#MozillaHacksWebDeveloper

A deeper look at PACT: a new initiative to tackle the rising tide of CAPTCHAs on the web whilst keeping the web open and preserving user's privacy.

A JPEG XL decoder is heading for Firefox 157! Here's how we're shipping it safely…

Support for Web Serial in Firefox 151 for Desktop Firefox can now connect directly to microcontrollers, development boards, 3D printers, power meters, and other serial-connected hardware from the web. Starting ...

New details about what we found, and how agentic harnesses are now able to reproduce real bugs and dismiss false positives.

The open web is a critical platform for applications that handle highly sensitive data, from private communications to financial transactions and medical records. Traditionally, servers are trusted to deliver the ...

In January, we introduced our Nightly package for RPM-based Linux distributions. Today, we are thrilled to announce it is now available for Firefox Beta! Firefox Beta is great for testing ...

In January, we introduced our Nightly package for RPM-based Linux distributions. Today, we are thrilled to announce it is now available for Firefox Beta!…

*This post is an expanded version of a presentation I gave at the 2025 **WebAssembly CG** meeting in Munich.

Cross-site scripting (XSS) remains one of the most prevalent vulnerabilities on the web.

Interop 2025 brought a bunch of new web platform features & fixes, but here's what's coming in 2026…

Firefox is now the first and the only browser to deploy fast and comprehensive certificate revocation checking that does not reveal your browsing activity to anyone (not even to Mozilla). ...

Beginning in version 138, Firefox will offer an alternative to DLL injection for Data Loss Prevention (DLP) deployments in enterprise environments.

# Launching Interop 2025 The Interop Project is a collaboration between browser vendors and other platform implementors to provide users and web developers with high quality implementations of the web platform.

Today Mozilla and Filament are releasing Uniffi for React Native, a new tool we’ve been using to build React Native Turbo Modules in Rust, under an open source license.

We’re pleased to announce that, as of version 23, the Puppeteer browser automation library now has first-class support for Firefox.

Mozilla’s recently announced Builders program supports projects that advance the cause of open source AI.

*As discussed on Mozilla Connect**, Firefox 130 will introduce an experimental new capability to automatically generate alt-text for images using a fully private on-device AI model.