ClaroPDF is an accessible, professional and user-friendly PDF Viewer, Reader and Annotator for iPad, iPhone and iPod Touch.
View text PDF files and listen to them with a human-quality voice and synchronised highlighting. Annotate and mark up text or image PDF files.

ClaroPDF is designed as an accessible productivity, reading and study PDF tool for all.

Speech, Productivity And Accessibility

To support accessibility and productivity, ClaroPDF features built in human quality text-to-speech English voices with a range of synchronised coloured highlighting options. A Speak in Background option lets you listen to a PDF while viewing another app – great for proofreading accessible text PDF files, listening to content whilst working in other apps, or even listening via Bluetooth speakers. The speaking rate can be up to 360 words per minute, and the Speak on Tap option makes speech easy to use. Over 40 additional voices are available in 27 different languages (full list on website) through low cost In App purchase, so you can easily customise ClaroPDF speech to suit your preference and languages. The voices are all built into the app so an Internet connection is NOT needed to speak text.

ClaroPDF allows the background colour of the PDF to be changed, to enhance readability. ClaroPDF also fully supports iOS VoiceOver. PDF image files cannot be spoken by ClaroPDF voices, but can be fully viewed and annotated with ClaroPDF.

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 programs, so your ClaroPDF comments will still be there if you open the PDF on another computer. Annotations created in another program 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 colours, opacity and thickness control)
  • Shapes (Circle, Square, Line – with many colours, opacity and thickness control)
  • Images (insert Photos from your iPad Camera or Photo Library into the PDF file)

Smart Zoom

On double-tap, ClaroPDF will identify the tapped text block and perform an intelligent zoom on it, just as you’re used to in Safari. This reduces how much you have to adjust the zoom manually. The autoscroll option moves the text up the page automatically.
Full-Text Search And Navigation

Search will search across your whole document, highlight all found results, and let you jump straight to each one in turn. ClaroPDF shows each page of a multi-page PDF document as a Thumbnail, allowing for fast scrolling of long documents. The Thumbnails auto hide when not needed.

Managing PDF Files

PDF files can be opened in ClaroPDF from all other apps, including PDF email attachments or PDFs found in web pages. All opened PDF files will be placed in the ClaroPDF Gallery for later viewing. You can also open files from DropBox, or import PDF files via iTunes. PDF files can be Saved into the Gallery, back into DropBox, sent by e-mail, or opened in other apps supporting the PDF file format. 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.

ClaroRead Compatibility

ClaroRead Pro and Plus for Windows can scan paper into accessible PDF files, retaining the original page image. These PDF files can be opened and spoken in ClaroPDF.

More Information

To find out more about our apps go to the Claro-Apps Web Page

For more information about the rest of Claro Software’s range of apps, go to, email or call +44 (0)1772 977888.