uBO Lite Test Page

Test filtering capabilities according to selected filtering mode, basic, optimal, or complete. Regardless of how the page is navigated to — including at browser launch — results should not be different. Requirements:

• Stable version of uBO Lite above 2025.3.8.1350
• "uBO Lite Test Filters" enabled in the Filter lists pane in uBO Lite’s dashboard

Basic network filters (DNR)

• filtering mode in popup panel is no filtering:
• filtering mode in popup panel is basic, optimal, or complete:

/bnf1.$script,to=…

/bnf2.$image,to=…

Advanced network filters (DNR)

• filtering mode in popup panel is no filtering:
• filtering mode in popup panel is basic, optimal, or complete:

/anf1.$image,redirect=32x32.png,from=…

/anf2.html$frame,csp=script-src 'none'

Specific cosmetic filters

• filtering mode in popup panel is no filtering or basic:
• filtering mode in popup panel is optimal or complete:

###ccf #ccf1 .fail

###ccf #ccf2 .fail:not(.a4)

###ccf #ccf3 .fail:style(visibility: hidden)

###ccf #ccf4 .fail-pseudo::before

###ccf #ccf5 .fail-pseudo::before:style(visibility: hidden)

Procedural cosmetic filters

• filtering mode in popup panel is no filtering or basic:
• filtering mode in popup panel is optimal or complete:

##.fail:has(b)

##.fail:has(> a > b)

##.fail:has(+ a > b)

##.fail:has(:is(.pass a > b))

##.fail:not(:has(c))

I am a needle!!!

##.fail:has-text(needle)

I am a needle!!!

##.fail:has-text(/NEEDLE/i)

I am a needle!!!

##.fail:not(:has-text(haystack))

##.fail:matches-css(position: absolute)

##.fail:has(a:matches-css-before(opacity: 0))

##.fail:has(b:matches-css-after(opacity: 0))

##.fail > a > b:nth-ancestor(2)

##:xpath(.//b/../..)

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magnaaliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.

##.fail:min-text-length(300)

##.pass > a:has(b) + .fail

##.pass > a:has(b) + .fail:has(b)

##.pass:watch-attr(class) > .fail:has(b.notok)

##.fail:has(+ a)

##.fail:has(~ a:has(b))

##.fail:remove()

##b:upward(2)

##b:upward(.fail)

##b:upward(.fail):style(visibility: hidden !important)

Scriptlet filters

• filtering mode in popup panel is no filtering or basic:
• filtering mode in popup panel is optimal or complete:

##+js(set, sf1Sentinel, undefined)

##+js(nostif, sf2Sentinel)

>>##+js(set, sf3Sentinel, undefined)

##+js(jsonl-edit-xhr-response, b)

##+js(jsonl-edit-fetch-response, b)

##+js(trusted-prevent-dom-bypass, Node.prototype.appendChild, Element.prototype.getElementsByTagName)

Lowly generic cosmetic filters

• filtering mode in popup panel is no filtering, basic, or optimal:
• filtering mode in popup panel is complete:

###gcf #gcf1 .fail

Exception filters

• All filtering modes:

#@##ef #gcf2 .fail

@@/bnf3\.js$/$from=…

[very long URL]

Firefox MV2 uBO-only tests

• These tests are only valid for Firefox MV2 uBO as they require capabilities not available in Chromium-based browsers or in MV3 framework

/sample.json|$xhr,replace=json:..price=0,to=…

…/test-filters.html##^#ffubo2 > script