Archive Page by John Navas

Adds a button to the Mozilla Firefox toolbar. When clicked, it sends the URL of the current tab to archive.today to preserve a snapshot of the page, and opens the result in a new tab.
Also includes Link context menu to Archive or Search, Page context menu to Search.
Archive URL can be bookmarked for future reference, shared, whatever. Uses HTTPS for security.
For similar functionality on Android, check out Share2Archive in the Play Store.

NOTES:
1. If you get an error, try again or try later. It's NOT an extension issue—archive.today sometimes gets overwhelmed.
2. CloudFlare DNS may not resolve archive.today, so if you experience DNS errors, try a different DNS service.

WHAT'S NEW:
0.5 Update: Option to open archive.today in adjacent tab, tab at end, or active tab.
Closing new tab now returns to original tab.

0.4 Update: Options to control new tab activation (separate for each function). New tab is activated by default. Uncheck option to not activate.

0.3 Update: Adds context menu items for:
• Page: Search archive.today for the page URL
• Link: Archive or Search link in archive.today

(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.)

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