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For a new site, use a readable slug-only URL if you can enforce unique slugs and preserve old links when titles change. Keep the numeric ID as the database key. Include the ID in the public URL when stable identity or simpler collision-free routing matters more than a longer path. Neither format is universally faster: performance depends on the database, indexes, and workload.
Does a post ID make URLs faster or more scalable?
Not by itself. The 2013 SitePoint discussion that prompted this question compared looking up a post by numeric ID with looking it up by name, but it did not report a controlled benchmark. A participant, Jeff_Mott, wrote on February 12, 2013, that with a unique index on the post name, the two options were “virtually the same.” That is forum advice, not a measured result for every PHP/MySQL application.
For a fair comparison, consider the actual schema, indexes, queries, and workload. A public URL also does not have to match the database’s primary key: a site can keep an ID internally and publish a slug, or use the ID to find a record while displaying a descriptive slug.
How the URL formats compare
| Format | Strength | Trade-off |
|---|---|---|
/web-design/web-design-trends-in-2013/ |
Descriptive and readable to visitors. | The slug must be unique in its routing namespace; title changes require old-link handling. |
/283/web-design/web-design-trends-in-2013/ |
The ID can identify the record even if its title or slug changes. | The URL is longer and includes a number that may not help a visitor understand the page. |
The example formats are from the original SitePoint discussion; they illustrate the options, not a prescribed URL design.
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When slug-only URLs are a good choice
Choose a slug-only route when a clear, descriptive public address is your priority and you can reliably manage uniqueness and edits. A title is not necessarily unique, so the application needs a collision policy—for example, adding a disambiguating suffix—and storage should enforce the chosen uniqueness rule.
When a post’s title changes, keep its former slug or redirect its old URL to the current one. Without that handling, bookmarks and external links may stop working. Google Search Central recommends readable words rather than long ID numbers when possible, but does not say that removing IDs guarantees a ranking improvement.
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When to include the ID
An ID is useful when stable record identity across title changes, straightforward collision-free lookup, or a compact numeric route matters more to your application than keeping the path entirely descriptive. It can also support a hybrid URL such as /283/web-design-trends/: the application looks up post 283, while the slug gives readers context.
If the ID determines the record, treat the slug consistently. When a request uses an outdated or inaccurate slug, redirect to the one canonical URL for that post. Otherwise, several URL variants can display the same content.
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URL practices that apply to either format
- Use simple, intelligible paths and readable words where practical.
- Separate words in slugs with hyphens.
- Avoid parameters that do not change the content.
- Use consistent casing if the server treats case variants alike.
- Percent-encode reserved characters as required by URI syntax.
These are URL-structure recommendations from Google Search Central’s URL structure guidance, last updated December 10, 2025, and its cited IETF URI standard. Google’s advice concerns understandable URLs and crawlable structure; it does not promise a ranking boost from omitting an ID.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical decision
- Choose the public address: prefer a readable slug-only path if you can guarantee uniqueness and handle title changes.
- Keep identity separate: retain the numeric primary key in the database regardless of the public URL format.
- Use an ID when it solves a real routing need: if you select an ID-plus-slug route, let the ID identify the post and redirect alternate slug variants to the canonical path.
- Measure performance in your own application: compare the relevant indexed queries and workload rather than assuming one URL format is inherently faster.
The original comparison and its trade-offs appear in the SitePoint forum discussion from February 12, 2013. It offers no benchmark for a particular schema.
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