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Slug Checker

Paste a slug (or one per line) to validate common SEO-friendly rules: lowercase, allowed characters, hyphen formatting, and length. You’ll get a clear pass/fail, issues found, and a suggested fixed slug.

Category: Text · URL: /tools/slug-checker.html
Input (slug or one per line)
Examples: hello-world, product-name-2026
Related tools: Online Slug Generator · URL Slug Checker · Online Case Generator · Online Diff Generator
Output
Shows validity, issues, and a suggested cleaned slug.
Run Check to see results.
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

How to use

  1. Paste your slug(s) into the input (one per line for bulk checking).
  2. Set options (ASCII-only and max length) if needed.
  3. Click Check to validate and see issues + suggestions.
  4. Click Fix & Replace to overwrite the input with the suggested slug(s).
Keywords this page targets (natural cluster): slug checker, check slug validity, validate url slug, seo slug checker, slug format checker, url slug validator, slug lint tool, fix slug formatting, remove invalid slug characters, convert text to valid slug, slug length checker, hyphenated slug checker, no double hyphen slug, trim hyphens slug, ascii slug checker, clean permalink slug, wordpress slug checker, shopify slug validator, multi slug checker, validate permalink segment
Secondary intents covered: Confirm a slug only uses allowed characters, Find why a slug fails (spaces, underscores, uppercase, symbols), Generate a corrected slug suggestion, Enforce a maximum slug length, Batch-check multiple slugs (one per line), Copy cleaned results quickly, Keep slugs consistent across pages and CMS exports, Detect double hyphens and leading/trailing hyphens

FAQ

What counts as a valid slug here?

By default: lowercase letters, numbers, and hyphens only, no leading/trailing hyphen, no double hyphens, and within the max length.

Can I check multiple slugs at once?

Yes—paste one slug per line and click Check.

Does this tool generate a new slug or only validate?

It does both: validation plus a suggested “fixed” slug, and Fix & Replace can overwrite your input with the suggestion.

What does ASCII-only mean?

ASCII-only removes accents/diacritics and limits characters to a-z, 0-9, and - (more consistent across platforms).

Should I allow slashes?

Only if you’re validating a path like category/product-name; for a single slug segment, keep it off.

Will this change my existing URLs automatically?

No—this runs client-side and only outputs suggestions; updating URLs and redirects is up to your CMS/server.

Is any text I paste sent to a server?

No—checking and fixes run in your browser; there are no network calls in the tool.