Experimenting with local alt text generation in Firefox Nightly – Mozilla Hacks - the Web developer blog
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. The feature will be available as part of Firefox’s built-in PDF editor, and our end goal is to make it available in general browsing for users with screen readers. Why alt text? Web pages have a fundamentally simple struc
WebAssembly and Back Again: Fine-Grained Sandboxing in Firefox 95 – Mozilla Hacks - the Web developer blog
WebAssembly and Back Again: Fine-Grained Sandboxing in Firefox 95 In Firefox 95, we’re shipping a novel sandboxing technology called RLBox — developed in collaboration with researchers at the University of California San Diego and the University of Texas — that makes it easy and efficient to isolate subcomponents to make the browser more secure. This technology opens up new opportunities beyond wh
A crash course in just-in-time (JIT) compilers – Mozilla Hacks - the Web developer blog
This is the second part in a series on WebAssembly and what makes it fast. If you haven’t read the others, we recommend starting from the beginning. JavaScript started out slow, but then got faster thanks to something called the JIT. But how does the JIT work? How JavaScript is run in the browser When you as a developer add JavaScript to the page, you have a goal and a problem. Goal: you want to t
Calls between JavaScript and WebAssembly are finally fast 🎉 - Mozilla Hacks - the Web developer blog
At Mozilla, we want WebAssembly to be as fast as it can be. This started with its design, which gives it great throughput. Then we improved load times with a streaming baseline compiler. With this, we compile code faster than it comes over the network. So what’s next? One of our big priorities is making it easy to combine JS and WebAssembly. But function calls between the two languages haven’t alw
A New Backend for Cranelift, Part 1: Instruction Selection – Mozilla Hacks - the Web developer blog
A New Backend for Cranelift, Part 1: Instruction Selection This post will describe my recent work on Cranelift as part of my day job at Mozilla. In this post, I will set some context and describe the instruction selection problem. In particular, I’ll talk about a revamp to the instruction selector and backend framework in general that we’ve been working on for the last nine months or so. This work
Safely reviving shared memory – Mozilla Hacks - the Web developer blog
At Mozilla, we want the web to be capable of running high-performance applications so that users and content authors can choose the safety, agency, and openness of the web platform. One essential low-level building block for many high-performance applications is shared-memory multi-threading. That’s why it was so exciting to deliver shared memory to JavaScript and WebAssembly in 2016. This provide
Securing Firefox with WebAssembly – Mozilla Hacks - the Web developer blog
Protecting the security and privacy of individuals is a central tenet of Mozilla’s mission, and so we constantly endeavor to make our users safer online. With a complex and highly-optimized system like Firefox, memory safety is one of the biggest security challenges. Firefox is mostly written in C and C++. These languages are notoriously difficult to use safely, since any mistake can lead to compl
Using WebAssembly from .NET with Wasmtime – Mozilla Hacks - the Web developer blog
Wasmtime, the WebAssembly runtime from the Bytecode Alliance, recently added an early preview of an API for .NET Core, Microsoft’s free, open-source, and cross-platform application runtime. This API enables developers to programmatically load and execute WebAssembly code directly from their .NET programs. .NET Core is already a cross-platform runtime, so why should .NET developers pay any attentio
Multi-Value All The Wasm! – Mozilla Hacks - the Web developer blog
This article is cross-posted on the Bytecode Alliance web site. Multi-value is a proposed extension to core WebAssembly that enables functions to return many values, among other things. It is also a pre-requisite for Wasm interface types. I’ve been adding multi-value support all over the place recently: I added multi-value support to all the various crates in the Rust and WebAssembly toolchain, so
WebAssembly Interface Types: Interoperate with All the Things! – Mozilla Hacks - the Web developer blog
WebAssembly Interface Types: Interoperate with All the Things! People are excited about running WebAssembly outside the browser. That excitement isn’t just about WebAssembly running in its own standalone runtime. People are also excited about running WebAssembly from languages like Python, Ruby, and Rust. Why would you want to do that? A few reasons: Make “native” modules less complicated Runtimes
Standardizing WASI: A system interface to run WebAssembly outside the web – Mozilla Hacks - the Web developer blog
Standardizing WASI: A system interface to run WebAssembly outside the web Today, we announce the start of a new standardization effort — WASI, the WebAssembly system interface. Why: Developers are starting to push WebAssembly beyond the browser, because it provides a fast, scalable, secure way to run the same code across all machines. But we don’t yet have a solid foundation to build upon. Code ou
The Power of Web Components – Mozilla Hacks - the Web developer blog
Background Ever since the first animated DHTML cursor trails and “Site of the Week” badges graced the web, re-usable code has been a temptation for web developers. And ever since those heady days, integrating third-party UI into your site has been, well, a semi-brittle headache. Using other people’s clever code has required buckets of boilerplate JavaScript or CSS conflicts involving the dreaded !
Developer Edition 44: New visual editing and memory management tools – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Chris H Great work, thanks for the best (and sexiest) browser! November 3rd, 2015 at 07:59 Samiullah Khan If you have hard time to find newly added measurement tools
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Pyodide Spin Out and 0.17 Release – Mozilla Hacks - the Web developer blog