# The best Chrome extensions for marketers > Chrome extensions marketers use in 2026: save ads, check Meta and Google tracking, see site traffic and audit SEO, with costs checked on 2026-10-20. - **Author**: Marxx - **Published**: 2026-11-14 - **Category**: Ad research tools - **URL**: https://marxx.ai/library-best/best-chrome-extensions-for-marketers --- The best Chrome extensions for marketers do one of four jobs: save competitor ads, check your ad tracking, show a site's traffic, and audit SEO. Start with Meta Ads Data Advisor (formerly Meta Pixel Helper) and Google's Tag Assistant for tracking. Then add an ad-saving extension such as Foreplay or Marxx. ## Quick comparison | Extension | Use it to | Cost | Browsers | |---|---|---|---| | Meta Ads Data Advisor | Check your Meta Pixel | Free | Chrome, Edge | | Tag Assistant | Check Google tags and Tag Manager | No price shown on its store page | Chrome | | Foreplay | Save ads from ad libraries | Extension called free. Foreplay Basic $59 a month | Chrome | | Similarweb | See traffic for any site | Free to install and use | Chrome, Edge, Firefox, Opera | | Ahrefs SEO Toolbar | Check on-page SEO and Google results | Free. Some metrics need an account | Chrome, Firefox, Safari | Details read on each company's own pages on 2026-10-20. ## Check your tracking **Meta Ads Data Advisor.** Meta's page says it is formerly Meta Pixel Helper. Its Chrome Web Store listing says the extension updates automatically. An icon badge shows how many Pixel events fired on the page. Click it to check that the Pixel and each event loaded. Meta says it flags problems such as broken events and missing parameters, for example price or currency. Pair it with the [Conversions API guide](/guides/how-to-set-up-meta-conversions-api). **Tag Assistant.** Google's extension helps you troubleshoot gtag.js and Google Tag Manager. Google's help page says Tag Assistant Legacy and Tag Assistant Companion are now combined into one extension. Google says Tag Manager itself is free. For Google Ads conversions, see [how to set up Google Ads conversion tracking](/guides/how-to-set-up-google-ads-conversion-tracking). ## Save competitor ads **Foreplay.** Its homepage calls the extension free. Its pricing page lists saving from the Meta Ad Library, the TikTok Ad Library and Top Ads, the LinkedIn Ad Library and the Google Transparency Center, plus organic Instagram, TikTok and YouTube Shorts. Basic is $59 a month, or $49 a month billed yearly, with a 7-day free trial. A saved ad is the start of a [swipe file](/guides/how-to-build-a-swipe-file). The platforms' own libraries are free to search. See the [best free ad spy tools](/best/best-free-ad-spy-tools). ## Check a site **Similarweb.** Its page says the extension is free to install and use. It shows traffic over time, keywords, ranking, traffic sources by channel and traffic by country. Very small sites may return partial data, and historical data and advanced filters are in paid plans. **Ahrefs SEO Toolbar.** Free. It shows titles, meta descriptions, word count, headings and canonical tags, and lets you view Google results from another country. Domain Rating needs a free sign-in. Backlinks, estimated traffic and keyword rankings need a paid Ahrefs account. ## A worked example Say you spend INR 2,000 a day for 5 days, so INR 10,000, on a Purchase campaign. Then you find the Purchase event reaches Meta with no value. A two-minute test on your thank-you page with Meta Ads Data Advisor can flag broken events and missing parameters before you spend anything. ## How to choose 1. Install for a job you do every week, not for a feature you might use. 2. Check what each extension asks to read. An extension can request access to the pages you open. 3. Keep one tracking checker per platform, not three. We make Marxx. Its browser extension adds a Save button to the Meta, TikTok and LinkedIn ad libraries, Pinterest and Google Images. Marxx also tracks competitor ads on Meta and Google. See [competitor tracking](/features/competitor-tracking). ## FAQ ### Are Chrome extensions safe for ad accounts? Install only from the company's own link, and read the permissions. An extension can request access to the pages you open, which could include Ads Manager. Remove ones you no longer use. ### Do these work in other browsers? Some do. The table above lists the browsers each company's page names. ### Do I need a paid extension? Not to start. Meta, Similarweb and the Ahrefs SEO Toolbar are free. Pay only when saving and organising ads by hand costs you hours. --- - [More Ad research tools articles](https://marxx.ai/library-best/category/ad-research-tools) - [All articles](https://marxx.ai/library-best)