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See the Update Scanner Documentation for basic operation.

FAQ

What should I do if I find a bug?

If you have a problem with Update Scanner, please raise an issue. In order to make it easier to diagnose and fix the problem, please include as much information as possible.

It's often useful to start with a fresh Firefox profile with no configuration changes or other addons installed.

Then record the exact sequence of steps to reproduce the issue. For example:

Steps to Reproduce:

1. Create a new Firefox Profile.
2. Install Update Scanner v4.4.44.
3. Add https://www.example.com/example to the scan list.
4. Open the Update Scanner sidebar.
5. Right-click the Example page in the sidebar and click "Scan".
6. Wait for a few seconds
7. Click the Example page in the sidebar

Next, describe what you expect to happen:

Expected Results:

Example page is displayed in the main tab.

Finally, describe what actually happened:

Actual Results:

The computer caught fire.

How do I see why a page was identified as "changed"?

1. Click on the page in the sidebar.
2. From the "Settings" menu on the right, select "Debug Info".
3. Download the Old and New HTML text.
4. Use a diff tool to see what has changed (eg. http://winmerge.org).

Why do some websites not work?

Update Scanner looks for changes in a web page's HTML content, so websites that use Javascript to load content won't always work.

Sometimes these sites have an option to fall back to HTML-only mode. You could try using Quick JS Switcher (or similar) to view the website with Javascript disabled before adding a page to Update Scanner.