Slug: definition
A slug is the readable part of a URL that identifies a page, article or product, usually derived automatically from its title.
A technical detail that affects SEO
When a product is called “Solid Wood Chair”, its slug typically becomes solid-wood-chair: the title is lowercased, accents removed, spaces replaced with hyphens. This mechanism shows up both in PrestaShop's product URL rewriting and in the slug field of a WordPress post, usually editable from the content editing screen.
The slug has a direct impact on SEO, since search engines use it to understand what a page is about: a clear slug containing relevant keywords is worth more than an opaque numeric identifier. Once a product is indexed with a given slug, changing it changes the full URL: useful for fixing a mistake, but it requires a redirect so the SEO value built up on the old address isn't lost.
Frequently asked questions
Can the slug of a product already live be changed freely?
Does the slug have to match the title exactly?
Can a slug contain digits or capital letters?
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