Is Write on PDF safe?

Clean risk

Write on PDF sends selected online PDFs to modifypdf.io for annotation.

When you click its annotate button on a Google PDF result, PDF page, or context menu, the extension fetches that online PDF and opens modifypdf.io. It converts the PDF to a data URL, sends it into the modifypdf.io tab, stores it in that page's localStorage, and triggers the site's PDF import flow.

1Risk
Who publishes it

1 other listing from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Same store account

1 other listing published from this account, 7k+ users between them, none of them carrying a finding.

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.0.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Run its own code inside the pages you visit

    scripting

  • Add items to the right-click menu

    contextMenus

Where it sends data

Destinations our analysis observed Write on PDF contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • www.modifypdf.io

    Write on PDF sends data to www.modifypdf.io. No other extension we have analysed sends data here.

Updated 30 September 2026hlfkpachlhdpphhleifjkllcmklbaljp