Opera browser required.
Testing Toolkit brings essential QA tools together in a single extension:
* UA Inspector: View, parse, copy, and override the User-Agent for the active tab with built‑in presets or custom strings.
* Screen Capture: Full-page or selection captures with in-browser annotation and saving; includes screen recording shortcuts.
* Network Throttling: Apply ready-made speed presets (e.g., Slow 2G, 3G, 4G, No throttling) to the active tab for quick performance checks.
* Base64 Encode/Decode: Convert text to/from Base64 with instant copy helpers.
Designed for testers and developers, it keeps tasks fast and organized without juggling multiple tools.
- This extension can access your data on all websites.
- This extension can write data into the clipboard.
- This extension can access your tabs and browsing activity.
Screenshots
About the extension
- Downloads
- 28
- Category
- Productivity
- Version
- 1.0.0
- Size
- 80.0 KB
- Last update
- Jan. 23, 2026
- License
- Copyright 2025 Noahcore
- Privacy policy
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