Want to say thank you to sneakypete81 for creating a great addon like this! The addon saved me a lot of time!

I have an idea: search by keywords. Do only search for the text or numbers you want to change. This is convenient when you follow the price change. The current settings give a lot of false positives.

У меня есть идея: поиск по ключевым словам. Сделать поиск изменений только у нужного текста или цифр. Это удобно, когда следишь за изменением цены. Текущие настройки дают много ложных срабатываний.

Fantastisch, spart unglaublich Zeit beim Checken von Websites auf Updates.

5 stelle semplicemente perché è indispensabile

La exensión más útil que he usado, llevo años con ella

* Previous version is better
* It would be more convenient if the ' Scan All Pgae ' button is outside.
* Please correct the error problem of Korean web page.
* Please modify search interval.
30/60 seconds / 120 seconds ...

So glad to have this on my phone

This is one of my must have extensions. Especially useful for sites that don't have an RSS feed.

Nov 2025 update: roughly a year or so ago this extension stopped working properly for some sites (displaying a mainly black page). In the past few months it has been working properly for the sites it failed on. So as far as I'm concerned it seems to be back to what I'd expect, despite not having been updated since 2019.

Posted c. 2017:
Comparing the Update Scanner for FF57, as of 21Nov17, with its predecessor: I much prefer the old version. The new version opens sites in a page of its own, with a name like "moz-extension://f79626ca- etc. etc.". If you click on a link in the page it no longer works; on seeing a list of changed files, you can't click on any of them. This is a major issue for me.

It was convenient, with the sidebar opened, to click there to scan all pages. There may be ways round these issues, but they're not obvious. A nuisance, not major. I usually scan manually, setting the automatic scan to once weekly.

As many have commented, the scanner often reports pages to have been changed when there is no visible change; I expect that is unavoidable due to the nature of the pages, but is a nuisance.

On balance I still find the current version better than nothing; in particular I have a list of sites to remind me which to check. But it's got worse.

It's soooo goooood. Thank you!