Yes, you can click on the link below to be taken to the Chrome Web Store and click on the Connect button to add it to Chrome or Firefox:
Add DocHub as a Chrome Extension to my web browser
You can also still add DocHub to your Google Drive and Gmail as a progressive web app where you can edit and sign PDFs and other filetypes with DocHub from within Drive or while viewing an email with a file attachment in Gmail. You can do this in any web browser, not just Chrome, but it's brought to you via the Chrome Web Store. To learn more, see our article for How do I add DocHub to my Google Drive as an app to open & edit documents? .