Upload a PDF and stamp text annotations on any page — pick the page, position, font size, and colour, then download. 100% browser-based, your file never leaves your device.
No annotations queued yet — load a PDF and add text on the left.
Annotate PDF stamps your own text directly onto the pages of an existing PDF — no Acrobat, no sign-up, no watermark. Pick the exact page, set the X/Y position in points, choose a font size and one of six colours, and the text is drawn straight into the document.
Because everything runs through pdf-lib in your browser, it works offline once the page has loaded and never touches a server. People use it to:
It runs 100% in-browser: your PDF never leaves your device and is not uploaded, so even confidential files stay completely private. Add as many annotations as you like across different pages, review them in the queue, then download the annotated PDF in one click.
No. pdf-lib loads and edits the file entirely in your browser, so your PDF never leaves your device and is not uploaded, logged, or transmitted. It even works offline once the page has loaded.
This tool adds text annotations — you type a line of text and it is drawn onto the page. It does not draw shapes, highlights, freehand ink, or images. Use it for notes, labels, stamps like "DRAFT", reference numbers, or filling flat form fields.
You set X and Y in PDF points, measured from the bottom-left corner (0,0). An A4 page is 595 × 842 pt and Letter is 612 × 792 pt. So X ≈ 50 gives a left margin and Y ≈ 800 places text near the top of an A4 page.
Yes. Add as many annotations as you like, each on whichever page you choose. They build up in a queue that you can review and remove individually, and all of them are applied together when you click Apply & Download.
Text is drawn in the standard Helvetica font at the point size you enter (6–72 pt). You can choose from six colour swatches: black, red, blue, green, purple, and orange.
Yes — the rest of your PDF is preserved exactly; only the new text is drawn on top. That text becomes permanent page content, so it cannot be re-edited from this tool afterwards. Your original file on disk is untouched, so re-upload it if you want to start over.
There is no fixed limit set by the tool. Since everything is processed in your browser, the practical ceiling depends on your device's memory — typical documents annotate instantly, while very large PDFs may take a moment.