AcornDoc

Edit PDFs for free. Privately.

Add text, sign, highlight, white-out and add images. Reorder, rotate, delete and merge pages. Your files are processed on your device and never uploaded.

How it works

  1. 1

    Open your PDF

    Click Choose a PDF or drag a file onto this page. It opens instantly in your browser. Nothing is uploaded.

  2. 2

    Edit

    Pick a tool from the toolbar and click on the page. Switch to Select to move, resize or delete anything you added.

  3. 3

    Download

    Click Download to save the edited copy. Your original file stays unchanged.

What you can do

Good to know

We'd rather be upfront. Here's what this editor can't do yet.

White-out is not secure redaction. It hides content visually, but the original text is still inside the file and can be copied or found by search. Don't use it to hide sensitive information such as account numbers or ID details.

Keyboard shortcuts

V
Select
T
Text
M
Mark (tick)
L
Lines & shapes
R
Measure
D
Draw
Shift + drag
Snap angle / square / circle
H
Highlight
W
White-out
Del
Delete selected
←→↑↓
Nudge (hold Shift for 10×)
Ctrl+Z
Undo
Ctrl+Y
Redo
Ctrl+B
Bold / unbold text
Ctrl+S
Download
+ −
Zoom in / out
Esc
Finish typing / back to Select

Questions

Are my files uploaded anywhere?

No. Your PDF is opened, edited and saved entirely inside your browser. It never reaches our servers, and we can't see it.

Is it really free?

Yes. There's no account, no trial, no page limit and no watermark on your files.

Will my original file be changed?

No. Download saves a new copy (named “…-edited.pdf”). The original file on your device is never touched.

How do I edit text that's already in the PDF?

Use White-out to cover the old words, then use Text to type the new ones on top. Remember that the covered text is hidden, not deleted.

How do I change or remove something I added?

Choose Select (or press V), click the item, then drag to move it (even onto another page), drag the round corner handle to resize, or press Delete. Undo works too.

Does it work on my phone?

Yes, in up-to-date Chrome, Safari, Edge and Firefox. Tap the panel icon in the toolbar to see your pages. Detailed edits are easier on a larger screen.

Why does some of my text show as “?”

Added text currently supports Latin letters only (English, Spanish, French, German and similar). Support for more alphabets is planned.

Ready to edit your PDF?

Draw your signature

Set drawing scale

Find the scale printed on your drawing (for example “1/4" = 1'-0"” or “1:100”) and enter it here.

on paper =

How long is that line in real life?