Description from extension meta
The Rendering Difference Engine by Gray Dot Co
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Description from store
๐ The Rendering Difference Engine highlights discrepancies between response HTML and rendered HTML. No more searching for the needle in your haystack.
โ Findings are grouped and reported based on elements that impact how search engines crawl, understand, and index the URL.
โ An intuitive, at-a-glance interface includes unique tabs for each SEO factor, showing exactly what changed:
โ๏ธ Crawling, Indexing, & Metadata
๐ Headings
๐ Links
๐
Media
๐ Page copy
โ The โDifferenceโ tab shows the rendered HTML and highlights any differences.
โ You can export code and page copy, as well as highlight impacted links and media directly on the webpage.
๐ช Use the findings to facilitate a JavaScript audit and clearly document JS SEO issues for decision makers and developers.
Feedback:
If you think The Rendering Difference Engine is awesome, help us get the word out by rating it five starts. We welcome your suggestions, requests, and experiences at [email protected].
Privacy:
Once the extension is enabled in Chrome, thereโs no need to grant any additional permissions. The Rendering Difference engine does not collect or store personal data, or any other data, from the webpages you browse.
Latest reviews
- (2025-08-06) Mihir Naik: This is an extremely useful tool! Just tried it, just works. Great UI/UX. SEOs can easily identify what parts of the page is visible to bots only after JS rendering.
- (2025-08-05) Anne Berlin: A great addition to my SEO plugin game. Allows for quick discovery of if/what specific SEO-relevant fields are modified by JS. Love being able to instantly see how the body copy changes upon render, and what content is missing in raw source. This is increasingly important for website owners to know, as part of LLM readiness.
- (2025-08-04) Joelle Irvine: Absolutely love this extension! Iโve been using it non-stop since beta access. It's super helpful, especially for communicating JS issues to clients. Being able to visually show all the impacted content, links, and media makes those conversations a whole lot smoother. Thanks to a clean UI/UX, it's also very easy to use and start benefiting from the moment you start using it. Highly recommend!
- (2025-07-29) Kristina A: Such a useful extension. A must-have for any technical SEO audit ๐ช
- (2025-07-25) Colin: This was recommended from SEO friends, and even as a developer I find it really useful. Found some things wrong with my personal site, too - oops!
- (2025-07-25) Nick LeRoy: At first I downloaded this thinking its yet another "SEO extension" like the million others. But this one is different. Sure, it covers some of your basics that other tools do as well, but the magic (IMO) is really in the page copy/difference reports. Great stuff, Sam + Tory!
- (2025-07-24) Emma Russell: 10000/10 - really easy to visually see what's in or not in the HTML! Makes it a lot easier to communicate it to more junior members of the team and show them why client-side JS can be detrimental and is easier to show developers what you're talking about and why you're talking about it.
- (2025-07-14) Alexander Hess: What a great extension! I love that I can see the Javascript impact on the webpage, it helps me a lot with my and my clients' websites. What needs to be fixed is clear at a glance! And I'm not even a Tech SEO or Javascript expert. Can't even imagine the value they will get from this tool.
- (2025-07-14) Heather Kaeowichien: The Rendering Difference Engine is such a time saver and confidence booster! Before this tool, checking for JavaScript SEO issues was always cumbersome and difficult to know for sure (as a non-developer) if I was identifying the issue properly. This tools is clear and easy to use. My SEO QA time on potential JS issues is now a fraction of what it was. Share this SEO rendering checker with your engineering team too!
Statistics
Installs
630
history
Category
Rating
5.0 (9 votes)
Last update / version
2025-08-06 / 1.1
Listing languages
en-US