CS PDF Reader - PDF Editor

In-app purchases
4.5
71.2K reviews
Content rating
Everyone
10M+
Downloads
Content rating
Everyone
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About this app

The CS PDF mobile app, powered by CamScanner, is an all-in-one PDF tool. It's a PDF reader, PDF editor, PDF converter, and PDF scanner. Easily convert PDFs to Word and other formats with this app. You can also convert images, Excel, and PPT files to PDFs for free. CS PDF is compatible with Microsoft, Google, and Adobe files.
Completely free, this PDF tool is well-designed and easy to use, perfect for working on the go, from your mobile, for online study, and for travel. Supports 10 languages.

CS, CS PDF, and CamScanner
● CS PDF and CamScanner are developed and published by CS. CS PDF is powered by CamScanner.
● CamScanner is a scanner app installed by more than 1.5 billion people around the world. You can sync files between CamScanner and CS PDF.

A brand new PDF scanner to quickly scan paper documents!
● Easily use your device's camera to scan paper documents, or import files directly from your gallery.
● Automatically remove unnecessary backgrounds and trim edges during the scan.
● High-definition scanning mode is available.

Your Pocket Folder: Not just a PDF reader, but also supports reading documents in all formats!
● Import all the PDF files on your phone to CS PDF and create folders to organize them — no more worries about losing files!
● Read PDF files online or offline, anywhere and anytime.
● Search PDF files by their content and annotate documents easily.
● Zoom in or out of PDF pages, and ensure a high-resolution PDF reading experience.
● Supports single page view and continuous scrolling reading modes.

A more convenient way to handle work files, such as contracts
● Use CamScanner to scan hard copy paper contracts and sync them to CS PDF.
● Use CS PDF to add e-signatures and adjust their size and placement.
● Merge multiple PDF contracts with just one tap.
● Highlight, underline, or strike-through text to accentuate PDF content.
● Share PDFs, Word documents, images, or other types of files via social media, emails, and other such platforms, or for printing.

The best PDF converter
● Convert image, Word, Excel, and PowerPoint files into PDF files.
● Convert PDF files into image, Word, Excel, and PowerPoint files.

We look forward to hearing from you! Contact us via cspdf@camscanner.com
Updated on
Apr 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Files and docs and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
69K reviews
AnderWriter
April 5, 2026
I admire anyone who goes to the trouble to develop an app. However, this one apparently has no settings whatsoever— including no Dark Mode, & it doesn't honor the system-wide Dark Mode you've set on your phone, either. This means glaring white 2000s-style backgrounds everywhere, like staring into a flashlight. Sorry, but that's a showstopper for me… Computing doesn't have to be this hard anymore.
12 people found this review helpful
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INTSIG PTE
April 8, 2026
Thank you for your feedback. We truly value your input and will carefully consider it as we continuously work on improving our services.
Kevin Alves
June 15, 2026
Terrible app. all it did was provide a continuous stream of ads. I couldn't even get past the ads to check out the app. what a joke.
1 person found this review helpful
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INTSIG PTE
June 18, 2026
Sorry that we have to monetize via advertising now to support our R&D. You can complete daily tasks in the app to receive a free premium to enjoy more features and less advertising. Or, you can also purchase premium to remove all ads. We will also improve our app. Thanks
Eli
May 22, 2026
not very people friendly. it won't scan unless there is a green frame around the whole document. I continuously struggle to scan a whole document
4 people found this review helpful
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INTSIG PTE
May 22, 2026
Please accept our apologies for the inconvenience caused. Could you describe the issue you met in detail and report app log to us from “CS pdf app--bottom Me--Feedback” with some screenshots for check? You can also contact us at cspdf@camscanner.com. Thanks

What’s new

Fix the issue where PDFs fail to open