Firefox Enterprise Is Here. How to Get Its AI Controls Free with policies.json
If you run plain Firefox, at home or on a fleet of laptops managed with a policies.json file, Firefox Enterprise takes nothing away from you. Mozill…
Latest Web news from Tech News
All topics
AI
agents
ai
api
architecture
automation
backend
beginners
career
database
devchallenge
devops
discuss
javascript
linux
llm
machinelearning
mcp
opensource
performance
productivity
programming
python
react
security
showdev
testing
tutorial
typescript
webdev
Web Accessibility with Firefox DevTools: Auditing ARIA, Contrast, and Keyboard Navigation
Web accessibility ensures that websites work for all users — including those using screen readers, keyboard-only navigation, or other assistive tech…
JavaScript Error Handling: Custom Error Types, Result Pattern, Global Handlers, and Error.cause
JavaScript error handling is often an afterthought — a try/catch here and there. But a robust error handling strategy makes the difference between a…
Tab Manager & Session Saver for Firefox: Complete Guide to Named Sessions, Workflows, and Organization
Tab management is one of the most common pain points for browser users. The average knowledge worker has 20+ tabs open at any time; developers and r…
Dark Mode in Firefox: NightOwl vs Dark Reader, OS Integration, about:config, and Scheduling
Dark mode has gone from a niche preference to an expected feature. Firefox users have several options for enabling dark mode — from the OS-level set…
Firefox Picture-in-Picture: Captions, Multiple Videos, Video Calls, and Productivity Workflows
Firefox's Picture-in-Picture (PiP) mode is one of its most useful quality-of-life features — and one of the most underused. It lets you pop any vide…
Vim Keybindings in Firefox: Tridactyl Setup, Configuration, and Workflow
Vimperator, Pentadactyl, and Tridactyl are extensions that bring Vim-style keyboard navigation to Firefox. If you spend most of your time in a termi…
Regex in Firefox: Named Groups, Unicode Support, and DevTools Debugging
Firefox's DevTools include regex testing capabilities, and Firefox's JavaScript engine has some regex-specific features worth knowing for developers…
Testing Security Headers in Firefox: CSP, HSTS, X-Frame-Options, and DevTools Debugging
Security headers are server-side HTTP headers that instruct browsers on security behavior. Firefox implements all the major ones. Here's a practical…
Firefox for Testing and Automation: geckodriver, Playwright, and CI Pipelines
Firefox is an excellent choice for automated testing and web scraping — it has official WebDriver support (geckodriver), a stable API, and unique fe…
about:config Settings Worth Changing (and What Not to Touch)
about:config is Firefox's advanced settings panel — a flat key-value store for hundreds of internal preferences. Most users never touch it. Knowing…
Debugging Service Workers in Firefox: DevTools, about:debugging, and Common Issues
Service workers are a critical web platform feature — they enable offline capabilities, push notifications, and background sync. Firefox has full se…
Firefox vs LibreWolf vs Tor Browser: Choosing the Right Privacy Tool
Three Firefox-based browsers with different privacy postures. Here's an honest breakdown of what each protects against and when to choose each. The…
Customizing Firefox's New Tab Page: From Simple to Full Control
Firefox's new tab page has changed over the years. Here's what you can configure natively, and what extensions exist for more control. Firefox Home…
Firefox vs Chrome for Privacy: What's Actually Different
Firefox vs Chrome for Privacy: What's Actually Different "Firefox is better for privacy" is the standard recommendation, but most guides don't expla…
Firefox about:config Settings Worth Changing (With Explanations)
Firefox about:config Settings Worth Changing (With Explanations) Firefox's about:config page exposes hundreds of hidden settings. Most guides give y…
Firefox Keyboard Shortcuts That Actually Speed Up Your Workflow
Firefox Keyboard Shortcuts That Actually Speed Up Your Workflow Most Firefox shortcut guides cover Ctrl+T (new tab) and Ctrl+W (close tab). Here are…
Firefox Extensions for Researchers and Students (That Don't Require an Account)
Firefox Extensions for Researchers and Students (That Don't Require an Account) Research workflows involve a specific kind of browser chaos: dozens…
I built 10 free Firefox extensions for everyday users — here's what I learned
I've spent the last several months building Firefox extensions focused on everyday users — not developers. Students, remote workers, home users. Peo…
Good Bear 1.0: изолированное доверие к российской PKI, интерфейс, лицензия и сборка
Представляем обзор свободного браузера Good Bear 1.0 для безопасной работы с веб-сайтами, использующими сертификатные цепочки Минцифры. Читать далее
Interview: Firefox's chief on why he hopes a redesign will help win users from Chrome
Mozilla's Ajit Varma explains why a redesign suits the fight for the open web.
Cookies, которых не видно: partitioned cookies, cookies.txt и одно расширение под три браузера
Бывает так: открываете менеджер cookies, удаляете всё для сайта, перезагружаете страницу — а сайт вас по-прежнему узнаёт. Одна из причин в том, что…
Setting Firefox Bookmark Keywords From an Extension, Without an API for It
I use bookmark keywords all day. Type "jira" in the address bar, hit enter, and you're on the board. Firefox gives a keyword the top "Visit" suggest…
We shipped a proxy extension for Firefox and Edge. Both browsers quietly reuse the old proxy tunnel, and that almost broke it.
We run a pay-as-you-go proxy service. Until this month, using it in a browser meant the manual route: open the proxy settings, type a hostname and p…
Удалить что угодно со страницы одним кликом: как устроен «пипеточный» блокировщик на Manifest V3
Бывает, что блокировщик рекламы не справляется: всплывающее окно подписки, баннер «мы используем cookies», чат-виджет в углу, липкая шапка на пол-эк…
Inaudible sounds used to fingerprint browsers catch AliExpress red-handed
Is the technique outdated? Yes. Is it still creepy? Also yes.
GreaseMonkey, or How to Enhance Your Web Experience (2008)
Archival repost — originally published on my old blog on December 21, 2008. Lightly cleaned up for dev.to (translated from French, and I fixed a sma…
Установка SSL-сертификатов в профиль Firefox
Столкнувшись с необходимостью использовать сертификат Минцифры из-за отзыва зарубежных SSL-сертификатов, некоторые хабравчане почему-то начали приду…
Russian Spelling Dictionary 1.0.5: Экспансия
Когда я выпускал Russian Spelling Dictionary 1.0.1, задача была довольно узкой: собрать пригодный для повседневной работы русский орфографический сл…
Mozilla adopted my Firefox DevTools MCP, but I didn't build it to browse the web
A little while ago I wrote an MCP server that lets an AI agent inspect and control Firefox through the Remote Debugging Protocol. It got adopted int…