Built for you to design, code, test, refine a better web for everybody. Follow us for announcements, tips, sneak peeks, and more!
Mozilla's Global Community
Joined July 2013
- Tweets2K
- Following44
- Followers44.1K
- Likes1.9K
Firefox DevTools retweeted
🚀 A bunch of #WebDriver features and fixes landed in Firefox 146. WebDriver is the W3C standard for interoperable browser automation, for things like testing tools, and MCPs.
Keep up to date with all the progress here:
fxdx.dev/firefox-webdriver-n…
Firefox DevTools retweeted
In Firefox 146 DevTools, long lists of unused CSS custom properties collapse, decluttering the UI, and improving performance
Firefox DevTools retweeted
A bunch of web platform features and bug fixes landed in Firefox 146. There'll be more videos about the highlights soon, but in the meantime, here's a summary: developer.mozilla.org/en-US/…
Firefox DevTools retweeted
CSS @scope has landed in Firefox 146, making it a new baseline feature. Here's how it works:
Firefox DevTools retweeted
We have Custom Elements, but do we also need Custom Attributes?
This was discussed at TPAC. Is it something you'd like on the platform?
Firefox DevTools retweeted
Last week I posted about a secret config in Firefox that made view transitions easier to debug.
@SailorPsy said we should make it less secret.
So we did.
Firefox DevTools retweeted
We're currently working on devtools for view transitions in Firefox, but in the meantime, here's a little-known option that helps…
Firefox DevTools retweeted
There are… a lot of proposals, but you don't need to rank them all. Skim through the list, and find the few you really care about.
This is an experiment, so we're also interested in feedback on the app itself, and things we can improve for next year.
Firefox DevTools retweeted
As an experiment, we (the Firefox team) wanted to try a new way to get feedback on which Interop proposals matter most.
So, here's a web app where you can rank the proposals you care about, giving us data we can use when reviewing which ones to champion.
interop-rank.jakearchibald.c…
Firefox DevTools retweeted
A little while ago I added a little quality of life feature to @FirefoxDevTools . Now the network filter query persists between devtools instances! (you used to have to type it out every time)
ticket: bugzilla.mozilla.org/show_bu…
before & after:
Firefox DevTools retweeted
We had fun squashing bugs in DevTools in @firefox 132, get the details in fxdx.dev/firefox-devtools-ne…
#webdev #css #serviceworker #a11y
Firefox DevTools retweeted
…and for those interested, there is also `:screenshot` Web Console helper in Firefox, so for example doing
:screenshot --clipboard --selector article
here would place a picture of the first tweet in the DOM into your clipboard. See: firefox-source-docs.mozilla.…
Firefox DevTools retweeted
And tangentially related: Firefox has a "wysiwyg" screen capture tool on Ctrl+Shift+S that by default picks "block" rectangles of DOM nodes. (Not sure about heuristics how it chooses what the "screenshotable" element will be and what will not, though.)
Firefox DevTools retweeted
Firefox 131 was released this weeks and we're really excited because it comes with new superpowers for debugging CSS variables and other Inspector improvements:
fxdx.dev/firefox-devtools-ne…
#css #webdev
ALT Firefox DevTools Inspector rules view, showing a variable tooltip whose declaration value is `light-dark(hotpink, var(--primary-color))`. A computed value section has the following text in it `rgb(255, 105, 180)`. Below it is a `@property` section, describing the variable registered property information.
Firefox DevTools retweeted
#DevTools tip for today:
You can "Edit and Resend" a request in @FirefoxDevTools.
(I don't care if it's available since last Monday or has been there for ages, this is seriously awesome and needs more acclaim!)
Firefox DevTools retweeted
Now that is very cool 😎
Short and sweet, here's what's new in @firefox DevTools 130: fxdx.dev/firefox-devtools-ne…
There's a lot happening behind the scene that we'll talk about in the coming posts!
#webdev #javascript #debugging
Firefox DevTools retweeted
I didn't realise that clicking on the purple 𝘀𝗰𝗿𝗼𝗹𝗹 button in #FireFox Developer Tools would highlight which elements are causing the overflow. Nice feature @FirefoxDevTools . I also like using the grey 𝗲𝘃𝗲𝗻𝘁 button.
Firefox DevTools retweeted
🚀 Exciting news! @Mozilla @Firefox is sponsoring the @_WeLoveSpeed 2024 Conference on web performance in Nantes, France 🇫🇷 next Tuesday! 🎉 We’re giving away 1 FREE ticket + two 20% off coupons to the first 3 replies! 🎟️ Don’t miss out! 🍀
Firefox DevTools retweeted
On last @FirefoxNightly, in @FirefoxDevTools the variable tooltip values are parsed like in the Rules view. It can help you, for example, seeing that a variable is not set, or checking which color is returned by light-dark ⚡️
This should ship in 131 (Beta/DevEdition next week)!
ALT Firefox DevTools rules view focus on a single declaration: `outline-color: var(--page-nav-button-outline)`. A tooltip is displayed, pointing to the `var()`; it has 2 sections: - the top one has the following text: `var(--unset, var(--page-nav-button-text-color))`. The `--unset` is struck through and has a gray color, while the second parameter of the var function has syntax highlighting - below it, a computed value section, with the following: `light-dark(#1514a, #fbfbfe)`. This time, the first param is syntax highlighted, while the second one is struck through, and has a gray color.