Rendered content
Compare the initial response, rendered DOM and indexed output so important copy, links and structured data are crawlable and available to search engines.
← Developer SEO
JavaScript SEO consultancy
Make your JavaScript site visible beyond the browser.
Technical SEO for JavaScript websites and web applications, covering rendering, crawlable routes, internal links, metadata and indexation.
JavaScriptRendering trace
01URL requestedServer response
→02JavaScript runsRendered DOM
→03Page understoodSearch-ready output
Content present
Links discoverable
Metadata consistent
Status code valid
Google can index JavaScript, but implementation still matters.
Google historically struggled to process JavaScript websites, which is why the idea that they cannot be indexed still persists. Google now renders JavaScript using a modern browser, but crawling, rendering and indexing remain separate steps. A page can look complete to a visitor while Google receives incomplete content, links or search directives.
JavaScript SEO audit scope
We test the system, not just the page.
We trace important URLs from the first crawl through rendering and into Google’s index. This shows developers where visibility breaks down, what needs changing and how to confirm that the fix worked.
Routes and links
Check that every valuable view has a stable URL and can be discovered through real anchor links rather than click events or URL fragments.
Metadata and directives
Validate titles, descriptions, canonicals, robots directives and schema in the output search engines actually process.
Lazy-loaded content
Test images, product results and infinite-scroll content so loading behaviour does not hide valuable pages or assets from crawlers.
Status codes and errors
Find soft 404s, client-side redirects and app-shell responses that return 200 when the server should communicate a clearer state.
Performance and resources
Identify blocked scripts, rendering failures and unnecessary client work that delay useful content for users and search engines.
Rendering strategy
Choose rendering around the page’s job.
Search-critical content should be reliable, fast and testable. We help your team choose where static generation, server-side rendering, hydration or client-side rendering makes sense without defaulting to an expensive platform rebuild.
Dynamic rendering for bots is a workaround, not our default recommendation. We prefer durable rendering patterns that serve users and search engines consistently.
Clear recommendations
Clear fixes you or your developer can act on.
You receive more than a list of technical errors. We explain what is going wrong, which pages are affected, why it matters for search and how to check that each fix has worked.
How each page behaves
A clear explanation of what is available when a page first loads, what appears after JavaScript runs and where important content or links may be missed.
Clear fixes in priority order
Practical actions for you or your developer, showing which pages are affected, what needs to change and how to confirm the fix works.
The right way to load each page
Guidance on whether important content should be prepared before a visitor arrives or loaded in the browser, based on what the website actually needs.
Checks before and after launch
Testing on important pages before release and again on the live website to make sure content, links and search information still work properly.
How the engagement works
From evidence to release.
- 01Diagnose
Review templates, rendering, crawl data and platform constraints.
- 02Specify
Turn the findings into prioritised fixes and acceptance criteria.
- 03Support
Work with developers through questions and implementation choices.
- 04Verify
Retest the rendered output and production release.
Problems we regularly find
Common JavaScript SEO problems
These issues are not inevitable, but they are easy to miss when a site is being built or changed quickly.
Google renders an incomplete page
Google can run JavaScript, but blocked files, failed requests or delayed content can leave the rendered HTML without the copy and links needed for indexing.
Links are not crawlable
Buttons or scripted interactions replace normal links, leaving useful pages difficult for search engines to discover.
Errors look like valid pages
Missing or broken routes return a successful response and a generic interface instead of an accurate status.
Search directives change after rendering
Canonical, robots or metadata values are inserted or overwritten in ways that produce conflicting signals.
JavaScript SEO questions
What development teams ask us.
Clear answers before a rendering decision becomes an expensive rebuild.
Can Google crawl and index JavaScript websites?+
Yes. Google can execute JavaScript, but crawling, rendering and indexing are separate stages. Important content, links and directives still need to be available reliably in the rendered HTML, and other search engines may process JavaScript differently.
Is client-side rendering always bad for SEO?+
No. The risk depends on what the page relies on JavaScript to produce, how routes and errors behave, and whether essential content and links remain discoverable. We test the implementation before recommending a rendering change.
Do we need to move everything to server-side rendering?+
Not necessarily. Static rendering, server-side rendering and hydration can all be suitable. The right choice depends on content freshness, personalisation, infrastructure and the pages that need organic visibility.
How do you test JavaScript SEO?+
We compare raw and rendered HTML, crawl the site with and without JavaScript, inspect routes and response codes, review Search Console evidence and test representative templates rather than relying on a single homepage check.
Building something that search needs to understand?
Bring search into the build before launch, or untangle what is already holding a modern website back.
30-minute consultation. No obligation.