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104 lines
8.5 KiB
Markdown
104 lines
8.5 KiB
Markdown
### All up-to-date significant adblockers¹
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#### Element removal (a.k.a. cosmetic rules, a.k.a. hiding rules)
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* `##.` / `##` / `###`: Hides parts of a page.
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* `#@#`: Whitelists parts of a page to make them load.
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* `[href="text"]`: Finds page elements whose values in the F12 filetree console contains such a value. The value can be `href`, `id`, `class`, `type`, or numerous other things. Does not support RegEx.
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* `[href^="text"]`: Same as above, except it finds anything whose value *begins* with the text.
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* `[href$="text"]`: Same as above, except it finds anything whose value *ends* with the text.
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* `[href*="text"]`: Same as above, except it finds anything whose value contains the text anywhere within it.
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* `[href="text" i]`: Save as above, except case-insensitive.
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* `:not(.element)`: Finds page elements that doesn't contain a specified element or text string. Can be paired with other syntaxes á la `:not(:-abp-contains(Example text))`.
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* `:-abp-contains(text)`: Finds page elements that contains such text within it.
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* `:-abp-has(.element)`: Finds page elements that contains such an element within it.
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* `:scope`: Used alongside `:-abp-has` to make it only find elements whose criteria match their immediate subelements.
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* `:nth-of-type(n)` / `:last-of-type` / `:only-of-type`: Finds page elements that are at a specific numerical position in a set.
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* `:before` / `:after`: Removes the pseudo-elements that belong to a page element.
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* `a` / `div` / `iframe` / `img` (among others): Looks for page elements that are specific element types, as seen in the F12 filetree console.
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* `+`: Blocks the element that is right below the criteria in the filetree. Example: `##.element + div` blocks that particular `div`.
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#### File blocking (a.k.a. blocking rules)
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* `||`: Blocks resources from domains or parts thereof from being loaded. For non-domain-specific resources, no pre-emption is needed at all.
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* `@@`: Whitelists resources from specific URLs to make them load.
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* `^`: Usually ensures that the subdomains are also covered by the entry.
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* `$third-party`: Ensures that resources from a domain are only blocked if you're not visiting the domain itself.
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* `$~third-party`: Ensures that resources from a domain are only blocked if you're visiting the domain itself.
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* `$domain=`: Ensures that resources from a domain are only blocked if you're visiting a specified website.
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* `$generichide`: Prevents all non-domain-specific (a.k.a. generic) hiding entries from working on a website. On Nano/uBO it prevents *all* non-domain-specific entries from working.
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* `$script`: Blocks resources from domains or parts thereof from being loaded, but only if it's a script, e.g. a JavaScript runtime.
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* `$csp`: Inserts additional *Content Security Policies* into the page.
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#### Universal
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* `! ` / `# `: Marks the start of a comment that shall not be interpreted as an entry.
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* `~`: Means that an entry does *not* apply to a specific domain.
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* `/\/\/\/` and similar: Text detections in RegEx format.
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* `[Adblock Plus n.n]`: Used by Adblock Plus, AdBlock, and forks of them to determine if they should load the filterlist. Number is the intended minimum ABP version. `2.0` and `1.1` are most common; `3.1` and higher is on the rise and can be used to block support for old or low-quality forks. This has no effect on uBO or its forks.
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### Nano Adblocker, uBlock Origin and AdGuard only:
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#### Hiding
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* `:style`: Changes the CSS values of an element, in much the same way as what userstyle extensions like Stylish would've done.
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* `{ }`: Same as above.
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* `:has-text`: Same as `:-abp-contains`.
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* `:has`: Same as `:-abp-has`.
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* `!#if`: Specifies that a section of entries only applies to specific platforms or extensions. Closed out by `!#endif`.
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* `:matches-css`: Looks for page elements whose existing native (i.e. non-inherited) CSS values match those of the criteria.
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* `:matches-css-before`: Same as above, but looks for CSS values in its pseudo-elements instead.
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#### Blocking
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* `$badfilter`: Deactivates a resource-blocking entry, even if it is present in another list.
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* `$important`: Makes a resource-blocking entry take precedence over another whitelisting entry.
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### Nano Adblocker and uBlock Origin only:
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#### Hiding
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* `!#include`: Embeds another filterlist that is hosted on the same domain (with numerous restrictions).
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* `##+js` (prev. `##script:inject`): Invokes a script that is embedded in those extensions, and usually using the script to modify a value on the site.
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* `:xpath`: An entry written with the very advanced Xpath syntax.
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* `##^`: Blocks resources before they've even been loaded, based on their values in *View source* instead of their F12 ones.
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#### Blocking
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* `127.0.0.1` / `0.0.0.0` / `::1`: Used by "*hosts*" system files to signify that network requests to such a domain shall be redirected to a local-only IP address, thus preventing it from loading. Nano and uBO treats it the same as `||`.
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* `||` + `$document`: Guarantees a danger warning when loading a page, which is not 110% guaranteed otherwise.
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* `$redirect`: Redirects resources to a neutered version that has been embedded in those extensions.
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* `$3p`: Same as `$third-party`.
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* `$first-party` / `$1p`: Same as `$~third-party`.
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### Adblock Plus, AdBlock and AdGuard only:
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* `:-abp-properties`: Don't take my word for this, but it appears to me to find pop-under elements that possess certain traits, such as text encodings á la Base64.
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### Adblock Plus and AdBlock only:
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* `! Redirect: `: Tells the adblocker to look for list updates from a new URL from that point on.
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* `#?#`: Required to make entries with `:-abp-has`, `:-abp-contains` and `:-abp-properties` work in those particular extensions.
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* `@@||` + `$document`: Turns off adblocking entirely while on that domain.
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* `$genericblock`: Prevents all non-domain-specific blocking entries from working on a website.
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### AdGuard only:
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* `#%#var AG_`: Similar to `##+js`, except with a completely different set of scriptlets.
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* `$empty`: Results in a fake empty page being loaded, instead of an error page.
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### AdGuard for [Windows/Mac/Android] only:
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* `! Description:`: Shows a description of the list's purpose, when the question mark next to the list in the AdGuard settings is hovered over. That being said, a description is convenient for users of all adblockers, if they're willing to look up a list's raw content.
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* `$network`: When applied to an IP address, it blocks all incoming requests from it, and not just when it's typed into a browser address bar.
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#### I honestly don't know what these ones do:
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* `$xmlhttprequest` / `$xhr`
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# Particularly important usage notes
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* `##.` / `##` / `###` entries can either be *generic*, in which they have no domains in front of them; or domain-specific, where they have one or more domains in front of them, separated by commas. Only Nano and uBO support wildcard asterisks (`*`) in such domains, while other adblockers do not.
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* `||` entries do support asterisk wildcards, but only in the criteria text. Additionally, when using `$domain=`, domains are separated with vertical lines, since commas are instead used to stack multiple `$` values.
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* `$generichide` entries must start with `@@||`.
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* ABP is known to severely struggle with handling `:style` entries, to the point where having ABP try to load a list with such an entry will cause it to invalidate the list *and* all its entries.
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* To make the text detection for `:-abp-contains` and `:has-text` case-insensitive, wrap the paranthesised text into `(/Example text/i)`.
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* `127.0.0.1` / `0.0.0.0` / `::1` supports only whole domains, and it can not be narrowed down to subdomains or elements.
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* The `"` in `[href="text"]` is optional, but *only* if the criteria text is only a single word.
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* In `:-abp-has` and `:has`, it is not needed to pre-empt the criteria elements with `##`.
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* `:style` and `{ }` does not allow to change `background-image` into a URL value.
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* It is claimed in [this comment](https://github.com/DandelionSprout/adfilt/issues/7#issuecomment-481978609) that Safari does not properly accept the use of `$third-party`.
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* Domains in `$domain=` are seperated by a vertical line (`|`), instead of the usual comma.
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* Amazingly, using `! Redirect: ` in the intended target link's list, will cause an infinite loop that prevents the list from being loaded.
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¹ = Includes Nano Adblocker, uBlock Origin ≥1.14.0, AdGuard, AdNauseum, Adblock Plus version ≥3.1, and AdBlock. It does **not** include AdGuard Home, Brave Browser, Slimjet, uBlock non-Origin, Adblock Plus for IE, Tracking Protection List, AdAway, or Blokada, whose syntax supports are considerably inferior to the above list.
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