptim $2.99


Compress & Optimize PDF files

3.1 for iPhone, iPad

64 Ratings

Update Date



6.7 MB

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PDFOptim Description
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 heavy PDF files. Inbuilt side-by-side preview to compare original and optimized 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. The PDFOptim gives you access to compression options to help you to reduce PDF file size without compromising the document's integrity. PDFOptim rewrites the entire PDF documents using selected compression options as efficiently as possible. Some PDF documents might not get compressed, because the PDF documents might be already compressed or have nothing much to compress.

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.


- PDF optimization options to set from Image Color Model, Image Resolution and JPEG Image Quality.

- Image color model to choose from RGB, Gray and Mono. Selecting Monochrome color model compression 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. Optimizing PDF using Monochrome color model can create 24 times smaller PDF compared to RGB color model compression.

- 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 optimized PDF size and viewing quality.

- Password protected PDF documents supported for optimization using correct password.

- Optimized single or multiple PDFs can be shared as single ZIP (*.zip) file.

- Allows Optimized 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 optimized PDFs on your desktop computer.

- Real time side-by-side preview of original and optimized PDF. It helps you to compare optimized PDF integrity and quality side-by-side. Synchronized scrolling and zooming controls for both preview showing file size and reduced percentage information.


- 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.

- Built in search feature to find a character, word or sentence any where in the PDF document.

- Scroll through your document by thumbnail view or Go to page feature.

Note: PDFOptim is standalone application running natively to optimize PDF documents securely on your iOS device.

You can refer User Manual for any assistance Or Contact Support.
PDFOptim 3.1 Update
2020-01-28 Version History
- Replaced document interaction view with iOS Files browser view for importing PDF files into the app.
- Fixed app crash when compressing file having some non-english characters in filename.
- Addressed file specific crash while creating thumbnail for new file.
- Bug fix related to deleting PDF file.
- Other improvements. Thank you all users for your feedback :)

What's New in This Version v3.0

- Whole new user interface with iOS 13 System Dark appearance compatibility.
- New icon.
- New faster and improved PDF viewer with thumbnail view. Slide finger over thumbnails to navigate through pages.
- Side-by-side comparison of original and optimised PDF is now available in iPhone app too.
- Many improvements in compression processing. Faster and more powerful optimization.
- Other bug fixes.
More Information
6.7 MB
Update Date:
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