MetaMask Legacy Web3 Extension for Firefox

MetaMask Legacy Web3 is a Firefox extension designed for web development in the blockchain sphere. This tool allows websites to interact with the blockchain via an API, ensuring seamless integration for developers. The extension is particularly valuable for maintaining compatibility with older websites that relied on the now-deprecated window.web3 API. By offering this legacy support, it enhances security and performance while ensuring accessibility to various blockchain functionalities.

This subscription-based tool is essential for developers looking to work with web applications that have not yet transitioned to newer protocols. The MetaMask wallet, when used in conjunction with this extension, provides a comprehensive solution for interacting with both new and legacy web experiences, ensuring that developers can continue to provide services across a wider range of applications.

App specs

  • License

    Subscription

  • Version

    1.0.2

  • Latest update

  • Platform

    firefox

  • Size

    99.63 KB

  • Developer

    • danfinlay

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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Your review for MetaMask Legacy Web3
Softonic
100/100

Score result: Clean

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

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Scan Info

Last scan
Wednesday, September 24, 2025
Scan provider
VirusTotal · Full report

File Integrity

File
1.0.2.xpi
SHA256
1ff734780b76d7e0aafdc155d8c4ffef70ec930a8db7e621989e32aee50bdf62
SHA1
d6fd1393108dead549b1cae2d2ae9603197e8f72

Softonic security commitment

MetaMask Legacy Web3 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.