Adam King

Joint founder & Director at | Creator of the JS SEO Checker Chrome Plugin

[Adam King @agking]

Introducing SEO JavaScript Checker - a Chrome extension, designed to compare the raw server HTML with the live, client-rendered DOM and highlight differences.

[Adam King @agking]

@rustybrick It turns out that the Weekly and Monthly views show the missing data more cleanly (but still joins March to June) - personally, I think I'd prefer the trend going to zero during the period of missing data instead of joining the two months up. It would be more honest.

[Adam King @agking]

What's wrong with this picture? Not sure if this is new or not, but take a look at this GSC screenshot.

The x-axis is from Feb. 2025 to June 2025, but the date range skips April and May completely, and the resulting trend lines join March straight to June! @rustybrick

[Adam King @agking]

@mikefutia SEO

[Adam King @agking]

I've heard many talks today at #BrightonSEO referencing how AI bots struggle with JS rendering. My new Chrome plug-in might help you all...
https://t.co/1KXcmnHIRj

[Adam King @agking]

This JS SEO plugin is me giving back to an industry that I've loved for over 20 years, and which has given me so much.

#SEO #JavaScriptSEO #TechnicalSEO #ChromeExtensions #SearchEngineOptimization #SEOTools #WebsiteAudits #SiteHealth #Indexation

https://t.co/wLu8ekxWfP

[Adam King @agking]

Introducing SEO JavaScript Checker - a Chrome extension, designed to compare the raw server HTML with the live, client-rendered DOM and highlight differences.

[Adam King @agking]

If you like the SEO JS Checker, please help spread the word by liking and sharing the 1st post of this thread:

https://t.co/nX5UzwB9y2

[Adam King @agking]

Introducing SEO JavaScript Checker - a Chrome extension, designed to compare the raw server HTML with the live, client-rendered DOM and highlight differences.

[Adam King @agking]

Introducing SEO JavaScript Checker - a Chrome extension, designed to compare the raw server HTML with the live, client-rendered DOM and highlight differences.

[Adam King @agking]

If you care about how your pages are understood by both search engines and AI crawlers, this helps bridge that gap.

Grab it from the Chrome Web Store now: https://t.co/1KXcmnHb1L

[Adam King @agking]

What it does
- Compares server vs. rendered HTML
- Flags changed, added, or removed elements
- Works on nearly any HTTPS page
- Exports reports for QA or documentation
- Lightweight, private, and built for real-world debugging - no dependencies, no data collection, no setup.

[Adam King @agking]

It highlights EVERY difference in head tags, visible text and links so you can immediately see what changed after JavaScript ran.

It’s awesome at debugging rendering parity issues and catching metadata regressions before they affect indexing or AI visibility.

[Adam King @agking]

I got tired of spending ages trying to determine what Google and emerging AI models like ChatGPT, Perplexity and Gemini actually see, so I built SEO JS Checker, a Chrome extension that compares the raw server HTML with the live, client-rendered DOM.

[Adam King @agking]

AI crawlers, particularly those associated with LLMs and AI-powered search engines, often encounter challenges with JS-heavy content. While advanced search engines like Google have made significant progress in rendering and understanding JS, many AI crawlers struggle.

[Adam King @agking]

More sites than ever rely on JavaScript frameworks like React, Next.js, Shopify front-ends, complex tag managers, and they often rewrite key HTML. That’s fine for users, but it creates uncertainty for both search engines and AI crawlers about what your page really contains.

[Adam King @agking]

Grab it from the Chrome Web Store now
https://t.co/1KXcmnHb1L

[Adam King @agking]

@screamingfrog FYI - I noticed that the "JavaScript: Pages with Blocked Resources" report didn't export. There are 127 instances shown in the UI. Trying to export just this report manually gives me the same "Export Failure" error as before.

[Adam King @agking]

@screamingfrog Hiya! I just upgraded to 21.4 and am now getting this when bulk exporting All Issues:

[Adam King @agking]

@screamingfrog Thanks @screamingfrog - I just sent the logs over to you. Let me know if you need anything else. :-)

[Adam King @agking]

@brodieseo Hey @samgipson congrats on making the list!

[Adam King @agking]

@PaulDavidMadden @ayima Ha! Will do! :-)