ClaroPDF is a professional and user-friendly PDF viewer, reader and annotator. Annotate, mark up and save PDF files which are then still fully compatible with Adobe Reader and other popular PDF apps.

+ Annotations, Notes and Comments
ClaroPDF includes a powerful Annotation toolbar that lets you add notes and other comments. These are fully interchangeable with Adobe Reader and most other popular PDF apps, so your ClaroPDF comments will still be there if you open the PDF on another device. Annotations created in another PDF app can also be viewed and edited.

Annotation features include: highlight; underscore; strikeout; notes; free text (type straight into the PDF); free line draw (with many colors, opacity and thickness control); shapes (circle, square, line - with many colors, opacity and thickness control); images (you can even insert photos from your iPad camera or photo library into the PDF file)

+ Speech, Productivity and Accessibility
ClaroPDF has access to the full range of iOS system voices and a range of synchronized colour highlighting options. A ‘Speak in Background’ option lets you listen to a PDF while viewing another app - great for proofreading accessible text PDF files while you’re working in other apps. The ‘Speak on tap’ (either from the tapped sentence or the page’s first sentence) and ‘Stop on tap’ options make speech easy to control.

ClaroPDF allows the background color of the PDF to be changed, to enhance readability. ClaroPDF fully supports VoiceOver. Image PDF files cannot be spoken by ClaroPDF, but can still be fully viewed and annotated.

+ Smart Zoom
On double-tap, ClaroPDF will identify the tapped text block and perform an intelligent zoom on it, just like in Safari. This reduces how much you have to adjust the zoom manually.

+ Full-Text Search & Navigation
Search will highlight all found results in your document and let you jump to each one in turn. ClaroPDF shows each page of a multi-page PDF document as a thumbnail, allowing for faster scrolling of long documents. The thumbnails automatically hide when not needed.

+ Managing PDF Files
PDF files can be opened in ClaroPDF from all other apps, including Mail and Safari. All opened PDF files will be placed in the ClaroPDF Documents List for later viewing. You can also open files from Dropbox, Google Drive, or import files via iTunes. PDF files can be saved into ClaroPDF’s Documents, Dropbox or Google Drive, sent by email, or opened in other apps that support PDF files. ClaroPDF offers the option to email or forward the PDF in a 'flattened format' with annotations made permanent, or send the whole file with editable annotations for further review by others.

+ Fullscreen mode
Allows the full document to be seen without toolbars in view. Ideal for smaller screens!

+ Accessibility
ClaroPDF allows the background color of the PDF to be changed, to enhance readability. ClaroPDF also fully supports iOS VoiceOver.

+ ClaroPDF vs ClaroPDF Pro
ClaroPDF includes many great features, however, here is a list of what’s only included in ClaroPDF Pro:
* 4 Nuance Vocalizer text-to-speech voices included as standard.
* Multimedia: add audio and video files to pages of your PDF file.
* Folder customisation in the PDF documents list: allows you to organize all your PDFs into different folders.
* Sync with iCloud: sync your PDF files between devices.
* Save as PDF app extension: convert text, images and web pages to PDF files from other apps such as Safari. Great for keeping a PDF record of that order confirmation web page!
* In-app purchases to add more Vocalizer voices and OCR credits.

Need help with ClaroPDF or have any suggestions? Please email

Like ClaroPDF? Please leave a review and check out ClaroPDF Pro!

What’s New

Version 5.0.8

Fixes an issue with the "simplify conversions" setting not working correctly.

Ratings and Reviews

4.7 out of 5
49 Ratings

49 Ratings

sisi92814 ,

Does what it says

I was kind of skeptical about this app at first because it has a little bit of reviews. But i though eh its free why not. The app annotates, draws, highlights, its easily navigated. You can insert pictures, leave book marks. The only thing i havent figured out is how to save the file into the actual app. My pdf book is in a tab and if i push the little “x” on left hand side, i think itll erase all my annotations. Other than that its good.

Developer Response ,


Thank you for taking the time to leave feedback for our ClaroPDF app. To answer your questions: you can save the file in to the app by tapping Save > Save as... If you tap the little X in the PDF tab, it will only close the PDF. It will not remove your PDF or any of your annotations; these will be saved automatically.

If you would like any more help please get in touch at and we'll be very happy to assist.

iCaliT ,


I love this app! It's the only one that does what the developer says it does. I have a lot of lengthy PDF documents to read and the only way I can get through them is to have them read to me. I had no idea that some PDFs were actually pictures and needed to be converted to text. The app converted my PDFs flawlessly and it is a great reader too. The interface is clean and easy to use.

Thank you to the developer/s!

Developer Response ,


Thanks for leaving such kind feedback; we appreciate your comments and hope you continue to use our apps in the future.

Suki&tinka ,


I deal with a lot of contracts that are sent to me via PDF files and I have to admit that this program has met all my expectations and it is an absolute delight to work, very easy, and I have never had any issues with using this program.

Developer Response ,

Thank you for leaving feedback on our ClaroPDF app. We hope it still continues to be of use to you!

App Privacy

The developer, Claro Software Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • User Content

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You Might Also Like