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Developer tools · #firefox
Use Firefox containers to keep work and personal logins separate in one desktop profile. Covers prerequisites, assignment, checks, and what removal deletes.
Decide between Firefox Rapid Release and Extended Support Release (ESR) for your organization. Compare update cadence, policy control, TLS inspection, and migration risk. Follow a concrete validation workflow to ensure your internal web apps run smoothly.
Firefox's strict Enhanced Tracking Protection blocks third‑party trackers by default, but it can also break login, payment, and embed flows. Here's how to test your site, interpret the shield icon, and adapt before users hit the exceptions list.
Discover how Firefox automatically prefetches resources sent via the Link header, the practical steps to enable it, and the trade‑offs that can impact bandwidth and performance.
An architecture note on Firefox's multi-process design, explaining how it isolates content, enforces trust boundaries, and handles process failures.
Explore how Firefox uses a multi-process architecture to prevent single-tab crashes from freezing the browser, and learn how to tune the memory vs. stability trade-off.
Firefox's Project Fission (Firefox 93+) isolates cross-origin documents into separate OS processes to mitigate Spectre-class attacks. Covers per-eTLD+1 design, IPC bridges, trust boundaries, verification via about:processes, failure modes, and future design pressures.
Learn how Firefox’s Enhanced Tracking Protection blocks trackers in the content process, how to verify it’s active, and what to do when Strict mode breaks a site.
Learn how to use Firefox Multi-Account Containers to isolate cookies and session data, allowing multiple simultaneous logins to the same service without separate browser profiles.