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URL Clash Detect

Spot duplicate and conflicting URL parameters. Nothing leaves your browser.

Free: up to 25 URLs. Pro: 1,000.

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Paste one or more URLs to check them.

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URL Clash Detect Pro

$1.99/90d
    Card
    USDT · Crypto

    Pay securely by card, Apple Pay, or Google Pay via Stripe.

    🔒 100% private · runs in your browser

    Find clashing URL query parameters

    Paste URLs and see repeated or conflicting query parameters in seconds, right in your browser.

    Free

    • Paste up to 25 URLs (one per line) and check them in one go
    • Detects repeated parameter keys inside each URL (e.g. ?a=1&a=2)
    • Flags each repeat as Duplicate (same value) or Conflict (different values)
    • Shows the cleaned URL with duplicates removed (keeps first value)
    • Copy the report and cleaned URLs as plain text

    Pro PRO

    • Up to 1,000 URLs per check
    • Cross-URL clash mode: same base URL with different values for the same parameter across the list
    • Case-insensitive key matching and ignore-list for params like utm_*
    • Choose keep-first or keep-last when cleaning
    • Export report as CSV or JSON
    • Local history of the last 20 checks (stored in localStorage)
    100% private — your data never leaves your device. v1.0.0

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    URL Clash Detect Pro Unlock Pro: higher limits and extras. Plans from $1.99 · cancel anytime.
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