Efficient User Agent Spoofing with Chrome Mask

Chrome Mask is a Firefox extension designed for web developers and testers, providing a seamless way to spoof the user agent as Chrome on specific websites. Unlike generic user agent spoofing extensions, Chrome Mask allows users to selectively apply the Chrome mask, making it a more tailored solution for testing website compatibility. The extension automatically updates to the latest Chrome version every 24 hours by querying an API, ensuring that users are always mimicking the most current browser version.

Additionally, Chrome Mask simplifies the process by automatically selecting the appropriate operating system for the spoofed user agent. It enhances its functionality by shimming essential JavaScript attributes, such as navigator.vendor and the global chrome object, which helps in passing common browser compatibility checks. This makes it a valuable tool for developers who need to test their applications across different browser environments.

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App specs

  • License

    Subscription

  • Version

    8.0.0
  • Latest update

  • Platform

    firefox

  • Downloads

    5

  • Size

    60.12 KB

  • Developer

Program available in other languages



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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.
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Is Chrome Mask safe?

100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

  • Virus free
  • Spyware free
  • Malware free
  • Verified by Security Partners

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Scan Info

Last scan
Wednesday, January 7, 2026
Scan provider
VirusTotal · Full report

File Integrity

File
8.0.0.xpi
SHA256
a088564677248e9ab004ed91d072c7a38cf1d231710efa0bf737bda791a22170
SHA1
1f48a6096be83b77712cc0e99b64ea6a2b958cc0

Softonic security commitment

Chrome Mask has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware. For more information, visit our Security and Trust Center