Lighthouse
Developer ToolsFree
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
4.4334 reviews1M+
View Extension
Tag Assistant
The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
Tag Assistant screenshots
Overview
We’re grateful for your feedback—we've listened and will be updating and bringing back the on-page debugging experience. More exciting features are on the way. Tag Assistant helps you install and troubleshoot your Google tags, including Google Analytics, Google Ads, Tag Manager and more. When clicked, the extension displays the Google tags found on the page in a side-panel. Just navigate to any page, and Tag Assistant will tell you which tags are present. We will be adding additional diagnostics in the near future. The “Troubleshoot” button activates our debug mode using tagassistant.google.com. This advanced tool allows you to debug your website, including iframes, within a single session, providing detailed diagnostics to help you validate, diagnose, and resolve your implementation. Session data is available for review on tagassistant.google.com. COMING SOON: Step-by-step guidance to install tags on popular website builders. By installing this extension, you agree to the Google Terms of Service and Privacy Policy at https://www.google.com/intl/en/policies/.
Pros
Cons
Who should use Tag Assistant?
Pricing
Tag Assistant is free. There is no paid tier to consider.
Similar extensions
Take Webpage Screenshots Entirely - FireShot
Developer ToolsFree
Take FULL webpage screenshots. Capture, edit and save them to PDF/JPEG/GIF/PNG, upload, print, send to OneNote, clipboard or email.
4.851,800 reviews3M+
View Extension
Wappalyzer
Developer ToolsFreemium
Identifies the technology stack behind any website.
4.62,000 reviews3M+
View Extension
QR Code (Generator and Reader)
Developer ToolsFree
Generate QR Code from the url of current page, link or selected text. And decode QR Code in image.
3.8169 reviews100K+
View Extension
JSON Formatter
Developer ToolsFree
Makes raw JSON responses readable in the browser.
4.32,100 reviews2M+
View Extension
Font Finder
Developer ToolsFree
An easy-to-use font inspector to get CSS styles of the selected element
4.5228 reviews400K+
View ExtensionFrequently asked questions
Is Tag Assistant free?
Yes, Tag Assistant is free to use.
Is Tag Assistant safe to install?
Tag Assistant is published by Google Ireland, Ltd.. As with any extension, review the permissions it requests before installing and remove it if you stop using it.
What are the best Tag Assistant alternatives?
Browse the Developer Tools category for comparable options.
Related extensions to Tag Assistant
Picked from the Developer Tools category and the tags tag, assistant — jump straight to the alternatives and head-to-head pages people open next.
Best Developer Tools Chrome extensionsLighthouse alternativesLighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.Take Webpage Screenshots Entirely - FireShot alternativesTake FULL webpage screenshots. Capture, edit and save them to PDF/JPEG/GIF/PNG, upload, print, send to OneNote, clipboard or email.Wappalyzer alternativesIdentifies the technology stack behind any website.QR Code (Generator and Reader) alternativesGenerate QR Code from the url of current page, link or selected text. And decode QR Code in image.Wappalyzer vs JSON FormatterEssential developer Chrome extensions?React Developer Tools vs WappalyzerReact Developer Tools or Wappalyzer: which should I install?React Developer Tools vs JSON FormatterReact Developer Tools or JSON Formatter: which should I install?Monica vs PerplexityWhich AI extension gives sourced answers?All Developer Tools extensionsEvery developer tools extension in the directory, ranked.
Compare Tag Assistant with the obvious rivals
Side-by-side feature tables, pricing and a clear recommendation.
Wappalyzer vs JSON FormatterStack detection for recon work against readable API responses in the browser.React Developer Tools vs WappalyzerBoth are developer tools extensions people shortlist together — see how ratings, install base, pricing and day-to-day use differ.React Developer Tools vs JSON FormatterBoth are developer tools extensions people shortlist together — see how ratings, install base, pricing and day-to-day use differ.Tag Assistant alternativesRanked replacements if Tag Assistant is not the right fit.All comparisonsThe full compare hub, grouped by category.
Shortlists that include this category
Best Productivity Chrome ExtensionsThe 10 best productivity Chrome extensions in 2026, ranked with live store ratings and install counts. Includes what each is best for and the permissions to check.Best AI Chrome ExtensionsThe best AI Chrome extensions for writing, research and productivity — Monica, Merlin, ChatGPT for Google and more, ranked by usefulness.Best SEO Chrome ExtensionsThe best SEO extensions for Chrome — Ahrefs, MozBar, SEOquake and more, ranked by metrics, audits and ease of use.Best Privacy Chrome ExtensionsThe 9 privacy Chrome extensions worth installing in 2026 — ad blocking, tracker blocking and password vaults, with live store ratings and permission warnings.Best Tab Manager Chrome ExtensionsThe 7 best Chrome tab managers in 2026, compared: collapse tabs to free memory or save restorable workspaces. Live store ratings, install counts and trade-offs.Best Free Chrome Extensions12 genuinely free Chrome extensions — no trial, no locked core feature. Live store ratings and install counts, plus the permissions to check before installing.Best Password Manager Chrome ExtensionsThe best password manager extensions for Chrome in 2026 — Bitwarden, LastPass, 1Password and more, ranked by security, free tier and sync.Best Ad Blocker Chrome ExtensionsThe best ad blockers for Chrome in 2026 — uBlock Origin, Adblock Plus, AdGuard and Ghostery compared on blocking power, memory use and privacy.Best Tab Manager Chrome ExtensionsTame tab overload with the best tab manager extensions for Chrome — OneTab, Toby, Session Buddy and more, ranked by memory savings and organization.Best Screenshot Chrome ExtensionsThe best screenshot extensions for Chrome — GoFullPage, FireShot, Awesome Screenshot and more for full-page captures, annotation and recording.Best VPN Chrome ExtensionsThe best VPN extensions for Chrome — VeePN, Browsec, CyberGhost and more, ranked by speed, privacy and free tier.Best Bookmark Manager Chrome ExtensionsOrganize your links with the best bookmark manager extensions — Raindrop.io, Pocket, Google Keep and more, ranked by features.Best Note Taking Chrome ExtensionsCapture ideas fast with the best note-taking Chrome extensions — Notion, Evernote, Google Keep and Obsidian tools.Best Reading Chrome ExtensionsRead faster and cleaner with the best reading extensions — Reader View, Read Aloud, Pocket and more.Best Focus & Productivity Chrome ExtensionsBlock distractions and get more done with the best focus extensions — StayFocusd, Forest, OneTab and more.Best Screen Capture Chrome ExtensionsCapture screenshots and record your screen with the best Chrome extensions — FireShot, Screencastify and more.Best Privacy & Security Chrome ExtensionsProtect your privacy with the best Chrome extensions — ad blockers, tracker blockers and password vaults, ranked.Best Writing Chrome ExtensionsWrite better everywhere with the best writing extensions — Grammarly, LanguageTool, Text Blaze and more.Best Developer Chrome ExtensionsEssential Chrome extensions for developers — JSON tools, Markdown viewers, web scrapers and more.