StopTheMadness for Chrome Support

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Manifest version 2:
If you see an Errors button on the Chrome Extensions page, don't worry, this is actually just a warning about the deprecated Chrome extension manifest version 2. StopTheMadness continues to work, and a StopTheMadness update later in 2022 will adopt the newer Chrome extension manifest version 3.

Chrome extension Errors

Chrome manifest version 2

Privacy:
According to Google Chrome, StopTheMadness has permissions to "Read and change all your data on the websites you visit". However, this is just boilerplate text from Google shown for every Chrome extension that can modify webpages. StopTheMadness does not read, change, or share your personal data. The privacy policy has more details about StopTheMadness privacy.

If you've already set up Chrome to sync with your Google account, then your StopTheMadness Website Options will also be synced. This sync process is controlled by Google Chrome. The only data from StopTheMadness that would be synced is what you see in the StopTheMadness Website Options.

Website Options:
You can selectively enable and disable StopTheMadness features. Your custom options can be configured to apply to every web page or just to web sites that you specify. To change the options, open the StopTheMadness popup in the toolbar of a Chrome window. You can also open the Extensions window in Google Chrome, click the Details button under StopTheMadness, and then click "Extension options" on the Details page.

StopTheMadness Website Options

There are a number of protection features that you can enable and disable. By default, the "Recommended" features are enabled. These provide you with a high level of protection while also maximizing website compatibility. The features labeled "Use with caution" provide even higher levels of protection, but there may be more sites that don't work right when they're enabled, which is why they're disabled by default. The features labeled "Widespread breakage" are intended to be used sparingly, only on specific sites where you know you need them, because otherwise they can cause a large number of incompatibilities on other sites. Any and all of the features can be enabled or disabled as necessary or desired. Below is an explanation of each feature:

Recommended:

Use with caution:

Widespread breakage:

Custom <style> element and Custom <script> element:
If you enter text into this area, StopTheMadness will create a custom HTML <style> or <script> element on the web page. The text you enter will become the element's inline CSS or JavaScript. If the text area is empty, then no custom element is created on the web page. StopTheMadness doesn't check your syntax, so you'll probably want to copy the CSS and JS from elsewhere and paste it into StopTheMadness, for example from userscript sites such as Greasy Fork. (The custom <script> element is created after the DOMContentLoaded event.)

When you change the website options in StopTheMadness, those changes apply immediately to the active Chrome tab, and will apply to all web pages loaded thereafter in any tab. If you already had a web page open in a background tab before you changed the website options, and you want the changes to apply immediately to that web page, you need to switch to the tab and reload the page.

Redirects:
StopTheMadness can automatically redirect URLs so that when you open a link to one web site, your web browser loads a different site of your choosing. For example, you can redirect new Reddit to old Reddit if you prefer the old user interface. Or you can use privacy-preserving alternatives to popular web sites such as Nitter for Twitter and Invidious for YouTube.

StopTheMadness Redirects

StopTheMadness uses the JavaScript function String.replace() to redirect URLs. To create a redirect, you need a URL matching pattern and a replacement for that pattern. The matching pattern can be either a substring of the URL or a regex expression enclosed in "/" characters. The replacement is always a substring, though there are some special characters you can use in the replacement, as explained by the String.replace() documentation. Examples:

URL matching pattern Replacement
https://www.reddit.com/ https://old.reddit.com/
https://youtube.com/ https://invidious-us.kavin.rocks/
https://twitter.com/ https://nitter.net/
https://mobile.twitter.com/ https://nitter.net/
/^https?://(mobile\.)?twitter.com// https://nitter.net/
/^mailto:/ https://mail.google.com/mail/?view=cm&fs=1&to=
/^http:/ https:

The redirect rules are matched in the order they appear in StopTheMadness, though the order usually shouldn't matter if the rules are for different domains. If needed, you can use the up arrow buttons to change the order. You can also use the checkboxes to temporarily disable a rule.

How to Add Website Options:
The Default options for all websites apply to every web page in Chrome, unless you have custom options for a particular site. To create custom options for a website, press the New Customized Website button. There are two ways to specify websites: domain or URL. Examples of domains are "apple.com" and "google.com". If you specify a domain, then subdomains of that domain are automatically covered too. For example, "google.com" also covers "www.google.com", "mail.google.com", etc. If you want a subdomain to have different options than its domain, create a separate item for the subdomain. The longest match always wins, so if you have items for both "google.com" and "mail.google.com", then your "mail.google.com" options will apply when you load the page "https://mail.google.com/". If you want options to apply only to subdomains but not to the domain, put a dot at the beginning: ".google.com" applies to "https://www.google.com/", etc., but not to "https://google.com/".

You may want to apply custom options only to certain paths of a website, in which case you need to specify the website as a full URL. For example, if you enter "https://www.google.com/maps", then the custom options will only apply to Google Maps and not to Google Search at "https://www.google.com/". Subpaths are automatically covered too: "https://www.google.com/maps" would also cover "https://www.google.com/maps/search/apple+park". You can customize subpath options by creating a separate item for the subpath. As with domains, the longest match among URLs always wins. And a URL setting that includes a domain will override a domain setting for the same domain, since the URL is longer. So "https://www.google.com/maps" takes precedence over "www.google.com".

Known Website Compatibility Issues:
In these cases you may want to create custom website options and disable the specific feature.

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