Compatibility Matrix

Network Filters

Feature	Supported	Note
`*`, wildcard	✓	uBlockOrigin's Wiki
`^`, separator	✓	match any separator or EOL: `[^\w\d_.%-]\|$`
`@@filter`, exceptions	✓
`\|filter`, left anchor	✓	match left of URL
`filter\|`, right anchor	✓	match right of URL
`\|\|filter`, hostname anchor	✓	match hostname of URL
RegExp	✓
Pre-parsing directives		uBlockOrigin' Wiki


Type	Supported	Note


`$~type` (negation)	✓
`$image`	✓
`$media`	✓
`$object`	✓
`$object-subrequest`	✓
`$other`	✓
`$ping`	✓
`$beacon`	✓
`$script`	✓
`$stylesheet`	✓
`$css`	✓	alias for `stylesheet`
`$subdocument`	✓
`$frame`	✓	alias for `subdocument`
`$xmlhttprequest`	✓
`$xhr`	✓	alias for `xmlhttprequest`
`$font`	✓
`$websocket`	✓
`$webrtc`	✗
`$popup`		AdGuard's KB


Option	Supported	Note


`$domain`	✓	`\|`-separated list of domains or hostnames
`$~domain`	✓	negated domains or hostnames
`$badfilter`	✓	uBlockOrigin' Wiki
`$important`	✓¹	uBlockOrigin' Wiki, AdGuard KB
`$third-party`	✓	only apply yo third-party resources
`$3p`	✓	alias for `third-party`
`$first-party`	✓	alias for `~third-party`
`$1p`	✓	alias for `first-party`
`$redirect`	✓²	uBlockOrigin's Wiki
`$generichide`	✓
`$elemhide`	✓	using uBlockOrigin's semantics
`$csp`	✓³	AdGuard KB
`$match-case`	✗	all filters are considered case insensitive
`$document`	✓
`$doc`	✓	alias for `document`
`$genericblock`	✗	will not be supported
`$collapse`
`$content`		AdGuard KB
`$jsinject`		AdGuard KB
`$urlblock`		AdGuard KB
`$extension`		AdGuard KB
`$empty`		AdGuard KB
`$mp4`		AdGuard KB
`$replace`		AdGuard KB

[1] Missing is proper handling of exceptions with $important flag but there is currently no such filter in use in popular lists.

[2] Special none value is yet to be implemented and strict validation rules are not enforced.

[3] Missing strict validation of accepted CSP values.

Feature	Supported	Note
`##` selector	✓
`#@#` exception	✓
`hostnames`	✓
`~hostnames` (negation)	✓
`entities`	✓	uBlockOrigin's Wiki
`~entities` (negation)	✓	uBlockOrigin's Wiki
`:style`	✓	uBlockOrigin's Wiki
`script:inject(...)`	✓	uBlockOrigin's Wiki
`+js(...)`	✓	alias for `script:inject(...)`


Procedural filters		uBlockOrigin's Wiki, AgGuard's KB


`-abp-contains`		https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters#cosmetic-css-rules-syntax-1
`-abp-has`
`-abp-properties`
`:xpath(...)`
`:contains(...)`
`:has(...)`
`:has-text(...)`
`:if(...)`
`:if-not(...)`
`:properties(...)`
`:matches-css(...)`
`:matches-css-before(...)`
`:matches-css-after(...)`

As of April 2019 the following proportion of all filters are supported:

As a point of comparison, here are the same numbers for other blockers:

uBlock Origin:

AdblockPlus:

Brave: