Add‑Param by Bigdav

Quickly opens the current URL with discovered and manually entered query parameters in customizable batches, useful for penetration testing and debugging.

5 (1 reviews)

7 Users

You'll need Firefox to use this extension

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About this extension

Add‑Param is a Firefox extension designed for security researchers, bug bounty hunters, and developers who need to test how web applications handle query parameters.

Features:
- Extracts parameters automatically from links, forms, URL fragments, and network requests (XHR/fetch).
- Allows adding custom (manual) parameters.
- Merges automatic and manual parameters, removes duplicates, and appends common values to each.
- Opens generated URLs in new tabs in batches of 20 for efficient testing.
- Provides a modern dark UI with a dedicated "Run Auto Extract" control.

The extension runs entirely locally, with no external requests or services.

Rated 5 by 1 reviewer

Release notes for 1.1

Updated extension icons to exact sizes (48x48, 96x96, 128x128) for AMO compliance.
Fixed AMO General Test warnings related to icon dimensions.
Maintained neon green hacker‑style popup design introduced in previous update.
Popup UI optimized for clarity and consistency with new icons.

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