Free PDF annotator
Annotate your PDF file online in seconds. Drop your PDF file below, select annotate and start editing. Easily annotate PDF files online for free.
or drop your first file here
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How to annotate a PDF online
Follow these simple steps to annotate your PDF.
1
Upload
Drop a PDF file into the dropzone above or click the select a file button.
2
Select annotate
Sign-in and select ‘annotate’ in the left navigation bar of the editor.
3
Annotate your PDF
Here, you can add text, highlight, draw, insert images and add comments.
Do more than just annotate PDFs
PDF editing made easy
Easily edit PDF text
No more workarounds. Use our Edit PDF text feature to directly make updates to your PDF content.
Sign documents online
Ditch the printer and eSign your PDF in seconds. Add safe and secure signatures and initials to any PDF for free.
Merge, split and extract pages
Put your PDFs in order with Lumin’s Page Tools: merge, split, crop, add, delete or rotate PDFs in seconds.
Google-integrated PDF editor
Cut time and tools by consolidating your online PDF editing process. Open documents directly into Lumin from Google Drive, Gmail or Classroom, edit them, then sync them back to your Google Drive storage.
One platform for all your PDF tools
Bring work to life with our comprehensive suite of PDF editing tools. Share, edit and comment on documents in the cloud.
Edit PDF text
Edit PDF text directly without converting your document
eSign a PDF
Create a unique eSignature for quick signing
Fillable forms
Build fillable forms to make paperwork easy
Merge PDF files
Combine multiple documents to create a single PDF
Collaborate live
Share feedback, action items and edit documents in real-time
Mark-up PDFs
Draw, add shapes, text, highlights, images and more
Convert to PDF
Convert your Word, Excel, JPG or PPT files into PDFs
Unlock a PDF
Gain access to password protected files in just a few clicks
Split PDF files
Split and extract information into multiple PDF files
PDF Reader
Open PDF documents on your browser, desktop, mobile or tablet
Search scanned text
Make scanned text readable and searchable with OCR
Google Workspace
Lumin integrates with Google: use it from Drive, Classroom and Gmail
Compress a PDF
Reduce the size of your file for easy sending
Template discovery
Find, fill and sign 5,000+ free online forms and templates
Template Discovery
Go from discovery to done with our library of forms and templates. We’ve got what you need to tackle any task: tax forms, contract templates, health and safety checklists, onboarding forms and much more.
Browse all templatesJoin over 100 million customers
More impact, less admin. Annotate PDFs online free.
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Frequently asked questions
Is Lumin’s PDF annotation free to use?
Lots of our tools are free. You can read PDFs, draw on them, comment on them, add text, signatures and images; all the basics are covered.
Our paid plans expand your toolkit: you can edit PDF text, redact information, create fillable fields and much more. 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 our most popular features.
Can I annotate a PDF on mobile?
Yes, absolutely. Lumin has a desktop, mobile and tablet app that syncs all your files and updates so you can pick up where you left off. Our app is compatible with both Apple and Android devices.
Can I annotate a PDF while offline?
Yes! While Lumin is designed for the cloud, we know sometimes work happens from the ground. Just switch on “offline mode” and continue editing your document. When you next connect to the internet, your edits will be saved. Learn more here.
Discover our products
Lumin
An easy-to-use PDF editor that stands alone or integrates with Google Workspace.
Lumin Sign
A digital signature workflow tool that seals deals with legally-compliant signatures.
Lumin Sign API
An eSignature API made to be plugged into your platform with minimal effort.