Document Genius

Trusted by individuals who need fast, easy PDF editing

Free Online PDF Reader

  • View, annotate, and work with PDFs instantly.
  • Add notes, highlights, and markups in your browser.
  • Works on any device or browser, no software required.

+25

Tools for PDF & E-signing

+200

Template Library

+100K

Users Editing with Confidence

Fast. Simple. No software needed.

How to Use the PDF Reader

01.

Upload Your PDF

  • Drag your file into the viewer or select it from your device. It loads directly in your browser.
Drag-and-drop upload screen showing a PDF file being added, with supported file types listed below.
02.

Annotate, Highlight, or Draw

  • Add notes, highlight text, underline, draw shapes, or mark up important sections. You can also add signatures when needed.
PDF editor interface showing a lease agreement preview with page thumbnails on the right and options to reorder or delete pages.
03.

Download or Save

  • Download your updated PDF immediately or save it to your Document Genius account for future access.
Pop-up message stating ‘Your document is ready’ above a preview of the finalized PDF and a download prompt.

Why Use Our PDF Reader

Effortless PDF viewing

Open and scroll through any PDF, with smooth zooming and a clean reading experience.

Annotate and collaborate

Highlight text, add comments, leave notes, and mark up important sections.

Draw and circle content

Use freehand drawing tools to underline, circle, or emphasize key areas.

Document Genius PDF editor showing editing options.

Works across all devices

Review and annotate PDFs on your phone, tablet, or computer, no apps required.

Part of the Document Genius PDF toolkit

After reviewing, you can edit, sign, organize, or convert your PDF, all in the same workspace.

Do More With Your PDFs

A complete set of tools for fast, accurate PDF editing.

Read It

View, zoom, scroll, search, and study documents easily.

Annotate It

Add notes, highlights, drawings, and comments for clear communication.

Edit It

Make updates, add text, insert images, or fill out forms.

Frequently Asked Questions

01

A PDF reader lets you open, view, and interact with PDF files. With Document Genius, you can also annotate, highlight, add notes, and sign documents online.

02

Upload your PDF to Document Genius, and it opens instantly in your browser. You can start reading and annotating right away on any device.

03

Windows includes a basic viewer, but Document Genius offers advanced features like annotation, drawing tools, highlighting, and cross-device editing.

04

A great PDF reader should include annotation tools, smooth navigation, and compatibility across devices. Document Genius offers all of these directly online.

05

It combines fast viewing with easy annotation, secure file handling, and seamless access to the full Document Genius PDF toolkit.

Read and Annotate PDFs Instantly

Simple viewing. Smart tools. No software needed.

Document Genius PDF editor showing editing options.