How to use Edit & annotate PDF
- 1
Open the PDF
Drop the file into the editor; pages render as you scroll, and the thumbnail strip jumps straight to any page.
- 2
Choose a tool
Pick text, pen, highlighter, rectangle, ellipse, line, arrow, whiteout or image from the toolbar, set its color and size, then click or drag on the page.
- 3
Fix up the pages
Rotate a page, delete it or insert a blank one after it; Undo and Redo cover every change you make.
- 4
Save the edited file
Download writes your additions into the PDF and adds -edited to the file name, leaving the original untouched.
Limits and Pro
Free: PDFs up to 50 MB with any number of pages and annotations, and no watermark on the saved file.
Pro opens files up to 4 GB; very long documents remain limited by your device's memory while editing. See Pro
About Edit & annotate PDF
Edits are written into the PDF as vector content. Added text is real, searchable text in Helvetica, Times or Courier — or an embedded Noto font for alphabets those fonts lack — while shapes and freehand strokes become paths that stay sharp at any zoom, and inserted pictures are kept at up to 2,400 pixels on their long side. The pages you started with are carried over as they are: existing text, images, links and form fields are not re-rendered, and your additions sit on top, so the file grows only by what you add.
The toolbar covers everyday jobs: typing a note in any size and color, bold or italic; marking passages with a transparent highlighter; circling or underlining with the pen; boxing, pointing and connecting with rectangles, ellipses, lines and arrows; hiding a stray mark with whiteout; and dropping in a logo, stamp or photo. Every item can be selected, moved, resized, recolored or deleted, and the whole session has undo and redo. Pages can be rotated, removed or padded with blank pages, and pens and fingers work on tablets and phones.
It suits filling in a printed form, marking up a draft for a colleague, adding a company logo to a quote, or fixing a typo before you send a PDF on.
What it does not do: it doesn't reflow or retype text that is already in the PDF, so cover old words with whiteout and type over them. Whiteout only hides content and is not redaction — the original text stays in the file. Pages can't be reordered here, and interactive form fields are not filled in.
Privacy
The PDF is rendered by PDF.js and edited entirely within this tab, and a background worker on your device writes the saved copy. Images you insert are read locally as well; no page, picture or keystroke is uploaded, and closing the tab discards the editing session.
Features
Type anywhere
Click on a page and start typing; pick the font family, size, weight and color from the properties bar.
Pen and highlighter
Freehand strokes follow the pointer smoothly, and the highlighter multiplies over text instead of hiding it.
Shapes and arrows
Draw boxes, circles, lines and arrows with adjustable outline width, color and optional fill.
Whiteout
An opaque white box covers a mistake so you can type the correction on top of it.
Page tools
Rotate, delete or insert blank pages in the same session as your annotations.
Touch and stylus
Drawing, placing text and dragging handles all work with a fingertip or a stylus.