Martin Splitt

★★★ Is it true that Google ignores JavaScript rendering if your noindex tag appears in the initial HTML?

If a page contains a meta robots noindex tag in the initial HTML, Google will not render the page, even if JavaScript later modifies that directive. Google considers that the page does not want to be ...

Nov 25, 2020 ⚡ Analysis available

★★★ Does Google really compare the initial HTML AND rendered content for canonicalization?

Canonicalization and deduplication start with the initial HTML but also consider the rendered HTML. Google compares the content hashes of the initial HTML and the rendered HTML. If the hashes differ a...

Nov 25, 2020 ⚡ Analysis available

★★ Are GET APIs really cached by Google just like any other resource?

Google caches resources fetched from APIs in the same way as other resources if they use the GET method. However, POST requests are not cached....

Nov 25, 2020 ⚡ Analysis available

★★★ Does Google really index all pages after JavaScript rendering?

Contrary to popular belief, there aren't really two ways to index. Google processes the initial HTML, then decides to render the page, and then indexes it. Almost 100% of pages are rendered before bei...

Nov 25, 2020 ⚡ Analysis available

★★★ How do your failing APIs sabotage your Google indexing?

If an API fails during rendering, Google may not see the content coming from the API and could potentially group different URLs into duplication clusters due to those failures. It is crucial to have m...

Nov 25, 2020 ⚡ Analysis available

★★ Are structured data on noindexed pages really lost to Google?

Google probably does not take into account structured data on pages marked noindex, as the processing halts before it analyzes the structured data. Regarding link extraction, it can happen in parallel...

Nov 25, 2020 ⚡ Analysis available

★★★ Does Google really render ALL JavaScript, even without initial server-side content?

Google renders practically all JavaScript pages. The presence of initial server-side content does not influence the decision to render or not render a page's JavaScript. A heuristic exists for certain...

Nov 25, 2020 ⚡ Analysis available

★★ How can you ensure that Googlebot is genuinely Googlebot and not an imposter?

Many fake bots claim to be Googlebot. You must always verify that requests come from authentic Google IP addresses, as anyone can declare themselves as Googlebot in server logs....

Nov 25, 2020 ⚡ Analysis available

★★★ Is it true that Google actually limits CPU time during JavaScript rendering?

Google limits CPU time during JavaScript rendering, primarily to detect infinite loops and faulty code. Optimization should focus on user performance rather than a specific technical limit, as these t...

Nov 25, 2020 ⚡ Analysis available

★★★ Why does Google display empty pages even when your JavaScript site is working perfectly?

If a JavaScript request to an API (like /api/cats) is blocked by robots.txt, Googlebot will not be able to load it even if it works in browsers. Browsers ignore robots.txt, but Google respects it, whi...

Nov 25, 2020 ⚡ Analysis available

★★★ Can blocking JavaScript really stop Google from indexing all the content on your pages?

If JavaScript code blocks the rendering of part of the page and never completes its execution, Google will stop rendering. The content that this JavaScript was supposed to load and any following HTML ...

Nov 25, 2020 ⚡ Analysis available

★★★ How long does Googlebot really wait for JavaScript rendering?

There is no specific deadline that Googlebot expects for JavaScript rendering. The recommendation is to render content as quickly as possible. If loading takes several seconds, it is already problemat...

Nov 25, 2020 ⚡ Analysis available

★★ Does AJAX really work for SEO, or should you think twice before using it?

AJAX requests add complexity to SEO because they create more potential failure points (robots.txt, network errors, etc.). While they work if correctly implemented, they are not fantastic for SEO and r...

Nov 25, 2020 ⚡ Analysis available

★★★ Why does Google refuse to render JavaScript if the initial HTML contains a meta noindex?

If a noindex robots meta tag is present in the initial HTML, Google will not render the JavaScript page because the instruction already indicates that the page does not want to be indexed. Be careful ...

Nov 25, 2020 ⚡ Analysis available

★★ Has dynamic prerendering become a trap for indexing?

Dynamic prerendering solutions like prerender.io add latency, can crash, and require caching. If hashed JavaScript or CSS resources in the name become inaccessible due to outdated cache, the content m...

Nov 25, 2020 ⚡ Analysis available

★★ Could your deleted resources be harming your pre-render indexing?

When using cached pre-render solutions, it is essential to keep old versions of assets (JavaScript, CSS) available long enough to prevent the cached HTML from referencing resources that no longer exis...

Nov 25, 2020 ⚡ Analysis available

★★★ Is it true that Google really analyzes everything in the initial HTML before rendering?

Google analyzes the initial HTML to extract links (to add to the crawl queue), detect HTTP errors, and read meta tags (canonical, description, robots). Canonicalization begins in the initial HTML but ...

Nov 25, 2020 ⚡ Analysis available

★★★ Could a 404 page with JavaScript lead to the complete deindexing of your site?

If a page returns an HTTP 404 status code, Google treats it as an error even if JavaScript would subsequently load content. Using a 404 page to load content via JavaScript leads to the complete deinde...

Nov 25, 2020 ⚡ Analysis available

★★★ Does Google really catch duplicate content after JavaScript rendering?

Google computes content hashes on the initial HTML for deduplication, but subsequently compares these hashes with those obtained after JavaScript rendering. The final decision regarding duplication an...

Nov 25, 2020 ⚡ Analysis available

★★★ Does Google really render 100% of JavaScript pages before indexing?

Contrary to common belief, practically all pages (almost 100%) are rendered in JavaScript before being indexed. There aren't really two distinct indexing paths. Google processes the initial HTML and t...

Nov 25, 2020 ⚡ Analysis available