Highlight and annotate a PDF
Highlight, underline or strike out text, add notes and enclose areas in boxes.
Free · no sign-up required · works on your phone · unlimited
It is processed on your device, not on our servers: your files are not uploaded to the internet. With large files it may take a while and your device may run slower while it works; don't close this tab until it finishes.
Your PDF
Frequently asked questions
How do I highlight?
Choose “Highlight” and a color, and tap the lines you want to mark.
Can any reader see the notes?
Yes: they are drawn on the page, so they look the same on phones, computers and when printed.
Is my PDF uploaded?
No. Everything is done on your device.
Did you see wrong data or something that doesn't add up? Need personal help? Contact support