How to download older versions of Chrome from a google official site

@Sebastien is right.

But if you want to download Chromium without known any version number, this page provides verison list to download:

https://vikyd.github.io/download-chromium-history-version/

Unofficial page, but official downlaod links inside. still safe.


I was having some trouble with the accepted answer, but I found this list of official download links by version number:

https://chromium.cypress.io


Older version of Chrome are not publicly available but you can find and download the matching Chromium binaries from the Chromium build server.

To do so follow the procedure below (derived from Chromium wiki):

1/ Find the Full Version Number

You can lookup the full version number matching a release by searching in the Chrome Releases Blog

Example:

  • Searching for "Chrome 69"
  • We find this Blog Entry
  • That lists the full version number 69.0.3497.81

2/ Find the Branch Base Position

Use the "Version Information" tool to find a Branch Base Position for the Full Version number. To do that enter the Full Version Number and press lookup. If the version returns an empty Branch Base Position try increment the last component of the version until you get a Branch Base Version.

Example:

Looking up 69.0.3497.81 image.png retrieves no Branch Base Position

But looking up 69.0.3497.82 enter image description here retrieves Branch Base Position: 576753

3/ Download the content for Branch Base Position and platform

Then download the content from the url where you replaced your platform and Branch Base Position value. https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=[platform]/[Branch Base Position]/

Where [platform] is either "Win_x64", "Linux_x64" or "Mac"

Example:

for Chrome 69 on Linux https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html?prefix=Linux_x64/576753/