Annotate PDFs with Lumin.

Add comments and notes to documents in real-time.

Brands that choose us

  • Tiktok
  • Uber
  • Tesla
  • Netflix
  • salesforce
  • airbnb

You’ve got the files, we’ve got the tools.
Try Lumin’s free PDF annotation tool.

  • Annotate your PDF digitally

    Annotate your PDF digitally

    Keep it easy in the cloud. Upload your PDF files and use our suite of digital annotation tools to make your mark. Add shapes, text, comments, images and more.

  • We’re in sync with Google

    We’re in sync with Google

    We make it easy for you by being fully integrated with the tools you love, like Google and Dropbox. All your edits are made in real-time and your work saved automatically.

  • Tools for everyone

    Tools for everyone

    Whether you’re a student looking to highlight PDF notes, a teacher looking to mark homework or you’re simply looking to sign and send a document, you can do it with Lumin.

Do more doing with Lumin.
Try our PDF annotator for free.

How to annotate a PDF

  • 1. Sign-up

    Head to and create a free account, if you haven’t already. Upgrade to Professional free for 7 days to unlock our full suite of features including advanced PDF annotation tools and increased storage capacity.

  • 2. Add files

    Upload a PDF via Google Drive or Dropbox, or simply drag it in from your desktop and double click to open.

  • 3. Explore tools

    You’ll see our full suite of annotation features in your toolbar. Try them out!

Plans & pricing

Choose the plan that’s right for you


Get Started
  • Access limited features

  • Limited file upload size (20MB)

  • 2 eSignatures

  • Email support


Start Free 7-Day Trial
  • Unlimited editing feature

  • Unlimited uploads

  • Unlimited eSignatures

  • Unlimited page tools

  • No advertising

  • Priority email support

Looking for a team or business plan?View all plans

See why over 70 million people choose Lumin

Frequently Asked Questions

  • Is Lumin free?

    Sure is! Though we do have options for people and businesses wanting to unlock all our features – such as unlimited storage and certain tools only available to Professional users – you can try Lumin Professional free for 7 days, or stay on a free plan. Discover our plans to learn which one is the right fit for you.

  • How do I use Lumin?

    Lumin works on your browser, or you can download our desktop app and keep Lumin handy on your computer. We’ve also got a mobile and tablet app which includes Lumin’s most popular features.

  • Can I highlight PDFs?

    Yes, absolutely. We have a highlighter feature available to all Professional users. Upgrade to Professional (free for 7 days) to try out this feature yourself.

  • Can I draw on PDF documents?

    Yes, we have a freehand tool that lets you draw on documents. Use it on your tablet with a pen for more control. You’ll find the freehand tool in Lumin’s toolbar.