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Remove ad network clutter #308

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44 changes: 44 additions & 0 deletions src/constants.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -109,15 +109,42 @@ export const EXACT_SELECTORS = [

// ads
'.ad:not([class*="gradient"])',
'.adsbygoogle',
'ins.adsbygoogle',
'[class^="ad-" i]',
'[class$="-ad" i]',
'[class*="gpt-ad" i]',
'[class*="-ad-" i]:not([class*="gradient"])',
'[class^="ads-" i]',
'[class$="-ads" i]',
'[data-ad-wrapper]',
'[data-ad-client]',
'[data-ad-host]',
'[data-ad-slot]',
'[data-ad-format]',
'[data-full-width-responsive]',
'[id^="ad-" i]',
'[id$="-ad" i]',
'[id*="div-gpt-ad" i]',
'[id*="gpt-ad" i]',
'[id*="-ad-" i]',
'[id^="ads-" i]',
'[id$="-ads" i]',
'[role="banner" i]',
'[alt*="advert" i]',
'[aria-label*="advertisement" i]',
'[aria-label*="advertising" i]',
'[data-sponsored]',
'.promo',
'.Promo',
'[class*="promoted" i]',
'[id*="promoted" i]',
'[class*="outbrain" i]',
'[id*="outbrain" i]',
'[class*="revcontent" i]',
'[id*="revcontent" i]',
'[class*="taboola" i]',
'[id*="taboola" i]',
'#barrier-page', // ft.com
'.alert',
'[rel="sponsored" i]',
Expand Down Expand Up @@ -252,8 +279,19 @@ export const EXACT_SELECTORS = [
// iframes
'instaread-player',
'iframe:not([src])',
'iframe[src*="adnxs.com"]',
'iframe[src*="adservice.google."]',
'iframe[src*="adsystem.com"]',
'iframe[src*="amazon-adsystem.com"]',
'iframe[src*="blink.net"]',
'iframe[src*="doubleclick.net"]',
'iframe[src*="giscus.app"]',
'iframe[src*="googleadservices.com"]',
'iframe[src*="googlesyndication.com"]',
'iframe[src*="googletagservices.com"]',
'iframe[src*="outbrain.com"]',
'iframe[src*="securepubads.g.doubleclick.net"]',
'iframe[src*="taboola.com"]',
'iframe[src*="tinypass.com"]',
'iframe[src*="trinitymedia.ai"]',

Expand All @@ -267,6 +305,12 @@ export const EXACT_SELECTORS = [
'#Newsletter',
'.subscribe',

// ad network widgets
'amp-ad[type="adsense" i]',
'amp-ad[type="doubleclick" i]',
'amp-embed[type="adsense" i]',
'amp-embed[type="doubleclick" i]',

// Substack inline clutter
'[data-component-name="ButtonCreateButton"]',
'[data-component-name="DigestPostEmbed"]',
Expand Down
67 changes: 67 additions & 0 deletions tests/ad-removal.test.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,67 @@
import { describe, expect, test } from 'vitest';
import { Defuddle } from '../src/node';
import { parseDocument } from './helpers';

describe('Ad removal', () => {
test('removes Google ad slots and ad network iframes from extracted content', async () => {
const html = `<!DOCTYPE html>
<html>
<head>
<title>Article with ads</title>
<meta name="description" content="A test article with ad slots.">
</head>
<body>
<main>
<article>
<h1>Article with ads</h1>
<p>This article contains a real opening paragraph with enough text for the extractor to identify it as the main content.</p>
<ins class="adsbygoogle" data-ad-client="ca-pub-123" data-ad-slot="456"></ins>
<div id="div-gpt-ad-123">
<iframe src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></iframe>
</div>
<p>The second paragraph should remain after the advertising slots have been removed from the extracted result.</p>
<iframe src="https://pagead2.googlesyndication.com/pagead/html/r20240501/r20190131/zrt_lookup.html"></iframe>
</article>
</main>
</body>
</html>`;

const result = await Defuddle(
parseDocument(html, 'https://example.com/article-with-ads'),
'https://example.com/article-with-ads'
);

expect(result.content).toContain('The second paragraph should remain');
expect(result.content).not.toContain('adsbygoogle');
expect(result.content).not.toContain('div-gpt-ad');
expect(result.content).not.toContain('doubleclick.net');
expect(result.content).not.toContain('googlesyndication.com');
});

test('removes sponsored recommendation widgets without removing unrelated words', async () => {
const html = `<!DOCTYPE html>
<html>
<head><title>Roadmap article</title></head>
<body>
<article>
<h1>Roadmap article</h1>
<p class="roadmap">Roadmap should stay because this class is part of the article content rather than an ad marker.</p>
<p id="shadow-adventure">Adventure should stay because the id only contains the letters ad inside a larger word.</p>
<div class="taboola-widget">Sponsored links from around the web</div>
<div class="outbrain-module">Promoted stories</div>
<p>The article conclusion should remain in the extracted content after sponsored widgets are removed.</p>
</article>
</body>
</html>`;

const result = await Defuddle(
parseDocument(html, 'https://example.com/roadmap-article'),
'https://example.com/roadmap-article'
);

expect(result.content).toContain('Roadmap should stay');
expect(result.content).toContain('Adventure should stay');
expect(result.content).not.toContain('Sponsored links from around the web');
expect(result.content).not.toContain('Promoted stories');
});
});