Question 1

How does the duplicate check work?

Accepted Answer

The tool normalizes both the new URL and all saved URLs based on your Professional Options, then compares slugs (or full paths) using exact match and Levenshtein similarity. You control what gets ignored (www, protocol, query params, stop words).

Question 2

What does 'Ignore www / non-www' do?

Accepted Answer

It treats 'www.example.com' and 'example.com' as the same domain, so both are stored under the same normalized key. This prevents false negatives when your database mixes www and non-www URLs.

Question 3

What does 'Remove Stop Words from slug' do?

Accepted Answer

It strips common filler words (a, the, and, for, in, etc.) from the slug before comparison. So 'guide-to-seo' and 'seo-guide' would be compared as 'guide-seo' vs 'seo-guide' — catching topic duplicates that differ only in stop-word phrasing.

Question 4

What is Basic Stemming?

Accepted Answer

Stemming reduces words to their root form by removing common suffixes (-ing, -ed, -es, -s). So 'ranking-guide' and 'rankings-guide' would both reduce to 'ranking-guide' and be flagged as duplicates.

Question 5

What does 'Compare Full Path' mode do?

Accepted Answer

Instead of comparing only the last slug segment (e.g., 'seo-guide'), it compares the full URL path (e.g., '/blog/2024/seo-guide'). Use this if your site has pages with identical slugs in different directories.

Question 6

Where is my URL database stored?

Accepted Answer

All URLs are stored exclusively in your browser's localStorage. Nothing is ever sent to any server. Data persists between sessions on the same browser/device.

URL & Slug Duplicate Checker

1. Add Existing URLs

2. Check New URL / Slug

Saved URL Database

Frequently Asked Questions

Frequently Asked Questions (FAQ)

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