Why can I annotate a PDF on my Chromebook but not in Chrome on Windows?

Because the text-annotation tool is part of ChromeOS rather than the Chrome browser. Google's help pages say directly: "You can't add text annotations to your PDFs in the Chrome Browser."

Can I sign a PDF in Chrome?

You can draw on it, which is what Chrome calls signing. Google notes the feature is for convenience and provides no verification or security. PDFpad produces the same kind of electronic signature but lets you draw it with a finger, type it, or upload a photo of a real one, and keeps it for reuse.

PDFpad vs Chrome PDF viewer

Prices and features checked 20 September 2026

Chrome will open a PDF, let you fill in real form fields, and — on a Chromebook — let you add text, highlight and sign with a freehand scrawl. Google says as much in its own help pages.

On Windows and macOS the text tool is missing: Google states that you cannot add text annotations to PDFs in the Chrome browser. Google also notes that the signing feature "doesn't provide signature verification or security".

PDFpad and Chrome PDF viewer, feature by feature
Feature	PDFpad	Chrome PDF viewer
Type on a flat (non-form) PDF	Yes	Partly
Fill existing form fields	Yes	Yes
Typed signature	Yes	No
Drawn signature (touch/mouse)	Yes	Yes
Upload signature image	Yes	No
Save and reuse signature	Yes	No
Date and tick fields	Yes	No
Flatten so fills can't be moved	Yes	No
Save as PDF	Yes	Yes
Save as Word (DOCX)	Paid only	No
Reorder / delete / merge pages	No	No
Works on a phone browser	Yes	No
File never uploaded	Yes	Yes
No watermark on free tier	No	Yes
No account needed to start	Yes	Yes

Pricing, as published by each vendor
Tool	Free tier	Paid	Billing
PDFpadChecked 20 Sept 2026	Unlimited filling and signing; 3 PDF exports per 30 days, each with a small footer line	£6 a month, £39 a year, or £2 to unlock one document for 24 hours	Monthly or annualOne click from the account page, any time
Chrome PDF viewerChecked 20 Sept 2026	Free — built into Chrome and ChromeOS	—	—

Choose Chrome PDF viewer if…

You are on a Chromebook, where the text and signing tools are built in
The PDF already has proper form fields and you only need to type into them

Choose PDFpad if…

You are on Windows or a Mac, where Chrome will not let you type onto a flat form at all
You want ticks, dates and a reusable signature rather than freehand drawing
You need the result flattened, or as a Word document

What each vendor says

Chrome PDF viewer

Google says the viewer lets you "highlight, annotate or draw on a document" and "fill in and sign paperwork". [source]
Typing is the catch: "You can't add text annotations to your PDFs in the Chrome Browser" — the text tool is a ChromeOS feature, so on Windows or a Mac you are limited to drawing. [source]
Google states plainly that the signing feature "is for convenience and doesn't provide signature verification or security". [source]

Questions

Why can I annotate a PDF on my Chromebook but not in Chrome on Windows?: Because the text-annotation tool is part of ChromeOS rather than the Chrome browser. Google's help pages say directly: "You can't add text annotations to your PDFs in the Chrome Browser."
Can I sign a PDF in Chrome?: You can draw on it, which is what Chrome calls signing. Google notes the feature is for convenience and provides no verification or security. PDFpad produces the same kind of electronic signature but lets you draw it with a finger, type it, or upload a photo of a real one, and keeps it for reuse.

Try it on your PDF

Open your document, fill it in, sign it and save. Nothing is uploaded, and you don’t need an account to start.

or drop a file here · nothing is uploaded

Competitor names are used descriptively to identify their products. Every price and feature above was read from the vendor's own page on the date shown and is re-checked quarterly. If something here is out of date or wrong, tell us and we will correct it.