What is a permalink? Definition, structure and tips

A permalink is the permanent, lasting URL of a specific page or blog post. The word comes from “permanent link”: an address that is meant to stay the same forever, so that people and search engines always find your page in the same place. In this article you will read what a permalink is, how to build one and why you are better off never changing it lightly.

What is a permalink exactly?

Every page on your website has its own web address. The permalink is that fixed address of one specific page or article, for example yourcompany.be/blog/b2b-lead-generation. Unlike a temporary or dynamic link (with session IDs or parameters), a permalink is stable and readable.

The term is mostly used in content management systems such as WordPress, where you decide the “permalink structure” in the settings: the pattern your URLs are automatically built from. Think of /blog/title-of-the-post instead of /?p=123. Ideally you make that choice once, when the site is set up.

Here are the most common structures side by side:

For most B2B sites, “post name” or “category plus name” is the safest choice: short, readable and without a date that makes the URL age. In practice a permalink is a specific kind of SEO-friendly URL. The rules that apply there apply here too. To see how a clean URL foundation fits into a broader approach, take a look at our SEO.

How do you build a good permalink?

A strong permalink is short, clear and descriptive. A few concrete guidelines:

• Keep it short and readable. A few words that describe the content is enough.
• Use hyphens. Separate words with a hyphen (-), not with an underscore. Search engines read a hyphen as a word separator.
• Lowercase only. Capital letters can lead to duplicate URLs.
• Put your most important keyword in it. Not forced, just the word the page wants to be found for. That word in the URL is called the slug.
• Leave out redundant words. Stop words such as “the”, “and” or “of” can usually go.

A handy rule of thumb: if you can read the permalink out loud over the phone without spelling it, you are on the right track. Google describes the same principle in its documentation on URL structure: use simple, descriptive URLs with words instead of long IDs and parameters.

An example from B2B practice

A classic scenario: a company moves from an old WordPress site with the structure /?p=451 to a new site with readable permalinks such as /services/accounting-software. An improvement in itself, but every old /?p= link (in quotes, emails, and the mentions you gathered over the years) points to nothing after the migration.

In practice we see that this kind of move goes wrong when nobody makes a redirect plan. The pages are there, but the link equity and the traffic disappear because the old addresses are dead ends. Anyone who neatly redirects every old permalink to the new one keeps virtually all of that value. That is exactly why we map the URLs first during a relaunch.

Common mistakes

The pitfalls we come across most often:

• Changing the permalink structure on an existing site. One click in the WordPress settings changes all your URLs at once. Never do this without redirects.
• Working without a redirect plan during a migration. Without an old-to-new list you lose traffic you will never see again.
• Putting the date in the structure. A date permalink forces old but still valuable content into an outdated jacket.
• Forgetting to update the internal links and sitemap. Redirects catch visitors, but direct links and an up-to-date sitemap keep the site clean.

Why should you never change a permalink lightly?

This is the most important point. There is a reason “permanent” is in the name. If you change a permalink without the right measure, every existing link to that page suddenly points to a 404 error page: shared posts, links in old emails, mentions on other sites, and the backlinks you gathered over the years. Their value leaks away.

If you do have to change a permalink, for example during a migration or a rebranding, then:

1. Put a 301 redirect from the old URL to the new one.
2. Update your internal links so they go straight to the new URL.
3. Update your sitemap and submit it again.

Honestly: how much attention does this deserve?

We would rather say it up front. For most B2B sites a good permalink structure is low-hanging fruit that you set up once and then leave alone. If your permalinks are already short and logical, do not go “optimising” them for an imaginary ranking advantage. The risk of broken links is bigger than the gain.

A tidy permalink mainly helps your visitor and the trust in the search results. Do not count on a ranking jump from it. Point your attention at content, authority and conversion instead, because that is where the revenue is. If you want to review your broader URL foundation, that belongs in your technical SEO.

Ready to get your technical foundation in order?

Permalinks and URL structure are exactly the kind of work we love: do it right once and then tick it off. We are a small team that moves fast, focused on B2B, and we tell you honestly when something is not worth the effort.

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Frequently asked questions

What is the difference between a permalink and a slug?

The permalink is the full, permanent URL of a page. The slug is only the last, descriptive part of it (the bit after the final forward slash). The slug is therefore part of the permalink.

Can I still change my permalink structure in WordPress?

Technically yes, but do not do it lightly on an existing site. If you change the structure, all your URLs change and you break links unless you set up a 301 redirect for every old URL. If duplicate addresses appear, a canonical tag helps settle which version counts.

Does my keyword have to be in the permalink?

Preferably yes, but without forcing it. The effect on rankings is small; the gain lies mainly in readability and trust. Just put in the word the page wants to be found for.

What is a good permalink length?

Short. Aim for a handful of words, roughly 50 to 60 characters for the whole URL. Long enough to be descriptive, short enough not to be cut off in the search results.