Annotate PDF
Review documents without installing anything: highlight key lines, add text notes, draw freehand, and mark up with rectangles, ellipses and arrows — all locally in your browser, then written into the exported PDF.
Drop your file here
or choose from your device — no sign-up needed
Files are processed locally in your browser — never uploaded to any server
Full-release pricing preview: $6.9/mo or $49/yr · 30-day email notice before billing starts · nothing is charged during the beta
How it works (3 steps)
Upload the PDF and pick a tool
Highlight mode by default; switch to text, draw, rectangle, ellipse or arrow, and pick color and font size.
Annotate the page
Drag to draw highlights and shapes, click to add text; in Select mode you can move, resize or delete anything, and flip pages to annotate more.
Export the annotated PDF
Hit Start to write annotations into the PDF and download _annotated.pdf.
Popular searches
- highlight PDF online
- add text notes to PDF
- draw arrows on PDF
FAQ
No — rendering, annotating and exporting all run locally in your browser.
Try it ↑Annotations are flattened into the page content at export, so they display identically everywhere but cannot be re-edited individually. Adjust or delete them freely before exporting.
Try it ↑Yes — CJK text automatically embeds a Noto Sans SC subset so it renders on any device.
Try it ↑No, highlights are drawn with multiply blending, so text underneath stays readable.
Try it ↑No. Any change to a signed PDF (merging, compressing, watermarking…) invalidates the existing digital signature — that is the tamper-proof design of PDF signatures, not a limit of this site. Process first, then sign.
Try it ↑Yes — and you can verify it: the tool runs on open-source in-browser engines (pdf-lib, pdf.js, Tesseract OCR…) on your own device. Open DevTools → Network while processing and you will see no file upload requests.
Try it ↑Related tools
Sign PDF
Draw a signature, type your name in a script font, or upload a signature image — then drag it onto any page, resize and export
Light PDF Edit (Whiteout + Text)
Fix a typo, change a date, or cover a stray mark: whiteout the original content and type replacement text in place
Remove Annotations from PDF
Graded papers, contracts full of colleague markup — clear highlights, underlines, text boxes and ink drawings in one click and get the clean original back