What URL parameters work with Google Docs viewer?

Other Questions Google docs
1

I’m trying to discover the various URL parameters that can be used with Google Docs viewer.

Initially, I was only aware of the standard parameters like url, embedded, and chrome. However, I’ve recently stumbled upon other unusual parameters such as a, pagenumber, and some related to authentication as well.

Here’s an example of what I have been using:

const viewerUrl = 'https://docs.google.com/viewer';
const documentPath = 'https://example.com/my-document.pdf';
const finalUrl = `${viewerUrl}?url=${documentPath}&embedded=true`;

I want to enhance its functionality by adding features like specifying the starting page or managing authentication, but I can’t find any official documentation listing all the available parameters. Can anyone direct me to comprehensive documentation? Or does anyone happen to have a list of parameters they’ve tried and can confirm work?

2

there’s no official list anywhere, which is frustrating. I’ve had success with zoom=fit for scaling docs to fit the viewer window. pagemode=none also helps with certain pdf layouts. just heads up - these undocumented parameters can break when google pushes updates, so use them knowing that risk.

3

I’ve spent years messing with Google Docs viewer and found some hidden parameters that actually work. rm=minimal strips out most UI elements - great for clean embeds. hl=en forces language settings (mostly just UI stuff). printsec=frontcover sometimes helps with book previews, but it’s hit or miss depending on your document type. Here’s what’ll bite you: stack too many parameters and the viewer just breaks silently. Google validates parameter combos on their end, so if you’re mixing undocumented ones, test the hell out of it across browsers and formats before going live.

4

Google doesn’t document all viewer parameters because most are for internal use only. I’ve reverse engineered quite a few beyond the basic ones though. The pagenumber parameter works for setting which page loads first, but it’s flaky with some document types. I’ve confirmed a=v forces viewer mode and chrome=false kills the toolbar completely. You can use authentication parameters like authuser to access docs from specific Google accounts. Just don’t rely too heavily on undocumented parameters - Google can break or remove them anytime without warning. For production stuff, I’d stick with the basic documented parameters and build your own page navigation if you need it.