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MOZILLA BLOCKS CHROME'S PROMPT API PROPOSAL

DEV DESK1 MIN READ
FRI, MAY 22, 2026

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Mozilla has formally opposed Google Chrome's Prompt API in the W3C standards process, citing security and user experience concerns. The disagreement highlights ongoing tensions between browser vendors over web platform features.

Mozilla filed its opposition to Chrome's Prompt API proposal on GitHub's standards-positions repository, arguing the feature poses risks to user privacy and security. The API would allow websites to trigger native browser prompts for user input, but Mozilla contends the implementation could be abused to create deceptive interfaces. The proposal has generated significant discussion in developer communities, with the GitHub issue attracting 178 points and 73 comments on Hacker News. Critics worry the feature could enable phishing attacks or manipulate user behavior through misleading prompts. Chrome's interest in the API reflects the browser's broader push to expand web capabilities, while Mozilla's resistance underscores the need for consensus among browser vendors before adopting new standards. The disagreement will likely continue through W3C review processes, where both browsers hold considerable influence over web platform evolution. No timeline has been set for final resolution.

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Hacker News

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