JavaScript SEO
A hands-on test of how JavaScript affects content visibility, crawlability and internal links, using before-and-after rendering evidence.
The problem
On JavaScript-heavy pages, text and navigation links can appear for visitors but be missing from the raw HTML, so search engines may not index that content or follow those links. I compared source and rendered pages to find which priority content and links were at risk.
Research & diagnosis
I built a test page whose content depends on JavaScript and compared the rendered page with the raw page source. I also tested how internal links behave when JavaScript renders them.
Strategy
I treated the question as one of risk: which priority content and links exist only after rendering, and so may not be indexed or followed. I recorded before-and-after evidence to show the visibility impact.
The solution
I tested rendered versus source content and internal-link behavior to understand the visibility impact.
What I implemented
- Built a test page whose content depends on JavaScript.
- Compared rendered content with the page source.
- Tested how internal links behave when they are rendered by JavaScript.
- Recorded before-and-after evidence of the visibility impact.
Illustrative targets
These figures are planning targets for this concept or independent project, not measured client results.