How to use PDF Annotator?

Annotate PDF with highlights and comments online for free. Mark up documents. Just upload your file and click Convert/Process. Browser-based, private, no upload for most tools.

Is it free and private?

Yes. Free to use, privacy-first. Files are processed locally in your browser where possible and auto-deleted if server is used.

What file limits apply?

Free: up to 100 MB per file. Premium: larger files and batch processing.

All PDF Tools

60 tools • Privacy-first • No upload needed

Browse all

Compress

Reduce PDF file size

Compress PDF

Convert

PDF conversion & OCR

PDF to Image

Export PDF pages as images

PDF to JPG

Image to PDF

Convert images to PDF

JPG to PDF

PDF to Office

Export PDF to editable Office formats

Office to PDF

Convert Office documents to PDF

OpenOffice to PDF

Convert OpenOffice documents

Convert to PDF

Create PDF from various formats

iWork to PDF

Apple iWork conversions

Pages to PDF

Organize

Manage PDF pages & structure

Edit

Edit & annotate PDFs

Fill & Sign

Sign and request signatures

Protect

Secure PDF files

AI PDF

AI-powered PDF intelligence

Scan

Scan to PDF

PDF Scanner

Repair & Compare

Fix and compare PDFs

Image to PDF

Extended image conversions

Compress (India)

Target-size compression for portals

All tools run in your browser where possible • Files never stored

View all tools →

ToolsLead

Privacy-first • No file stored

PDF Annotator

Annotate PDF with highlights and comments online for free. Mark up documents.

Annotation

Need 200MB/500MB? Upgrade to Pro/Business

Related Guide — Learn more about this tool

Comparison8 min read

Best Free PDF Tools Online in 2026: ToolsLead vs Adobe vs Smallpdf (Honest Comparison)

Free PDF tools compared honestly — features, file limits, privacy, watermarks and pricing for Indian users. See where ToolsLead wins and where Adobe still leads.

Read guide Aug 25, 20268 min read