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free pdf reader and annotator

Robust PDF Reader and Annotator

Effortlessly view and annotate PDF documents with an array of convenient PDF reading and markup features.

A Delightful PDF Reading Experience

view pdf

View Multiple PDFs in Tabs

UPDF allows you to open and view multiple PDF files in a tabbed format.

pay layouts

Page Layout Options

Easily adjust page views to fit your device screen.

add bookmark to pdf

Bookmark Management

Add bookmarks to navigate your PDF like a sailor!

search in pdf

Search and Find Text

Search for specific text in PDF when viewing a PDF document.

view multiple pdfs
view pdf pages
add bookmarks to pdf
search text in pdf

Annotate PDF with Ease

Add Comments to PDF

Make comments in PDF documents, highlight, underline, or strikeout text, add text boxes and sticky notes.

annotate pdf

Add Stamps and Stickers to PDF

Add up to 100+ different kinds of stamps and stickers to your PDF. You can even create a custom stamp to any section of the document.

annotate pdf

Add Signatures to PDF

Draw a handwritten signature or type-in an electronic signature. Signatures can be easily moved to any section of the document.

annotate pdf

Insert Shapes in PDF

Insert various shapes into your PDF, such as rectangles, ovals, arrows, and lines. Control the properties of these shapes by changing their style, thickness, border and fill colors, and opacity.

draw on a pdf

Other Features of UPDF

UPDF is an all-in-one PDF solution - here are some other great features:

edit pdf text

Edit Text in PDF

edit pdf image

Edit Image in PDF

manage pdf pages

Manage Pages

convert pdf

Convert PDF

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updf for macos

macOS

Supports macOS 10.14 or later

updf for windows

Windows

Supports Windows 7 or later

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updf for ios

iOS

Supports iOS 14.0 or later

updf for android

Android

Supports Android 5.0 or later