Ever copy a link full of percent codes, double hyphens, and tracking tags? The URL Slug Cleaner tidies those messy addresses. It turns dirty URLs or slug strings into plain, hyphenated slugs you can reuse.
It is built for people doing site migrations, redirect maps, or bulk cleanups. You paste one slug or URL per line, toggle a few rules, and the cleaned slugs appear next to your input.
Table of Contents
- What the Cleaner Does
- How to Use It, Step by Step
- How the Cleaning Rules Work
- Worked Example
- How Special Characters Are Handled
- Reading the Status Cards
- Limitations and Assumptions
- FAQs About the URL Slug Cleaner
What the Cleaner Does
The tool reads your input box line by line. It cleans each line with the rules you have checked and writes the results to the output box.
- Extract last path segment from full URL: drops the parent folders.
- Strip Query Params and Hash: drops everything after ? or #.
- Decode URL percent-encoding: turns %20 back into a space, and so on.
- Collapse multiple hyphens: changes runs like -- into a single hyphen.
- Trim leading and trailing hyphens: removes edge dashes and slashes.
- Force lowercase: makes every letter lowercase.
Two buttons load a sample or clear the box. Two more copy the output or download it as a text file. The tool formats text only and does not publish or test any link.
How to Use It, Step by Step
- Paste your dirty URLs or slugs into the left box, one per line.
- Or press Sample to load four example lines.
- Check or uncheck the six rules under URL Sanitization Rules.
- Watch the Sanitized URL Slug Output box update as you type.
- Press Copy to grab the output, or Download for a .txt file.
How the Cleaning Rules Work
Each line runs through the checked rules in a fixed order. The tool strips the query string first, then the domain, then decodes percent codes.
After that it lowercases the text and replaces every character outside letters, digits, and hyphens with a hyphen. Last it collapses repeated hyphens and trims the edges.
Dirty URL→Strip Query And Domain→Decode And Lowercase→Hyphenate And Trim=Clean Slug
Worked Example
Press Sample to load four messy lines with all six rules on. The tool cleans each line on its own. Here is what each line becomes.
| Input Line | Cleaned Output |
|---|
| .../blog/How--To---Build%20Web%20Apps/?utm_source=twitter | how-to-build-web-apps |
| .../products/BEST---SELLER---ITEM---%202026/?ref=123 | best-seller-item-2026 |
| /category/sub-category//nested---slug---name--/ | nested-slug-name |
| SOME_MESSY_SLUG_NAME_WITH_SPECIAL_CHARS | some-messy-slug-name-with-special-chars |
Notice the first three keep only the last path segment. The parent folders like "blog" and "products" are dropped when the extract rule is on.
How Special Characters Are Handled
Any character that is not a letter, digit, or hyphen becomes a hyphen. That includes spaces, underscores, slashes, and punctuation such as exclamation points or at signs.
Accented letters are not transliterated. A letter like "é" or "ü" turns into a hyphen, so "café" becomes "caf". Keep that in mind for non-English words.
Percent codes decode first when that rule is on, so "%20" becomes a space and then a hyphen. If a code is broken, the tool leaves that line alone and moves on.
Reading the Status Cards
Four cards sit above the boxes. Slugs Cleaned counts the non-blank input lines. Original Chars and Cleaned Chars show total characters before and after.
Length Reduction is the percent drop from original to cleaned, rounded to a whole number. If a cleaned result is longer, the value can now read as a negative percent.
Limitations and Assumptions
- The extract rule keeps only the last path segment, so parent folders are lost.
- Accented and non-Latin letters are dropped, not converted to Latin forms.
- There is no length limit, so very long lines stay long after cleaning.
- Blank lines no longer count toward the Slugs Cleaned total.
- The tool does not test the link, follow redirects, or confirm the page exists.
- Output is plain text that you still paste into your own CMS or redirect map.
FAQs About the URL Slug Cleaner
What Is the Difference From the Slug Generator?
The slug generator builds one slug from a fresh title. This cleaner fixes existing URLs or messy slugs in bulk, one per line, and keeps the last path segment.
Why Did It Keep Only Part of My URL?
With the extract rule on, the tool keeps the last path segment. Folders before it, like "blog" or "shop", are removed. Turn that rule off to clean the whole path as one string.
Does It Convert Accented Letters Like e-acute?
No. Accented and non-Latin letters become hyphens rather than base Latin letters. If you need accent stripping, prepare the text first, then paste it here for a final cleanup.
Can I Clean Many URLs at Once?
Yes. Paste one URL or slug per line, and the tool cleans each line on its own. Use the Download button to save the full list as a plain text file.
Does This Tool Check if the Link Still Works?
No. It only reformats text and never requests the page. To test whether a link resolves, use the URL redirect checker instead.
Will the Cleaned Slug Rank Better in Search?
Clean slugs can help readers and crawlers read your paths, but ranking depends on many factors. Pair tidy URLs with good tags from the meta tag generator and a canonical URL. More tools sit in the web and SEO tools hub.
This calculator gives general estimates only and is not professional advice. Reviewed for general accuracy by Prof. Dr. Khalil Mudassar, PhD.