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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.

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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.

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.

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.

Annotate PDF

Create dynamic annotations as you view the PDF.

Edit PDF

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

Various Display Modes

Multiple display modes to personalize your reading experiences.

Change PDF Background

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

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.

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More Features Than Open and Read PDF

UPDF AI

AI AssistantHOT

Summarize, translate, and chat with PDF.

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Edit PDF

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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.

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Convert PDF

Transform PDF to/from diverse formats.

Ocr pdf

OCR PDF

Make scanned PDFs searchable and editable.

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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.

Choose UPDF for simplifying PDF editing today.

UPDF
Free

Free


    Free trial of UPDF:

  • Free trial, no credit card required

  • Convert up to twice per day.

  • View PDFs

  • Slideshow PDFs

  • 2 GB UPDF Cloud Storage

  • Free try all features with trial watermarks


    Free trial of AI:

  • AI summarize, analyse or translate 3 PDFs

  • Upload up to 100 pages per file to AI

  • Ask up to 30 questions

  • Powered by GPT-4

UPDF Pro

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Buy Now More Plans

    Unlock all features in UPDF(excluding AI) across Windows, macOS, iOS and Android, including:

  • Edit PDF

  • Convert PDF

  • Annotate PDF

  • Protect PDF

  • Fill and Sign PDF

  • Batch Process PDF

  • OCR

  • 2 GB UPDF Cloud Storage


    Free trial of AI:

  • AI summarize, analyse or translate 3 PDFs

  • Upload up to 100 pages per file to AI

  • Ask up to 30 questions

  • Powered by GPT-4

UPDF Pro+ AIHOT

/ UPDF Pro (Yearly)
+ AI (Yearly)

Buy Now More Plans

    Unlock all features in UPDF(including AI) across Windows, macOS, iOS and Android, including:

  • Edit PDF

  • Convert PDF

  • Annotate PDF

  • Protect PDF

  • Fill and Sign PDF

  • Batch Process PDF

  • OCR

  • 10 GB UPDF Cloud Storage


    Unlimited use of AI features:

  • Summarize, translate, and ask PDF

  • Analyze unlimited files

  • Get answers to unlimited questions

  • 100GB cloud storage

  • Powered by GPT-4

AI benefits in one account can be shared across Windows, Mac, iOS, Android, and AI Assistant Online.

UPDF Pro (Perpetual Plan)HOT

/ user

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  • Enterprise license management dashboard

  • 24*6 phone or online meeting technical support

  • Unlock all features in UPDF(excluding AI) across Windows, macOS, iOS and Android, including:

  • Edit PDF

  • Convert PDF

  • Annotate PDF

  • Protect PDF

  • Fill and Sign PDF

  • Batch Process PDF

  • OCR

  • 20 GB UPDF Cloud Storage

UPDF Pro

From From

Buy Now

    Unlock all features in UPDF(excluding AI) across Windows, macOS, iOS and Android, including:

  • Edit PDF

  • Convert PDF

  • Annotate PDF

  • Protect PDF

  • Fill and Sign PDF

  • Batch Process PDF

  • OCR

  • 10 GB UPDF Cloud Storage


    Free trial of AI:

  • AI summarize, analyse or translate 3 PDFs

  • Upload up to 100 pages per file to AI

  • Ask up to 30 questions

  • Powered by GPT-4

UPDF Pro + UPDF AIHOT

From From

Buy Now

    Unlock all features in UPDF(including AI) across Windows, macOS, iOS and Android, including:

  • Edit PDF

  • Convert PDF

  • Annotate PDF

  • Protect PDF

  • Fill and Sign PDF

  • Batch Process PDF

  • OCR

  • 10 GB UPDF Cloud Storage


    Full access to AI Assistant:

  • AI summarize, analyse or translate unlimited PDFs

  • Upload up to 1000 pages per file to AI

  • Ask questions or chat with AI

  • Get up to 100 GB extra cloud storage

  • Powered by GPT-4

AI benefits in one account can be shared across Windows, Mac, iOS, Android, and AI Assistant Online.

*The pricing and available features are based on the specific plans you decide on.

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