PyrbitPyrbit › Pyrbit PDF › PDF tools › Highlight PDF
Annotate
Highlight, underline and comment on a PDF.
Mark up a contract, a paper or study notes. Highlight in several colours, underline or strike out text, and leave comments — the marks are saved as standard PDF annotations.
Runs in your browser·Files are never uploaded·One free document every 24 hours with a Google account
How it works
Highlight PDF in three steps.
Choose the PDF
It opens in the editor’s Markup tools.
Mark it up
Pick Highlight, Underline or Strikeout and a colour, then drag over the text. Use Comment to add a note anywhere.
Save the PDF
Undo anything you don’t want, then save the annotated copy.
What you can do
What Highlight PDF does.
- Highlight in yellow, green, blue or pink
- Underline and strike out text
- Add comments (sticky notes)
- Undo and redo every mark
Private by design
Your PDF never leaves your device.
Highlight PDF runs inside your browser tab. The file you choose is read from your device, processed there, and the result is saved back to your device — it is never uploaded to a Pyrbit server, so there is no copy to keep or delete.
Processed in your browser
The Pyrbit PDF engine runs on your computer or phone, not in the cloud.
No upload
Your document isn’t sent anywhere — not to us, and not to a third-party converter.
Sign-in is for your plan only
Your Google account keeps track of your free daily document and Pyrbit Pro. It never gives us your files.
Prefer offline?
The Pyrbit PDF apps do the same work on your phone, tablet or Mac — even without a connection.
Web or app
Use Highlight in your browser, or in the free app.
Web browser
Works on any computer, tablet or phone with a modern browser. Sign in with a Google account to use the web app: one free document every 24 hours, with any tool. Pyrbit Pro (₹79/month or ₹599/year) gives unlimited use with no ads.
iPhone, iPad & Mac
Every tool, including Highlight, with no file-size limit and offline use. Free on iPhone and iPad (with ads); the Mac app is paid.
Android & Chromebook
Every tool, including Highlight, with no file-size limit and offline use. Free, supported by ads.
FAQ
Highlight PDF questions.
Will other readers show my highlights?
Yes. They’re standard PDF annotations, so Acrobat, Preview and browser viewers display them.
Can I remove a highlight later?
Yes, in any PDF editor that supports annotations — or flatten the PDF to make them permanent.
Can I highlight a scanned PDF?
You can draw highlight areas on any page; for word-by-word selection on a scan, run OCR first.
Is Highlight PDF free?
On the web, sign in with a Google account and you can use Highlight PDF — or any other tool — on one free document every 24 hours. Pyrbit Pro (₹79/month or ₹599/year) gives unlimited use with no ads. The Pyrbit PDF apps for iPhone, iPad and Android are free, supported by ads.
Ready when you are.
Open Highlight in your browser — your file stays on your device.