Choose a PDF, type your comment, then click on the page where its sticky note belongs. The note is added as a real PDF comment annotation — readers see the note icon on the page and open it to read your text. Runs fully in your browser — nothing is uploaded.
Review without defacing: park proper PDF comments on the exact spots they refer to — readers click the note icon to read them.
100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device
Add proper PDF comments: type a note, click where it belongs, and it is saved as a real annotation — a note icon on the page that readers click to read your text.
A reviewer works through a report: “Source for this figure?” on page 3, “This date contradicts page 9” on page 7 — the author opens the file and each note is parked on the exact sentence it questions.
Comments are stored as standard PDF text annotations — the format’s own sticky-note mechanism — created at the low level of the document structure with your text as the annotation contents and your name as its author when given. Readers, browsers and Acrobat all show the note icon at your click point and open the note on click. Nothing is drawn over the page itself, so the document’s appearance stays clean.
As a small note icon at the point you clicked. Clicking or hovering it in any mainstream reader opens your full text.
Remove it with its ✕ in the list and place a new one with corrected text.
Most readers print documents without annotation contents by default (icons may show) — comments are a review layer, not page content. For permanent visible notes, use Edit PDF to stamp text on the page.
No — it is optional. When given, it is stored as the annotation’s author, which review tools display.
No. Commenting runs entirely in your browser.