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UPDF + UPDF AI | AI-powered PDF Reader

Read PDFin a Renewed Experience

Open and read PDF comfortably with different settings, take notes with annotations tools, and improve reading efficiency with AI.
All can be done with UPDF on desktop and mobile.

Free Download

Support: Windows · macOS · iOS · Android

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Read PDF Faster Than Ever, AI-Accelerated

Accelerate your PDF reading pace by grasping a book summary using UPDF AI, and accessing all-inclusive reading tools, bookmarks, thumbnails, search, etc.

Read PDF Deeper, Gain Valuable Insights

Unlock a world of knowledge by effortlessly looking up word definitions, explaining complex terms, and translating foreign languages with UPDF AI.

Read PDF with Pleasure, All Tools in One App

One App, Limitless Possibilities. Markup, edit, change the background of PDF eBooks, and more within a single platform.

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AI Summarize PDF

UPDF AI can be your Intelligent PDF assistant to extract key insights and let you engage with your PDF.

What is UPDF AI

PDF Bookmarks

Navigate pages through the bookmarks swiftly.

Search in PDF

Find specific words and phrases in the PDF eBooks.

Go Back and Forth

Quickly return to a specific page with one-click.

AI Explain PDF

Elucidate complex terms from the PDF book with UPDF AI instantly.

How to explain a PDF

Lookup Definition

Look up the definition and meaning of words in PDF while you are reading PDF.

AI Translate PDF

Translate foreign PDF books with AI for a broader range of reading opportunities.

How to translate a PDF

Annotate PDF

Create dynamic annotations as you view the PDF.

How to annotate a PDF

Edit PDF

Correct typos, edit images, and make the eBook perfect!

How to edit a PDF

Various Display Modes

Multiple display modes to personalize your reading experiences.

How to read a PDF

Change PDF Background

Relieve eye strain by changing the background color of the PDF document.

How to edit background
UPDF PDF viewer best PDF viewer

Read PDF on the Go

Immerse yourself in knowledge, wherever you are, with the UPDF mobile app at your disposal.

UPDF for iOS UPDF for Android
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More Features Than Open and Read PDF

UPDF AI

AI AssistantHOT

Summarize, translate, and chat with PDF.
edit pdf

Edit PDF

Edit PDF images, texts, links, and more
read pdf

Read PDF

Immerse in seamless PDF reading.
Cloud pdf

UPDF Cloud

Access documents across different devices.
annotate pdf

Annotate PDF

Enhance PDF collaboration with annotation.
convert pdf

Convert PDF

Transform PDF to/from diverse formats.

Ocr pdf

OCR PDF

Make scanned PDFs searchable and editable.
organize pdf

Organize PDF

Simplify PDF page organization.
Batch pdf

Batch PDF

Batch convert, combine, insert, encrypt and more.
Password pdf

Protect PDF

Safeguard your PDFs from unauthorized access.
Compress pdf

Compress PDF

Reduce PDF file size to perfection.
Forms pdf

Fill and Sign

Seamlessly create, fill, and sign PDF forms.

Products and Plans

Individual Enterprise
UPDF Pro

/ Year

Access to all PDF tools for editing, coverting, annotating PDFs.

Buy Now Free trial
AI Assistant

/ Year

Unlimited usage of AI to summarize, translate, convert PDF to mind maps etc.

Buy Now Free trial
UPDF Sign

/ Year

300 signature requests per year.

Buy Now Free trial
UPDF Pro

/ one-time fee

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Access to all PDF tools for editing, coverting, annotating PDFs.

Buy Now Free trial
AI Assistant

/ Year

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Unlimited usage of AI to summarize, translate, convert PDF to mind maps etc.

Buy Now Free trial
UPDF Sign

/ Year

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unlimited signature requests per year.

Buy Now Free trial
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*The pricing and available features are based on the specific plans you decide on.

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