Should you really optimize URLs with keywords to improve your ranking?

Why does Google downplay the weight of keywords in URLs?

John Mueller's statement puts an end to a debate that has lingered for years in the SEO community. Keywords in URLs have long been seen as a must-have optimization factor, to the point where some practitioners would rewrite their entire structure to inject their target terms.

The reality is more nuanced. Google does take into account the words present in the URL as a weak contextual signal, just as it analyzes breadcrumbs or site structure. However, this signal weighs infinitely less than page content, backlinks, or satisfied search intent.

What exactly do we mean by “weak factor”?

A weak ranking factor means its impact on positions is negligible in most cases. Google has hundreds of signals to evaluate a page. Descriptive URLs can marginally help to understand the subject of a page even before crawling it, but this assistance becomes anecdotal once the engine accesses the actual content.

Specifically, a URL like /chaussures-running-homme will have no measurable advantage over /produit-12345 if the page content, user signals, and backlinks are identical. The semantic context provided by the URL is overshadowed by far more powerful signals.

How can rewriting URLs cause more problems than solutions?

Changing an established URL structure triggers a cascade of technical risks. Each changed URL requires a 301 redirect, which slightly dilutes the PageRank passed and may temporarily disrupt indexing. On a site with 10,000 pages, the risk of configuration errors skyrockets.

Poorly managed redirects generate redirect chains, loops, or orphaned pages. The crawl budget is wasted unnecessarily following these paths. Not to mention the potential loss of backlinks if redirects are not correctly mapped, or third-party tools (analytics, tracking pixels) that might break.

• Marginal signal: Keywords in URLs remain a ranking factor, but their weight is negligible compared to content and backlinks
• Technical risks: Rewriting URLs involves 301 redirects, risk of chains, PageRank dilution, and potential temporary de-indexing
• Unfavorable cost/benefit: The time and resources required for URL restructuring could be better invested in more impactful levers
• Limited semantic context: Google extracts the context of a page mainly through its content, backlink anchors, and internal structure
• Viable exception: For a new site, properly structuring URLs from the start remains a good architectural practice without risk

Is this position from Google consistent with on-the-ground observations?

Yes, and the data has confirmed this for several years. A/B testing on e-commerce sites shows that URL rewriting without any other changes does not lead to significant organic traffic gains. Sites with generic URLs like /p/SKU can perfectly dominate their SERPs if their content and authority are strong.

What really matters is the overall semantic coherence: title, H1, content, internal linking, anchors. The URL is the weakest link in this chain. Agencies that have migrated thousands of pages while only changing URLs often report stagnation or even a temporary decline due to technical disruptions.

In what specific cases can keywords in URLs still play a role?

For ultra-specific niche queries with very little competition, a descriptive URL can make a difference if all other factors are strictly equivalent between two pages. But this scenario is rare. We’re talking about micro-gains in contexts where the SEO battle is fought at the ranking unit level.

The other case involves exact match domains (partial EMDs) where the keyword appears in the domain name itself. Historically, the impact has been stronger, although Google has significantly reduced this weight through successive updates. [To be verified]: Recent public data on the actual impact of partial EMDs remains vague and contradictory.

What nuances should be added to this recommendation?

Mueller talks about artificial rewriting, not clean initial structure. For a new site, no one is saying that cryptic URLs should be generated. Creating a readable structure such as /categorie/sous-categorie/produit from the start remains a good UX and architectural practice.

The real trap is over-optimization: injecting 5 keywords into a URL to try to artificially inflate the signal. Google detects these patterns and may even consider them spam. A URL must be descriptive for the user, not stuffed with keywords for bots.

What should I do if my current URLs don't contain keywords?

Nothing. Absolutely nothing if your site is performing well. A URL like /article-742 or /p/XYZ123 does not penalize you. Google extracts the semantic context of your pages through their content, titles, internal links, and backlinks. Modifying these URLs would create a heavy technical ordeal for no gain or negative results.

If you are launching a new site or new sections, take the opportunity to structure clean and readable URLs. But on an established site with history and authority, touching the URLs can be like playing Russian roulette with your indexing.

What levers should I prioritize instead of rewriting URLs?

Invest your time on what really moves positions. The quality and depth of content remain the number one lever: better responding to search intent than the competition, structuring with logical Hn, and integrating enriched data. Quality link building remains an essential pillar for gaining authority.

On the technical side, focus on loading speed, Core Web Vitals, crawl budget, and internal linking architecture. These elements have measurable and documented impacts on ranking. A second gained in loading time or an improvement in CLS can shift positions, unlike a rewritten URL.

How can I structure URLs for a new project without falling into over-optimization?

Adopt a clear hierarchy logic: /categorie/sous-categorie/titre-page. Use hyphens to separate words, avoid underscores. Limit yourself to 3-5 words maximum in the final slug, prioritizing human readability over keyword stuffing.

Ban long URLs stuffed with stop words like /meilleur-chaussure-running-homme-pas-cher-2025. A URL like /chaussures-running/homme/modele-x is more than sufficient. Google understands the context via the page itself, not through a URL novel.

• Do not touch the URLs of an established site without a compelling technical reason (platform migration, total redesign)
• For a new site, structure readable and logical URLs from the start: 3-5 words max, hyphens as separators
• Avoid keyword stuffing in slugs: prioritize clarity for the user
• If migration is unavoidable, map each old URL to its new one with permanent 301s, test thoroughly
• Monitor Search Console for 3 months post-migration: errors 404, crawl declines, de-indexing
• Focus your SEO efforts on content, link building, and technical aspects (speed, CWV, internal linking)