Preserve web page in archive.today
When viewing a web page in a web browser (e.g. Chrome) use Share action and select this app to open that web page in archive.today (using the default browser not necessarily the same browser). Verified to work with many different browsers.

(archive.today is a time capsule for web pages. It takes a 'snapshot' of a webpage that will always be online even if the original page disappears. It saves a text and a graphical copy of the page for better accuracy and provides a short and reliable link to an unalterable record of the web page.)

For similar functionality on desktop see Archive Page extensions (same icon).

PLEASE: If you encounter a web page where this app doesn't work instead of giving the app a low rating send us the details (URL browser Android version device) and we'll do our best to fix it.

Disclaimers: Use at your own risk.
This app is not affiliated with archive.today