Annotate a PDF — highlight, draw, comment
Highlight, draw, and comment on PDFs in your browser. No upload, no signup.
Files are processed entirely in your browser. Nothing is uploaded to any server.
How it works
- 1
Open the PDF
Drop or pick the file you want to annotate.
- 2
Mark it up
Highlight, underline, draw, or add sticky notes.
- 3
Download
Export with your annotations baked in.
Frequently asked questions
Will my annotations be visible in Adobe Reader?
Can I delete annotations later?
Is the file uploaded?
Multi-page support?
Touch / pen support?
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Embed this tool
Let your visitors use Annotate PDF without leaving your site. Paste the snippet below into any HTML page. Files stay private — everything runs in the visitor's browser.
<iframe
src="https://pdfwox.com/embed/annotate-pdf"
width="100%"
height="600"
style="border:none;border-radius:8px"
title="annotate-pdf tool"
allow="downloads"
loading="lazy"
></iframe>
<script>
window.addEventListener('message',function(e){
if(e.data&&e.data.type==='privpdf-resize'){
var f=document.querySelector('iframe[src="https://pdfwox.com/embed/annotate-pdf"]');
if(f)f.style.height=e.data.height+'px';
}
});
</script>The embed runs entirely in the visitor's browser — no files are uploaded. The iframe resizes automatically to fit its content via postMessage.
Deeper guide