Welcome to JSFeeds
hello.js
NEW !!!
Tuesday, 31 October, 2023 UTC
Down and to the Right: Firefox Got Faster for Real Users in 2023
One of the biggest challenges for any software is to determine how changes impact user experience in the real world. Whether it’s the processing speed of video editing software or the smoothness of a browsing experience, there’s only so much you can ... moreTuesday, 5 September, 2023 UTC
Faster Vue.js Execution in Firefox
Speedometer 3 is a cross-industry effort to build a modern browser benchmark rooted in real-world user experiences. Its goal is to focus browser engineering effort towards making the Web more smooth for actual users on actual pages. This is hard to do ... moreTuesday, 8 August, 2023 UTC
Autogenerating Rust-JS bindings with UniFFI
I work on the Firefox sync team at Mozilla. Four years ago, we wrote a blog post describing our strategy to ship cross-platform Rust components for syncing and storage on all our platforms. The vision was to consolidate the separate implementations of ... moreThursday, 8 September, 2022 UTC
The 100% Markdown Expedition
The 100% Markdown Expedition In June 2021, we decided to start converting the source code for MDN web docs from HTML into a format that would be easier for us to work with. The goal was to get 100% of our manually-written documentation converted to Markdown, ... moreWednesday, 29 June, 2022 UTC
Neural Machine Translation Engine for Firefox Translations add-on
Firefox Translations is a website translation add-on that provides an automated translation of web content. Unlike cloud-based alternatives, translation is done locally on the client-side in the user’s computer so that the text being translated does ... moreMonday, 27 June, 2022 UTC
The JavaScript Specification has a New License
Ecma International recently approved the 2022 standard of ECMAScript. There is something new in this edition that hasn’t been part of prior editions, but this isn’t a new programming feature. In March of this year, Ecma International accepted a proposal ... moreTuesday, 7 June, 2022 UTC
Training efficient neural network models for Firefox Translations
Machine Translation is an important tool for expanding the accessibility of web content. Usually, people use cloud providers to translate web pages. State-of-the-art Neural Machine Translation (NMT) models are large and often require specialized hardware ... moreThursday, 12 May, 2022 UTC
Improved Process Isolation in Firefox 100
Introduction Firefox uses a multi-process model for additional security and stability while browsing: Web Content (such as HTML/CSS and Javascript) is rendered in separate processes that are isolated from the rest of the operating system and managed ... moreTuesday, 1 March, 2022 UTC
A new year, a new MDN
If you’ve accessed the MDN website today, you probably noticed that it looks quite different. We hope it’s a good different. Let us explain! MDN has undergone many changes in its sixteen-year history from its early beginning as a wiki to the recent migration ... moreThursday, 9 September, 2021 UTC
Time for a review of Firefox 92
Release time comes around so quickly! This month we have quite a few CSS updates, along with the new Object.hasOwn() static method for JavaScript. This blog post provides merely a set of highlights; for all the details, check out the following: Firefox ... moreTuesday, 3 August, 2021 UTC
How MDN’s autocomplete search works
Last month, Gregor Weber and I added an autocomplete search to MDN Web Docs, that allows you to quickly jump straight to the document you’re looking for by typing parts of the document title. This is the story about how that’s implemented. If you stick ... moreTuesday, 13 July, 2021 UTC
Getting lively with Firefox 90
Getting lively with Firefox 90 As the summer rolls around for those of us in the northern hemisphere, temperatures are high and unwinding with a cool ice tea is high on the agenda. Isn’t it lucky then that Background Update is here for Windows, which ... moreTuesday, 8 June, 2021 UTC
Implementing Private Fields for JavaScript
This post is cross-posted from Matthew Gaudet’s blog When implementing a language feature for JavaScript, an implementer must make decisions about how the language in the specification maps to the implementation. Sometimes this is fairly simple, where ... moreTuesday, 1 June, 2021 UTC
Looking fine with Firefox 89
While we’re sitting here feeling a bit frumpy after a year with reduced activity, Firefox 89 has smartened up and brings with it a slimmed down, slightly more minimalist interface. Along with this new look, we get some great styling features including ... moreTuesday, 18 May, 2021 UTC
Introducing Firefox’s new Site Isolation Security Architecture
Like any web browser, Firefox loads code from untrusted and potentially hostile websites and runs it on your computer. To protect you against new types of attacks from malicious sites and to meet the security principles of Mozilla, we set out to redesign ... moreThursday, 22 April, 2021 UTC
Pyodide Spin Out and 0.17 Release
We are happy to announce that Pyodide has become an independent and community-driven project. We are also pleased to announce the 0.17 release for Pyodide with many new features and improvements. Pyodide consists of the CPython 3.8 interpreter compiled ... moreMonday, 22 March, 2021 UTC
How MDN’s site-search works
tl;dr; Periodically, the whole of MDN is built, by our Node code, in a GitHub Action. A Python script bulk-publishes this to Elasticsearch. Our Django server queries the same Elasticsearch via /api/v1/search . The site-search page is a static single-page ... moreTuesday, 23 February, 2021 UTC
Introducing State Partitioning
State Partitioning is the technical term for a new privacy feature in Firefox called Total Cookie Protection, which will be available in ETP Strict Mode in Firefox 86. This article shows how State Partitioning works inside of Firefox and explains what ... moreTuesday, 23 February, 2021 UTC
Introducing State Partitioning
State Partitioning is the technical term for a new privacy feature in Firefox called Total Cookie Protection, which will be available in ETP Strict Mode in Firefox 86. This article shows how State Partitioning works inside of Firefox and explains what ... moreThursday, 11 February, 2021 UTC
MDN localization update, February 2021
In our previous post, An update on MDN Web Docs’ localization strategy, we explained our broad strategy for moving forward with allowing translation edits on MDN again. The MDN localization communities are waiting for news of our progress on unfreezing ... moreThursday, 11 February, 2021 UTC
MDN localization update, February 2021
In our previous post, An update on MDN Web Docs’ localization strategy, we explained our broad strategy for moving forward with allowing translation edits on MDN again. The MDN localization communities are waiting for news of our progress on unfreezing ... moreTuesday, 26 January, 2021 UTC
January brings us Firefox 85
To wrap up January, we are proud to bring you the release of Firefox 85. In this version we are bringing you support for the :focus-visible pseudo-class in CSS and associated devtools, <link rel="preload"> , and the complete removal of ... moreTuesday, 26 January, 2021 UTC
January brings us Firefox 85
To wrap up January, we are proud to bring you the release of Firefox 85. In this version we are bringing you support for the :focus-visible pseudo-class in CSS and associated devtools, <link rel="preload"> , and the complete removal of ... moreThursday, 21 January, 2021 UTC
Porting Firefox to Apple Silicon
The release of Apple Silicon-based Macs at the end of last year generated a flurry of news coverage and some surprises at the machine’s performance. This post details some background information on the experience of porting Firefox to run natively on ... moreThursday, 21 January, 2021 UTC
Analyzing Bugzilla Testcases with Bugmon
As a member of Mozilla’s fuzzing team, our job is not only to find bugs, but to do what we can to help get those bugs fixed as quickly as possible. Some of the many ways we can do that is by: Confirming the validity of new or stalled bugs Determining ... moreThursday, 21 January, 2021 UTC
Analyzing Bugzilla Testcases with Bugmon
As a member of Mozilla’s fuzzing team, our job is not only to find bugs, but to do what we can to help get those bugs fixed as quickly as possible. Some of the many ways we can do that is by: Confirming the validity of new or stalled bugs Determining ... moreWednesday, 20 January, 2021 UTC
Porting Firefox to Apple Silicon
The release of Apple Silicon-based Macs at the end of last year generated a flurry of news coverage and some surprises at the machine’s performance. This post details some background information on the experience of porting Firefox to run natively on ... moreTuesday, 12 January, 2021 UTC
Improving Cross-Browser Testing, Part 2: New Automation Features in Firefox Nightly
In our previous blog post about the web testing ecosystem, we described the tradeoffs involved in automating the browser via the HTTP-based WebDriver standard versus DevTools protocols such as Chrome DevTools Protocol (CDP). Although there are benefits ... moreThursday, 7 January, 2021 UTC
Improving Cross-Browser Testing, Part 2: New Automation Features in Firefox Nightly
In our previous blog post about the web testing ecosystem, we described the tradeoffs involved in automating the browser via the HTTP-based WebDriver standard versus DevTools protocols such as Chrome DevTools Protocol (CDP). Although there are benefits ... moreWednesday, 16 December, 2020 UTC
