Highlight

Highlight online

Mark passages in five reading colors.

Drop your file in the tool below or choose it from your device to start.

No sign-up No watermark Runs in your browserFree for personal use1 file | up to 200 MB
Your file is processed on your device in this browser session. PDF me does not upload it to a processing server. Uses a local browser worker or WebAssembly module, still inside your browser.
Loading tool...
No sign-up No watermark Runs in your browser Free for personal use
01
Upload
Drop in one or many files.
02
Highlight
Mark passages in five reading colors.
03
Download
Save back to your device, Drive or Dropbox.
Related Tools
Edit PDFSign PDFAnnotateWatermark
Online PDF workflow

Highlight PDF text in five reading colors — mark passages in seconds.

Highlight text in PDFs using five reading colors. Mark important passages, add notes and export a clean annotated PDF. Free, browser-based, no sign-up. No account, no watermark, runs in your browser.

Mark key passages in five colors to distinguish priorities or categories.

Highlight directly on any PDF — scanned or text-based — without conversion.

Download the marked-up PDF ready to share with colleagues or students.

Is Highlight free to use?

Yes. Highlight is free for personal use, does not require an account and does not add a watermark to your exported PDF.

Are my files safe in Highlight?

Current live tools process files in the browser. Some tools use local browser workers or WebAssembly modules, but the document still stays on your device.

Can I use Highlight on mobile?

Yes. The tool works in modern mobile and desktop browsers, so you can upload, adjust and download PDFs without installing a desktop app.