In cooperation with Google Summer of Code, The Internet Archive presents The Official WayBack Machine Extension. With the power of the WayBack Machine, we let you go back in time to see how a URL has changed and evolved through the history of the Web!

• Save Page Now - Instantly save the page you are currently viewing in the Wayback Machine. Turn on Auto Save Page in settings to save pages that have not previously been saved. Must be logged in to use.
• Oldest, Newest & Overview - View the first version of a page or the most recently saved in the Wayback Machine. Or view a calendar overview of all archived pages.
• Replace 404s, etc... - When an error occurs, automatically check if an archived copy is available. Checks against 4xx & 5xx HTTP error codes.
• Wayback Machine Count - Display count of snapshots of the current page stored in the Wayback Machine.
• Fact Checks - Provides a list of fact checkers who have analyzed the web page you visit for misinformation, provided by our.news.
• Annotations - Provides a list of annotations for the current web page and domain, provided by Hypothes.is.
• Relevant Resources - View archived digitized books while visiting Amazon Books, research papers and books while visiting Wikipedia, and recommended TV News Clips while visiting news websites.
• Site Map & Word Cloud - Present a sunburst diagram for the domain you are currently viewing, or create a Word Cloud from the link's anchor text of the page you are on.
• Tweets, Alexa Internet, Share Links - Search Twitter for information regarding your current page, or provide analytics from Alexa Internet. Share archived links on social media.
• Bulk Save - Archive a list of URLs that you provide, or retrieve from bookmarks.

Follow the steps below for the currently deployed version.

1. Go to our page on the Chrome Web Store.
2. Click the Add to Chrome button, then Add extension.
3. Click on the Extensions puzzle-like icon in the toolbar.
4. Now click on the Pin icon next to Wayback Machine.
5. Click on the newly added icon.
6. Read the terms, then Accept and Enable. Click on the icon again to use the extension.

1. Go to the Firefox Add-Ons website.
2. Click + Add to Firefox
3. Click on the newly added icon in the toolbar.

Follow the steps below to install the latest build on your local machine.

• First tap on the Code button, Download ZIP, then unzip the file in a location where you can find on your computer.

1. Open Chrome and navigate to chrome://extensions in your browser. You can also access this page by clicking on the 3 vertical dots menu on the top-right, hovering over More Tools, then selecting Extensions.
2. Turn on the switch next to Developer mode.
3. Click the Load unpacked button and select the wayback-machine-chrome/webextension directory that contains this code.
4. Click on the Extensions puzzle-like icon in the toolbar.
5. Now click on the Pin icon next to Wayback Machine to pin it.
6. Click on the newly added icon.
7. Read the terms, then Accept and Enable. Click on the icon again to use the extension.

See What are extensions? for more information on Chrome extensions.

1. Open Firefox and navigate to about:debugging in the browser. You can also access this page by clicking on the hamburger menu on the top-right, select Add-ons, then the Gear Tools button on the top-right, then Debug Add-ons.
2. Click This Firefox on the left.
3. Click Load Temporary Add-on...
4. Open the wayback-machine-chrome/webextension directory and select any file.
5. Click on the newly added icon in the toolbar.
6. Read the terms, then Accept and Enable. Click on the icon again to use the extension.

See Temporary installation in Firefox for more information on Firefox extensions.

1. Open Edge and navigate to edge://extensions in your browser. You can also access this page by clicking on the 3 horizontal dots menu on the top-right, then clicking Extensions.
2. Turn on the switch next to Developer mode.
3. Click the Load unpacked button and select the wayback-machine-chrome/webextension directory that contains this code.
4. Click on the newly added icon in the toolbar.
5. Read the terms, then Accept and Enable. Click on the icon again to use the extension.

This code is not yet ready to run on Safari 14, but it is currently being worked on.

If you previously used the command line to clone this repo, note that it has been renamed. To update your local copy, run one of the following commands from the repo's directory.

SSH: git remote set-url origin [email protected]:internetarchive/wayback-machine-webextension.git

HTTPS: git remote set-url origin https://github.com/internetarchive/wayback-machine-webextension.git

If you have a GitHub account, please check the list of existing issues (bugs are tagged red), then create a New issue to file a Bug report or Feature request.

This step is not required if you only want to try out the extension.

• To setup the testing environment, run npm install to install required packages. This should create directory node_modules and populate it with modules.

• To run tests, execute npm test.

• When writing a test for example.js create a new file in the test directory named example.spec.js.

• To recreate the /webextension/scripts/build.js file run npm run-script build which will run webpack.

This has been tested using node v10.11.0 and npm 6.4.1.

To contribute code and docs to Wayback Machine Chrome extension, take a look at our Contribution Guide and Style Guide.

• Richard Caceres @rchrd2
• Rakesh Naga Chinta @rakesh-chinta
• Abhishek Das @abhidas17695
• Mark Graham @markjgraham
• Benjamin Mandel @BenjaminMandel
• Anton Shiryaev @Eagle19243
• Kumar Yogesh @kumarjyogesh
• Vangelis Banos @vbanos
• Kerry Rodden @kerryrodden
• Max Reinisch @MaxReinisch
• Anish Kumar Sarangi @anishsarangi
• Pushkit Kapoor @tikhsuP
• Carl Gorringe @cgorringe

Copyright © 2017-2020 Internet Archive. All rights reserved.

Licensed under the terms of the GNU Affero General Public License version 3 (AGPLv3).