636 Bytes: What Happens When You Stop Teaching RPA the Path
I sat in a room with a very large automation system and a very familiar problem: it had become fragile. The language came quickly. DOM. Timestamps.…
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What I gave up to run Spring static analysis in a browser
There is a question that costs me half an hour every time I have to answer it: If I change this controller method, what else breaks? The honest proc…
Four places ffmpeg.wasm fails silently in a Next.js app (and the fixes)
I shipped four browser-only video tools with ffmpeg.wasm: trim, compress, video-to-GIF and MP3 extraction. Files never leave the browser, nothing to…
Sandboxed Code Evaluation for AI-Generated Outputs — How I Built SafeCode Arena
The Problem: Candidate Code Without Trust You're using Cursor, Claude Code, or GitHub Copilot. The AI gives you three implementation options for the…
Building image & video conversion that never leaves the browser
How VisualRefiner converts HEIC, compresses images, and transcodes video with no server, no upload, and no account — using the Canvas API, WebCodecs…
FFmpeg.wasm in production: deadlocks, a 2 GB ceiling and a codec that lies to users
FFmpeg.wasm can hang forever with no error, no log and no way out except killing the tab. That happened to roughly one in ten heavy jobs before I sh…
Zero-Trust Microservices with WebAssembly (Wasm) Runtime Sandboxing
Zero-Trust Microservices with WebAssembly (Wasm) Runtime Sandboxing Architecture blueprint for running untrusted microservice code inside WebAssembl…
Extracting Matrix SDK into a Rust WASM Library
The Monolith Problem in Early Prototypes When building an ambitious application, it is tempting to put all code into a single repository. In early i…
Browser-Based Dev Tools: Why WebAssembly and Local Processing Actually Matter
TL;DR — Many "online calculators" send your input to a server. CompuTools runs CRC, JWT decode, file hashing, and more entirely in the browser (Rust…
I got tired of paywalls and forced signups for basic file tools, so I built BrowsersKit (100% client-side Wasm utilities)
Hello everyone! I hate limits and having to purchase a subscription or need to register a new account on site! I am sitting in a chair and my team l…
Why Rust and WebAssembly Are Replacing JavaScript for Heavy AI Workloads in 2026
Why Rust and WebAssembly Are Replacing JavaScript for Heavy AI Workloads in 2026 While JavaScript remains the reigning language for web UI rendering…
ShowDev: I built a bulk HTML-to-Markdown converter that runs entirely in the browser
Most HTML-to-Markdown tools handle one file at a time. You paste some HTML, get Markdown back, repeat. That works for a quick snippet but not when y…
Tired of JS for simple UI in Ruby?
Meet web_ruby_ui — write reactive client-side SPAs using 100% pure Ruby via WebAssembly. Features state management & VDOM diffing. Give it a try…
OCR and sign a PDF entirely in the browser — no upload, no server
Most "free online PDF" tools quietly upload your document to a server. For a signed contract or a scanned ID, that's the whole problem. So I built t…
Why SharedArrayBuffer forced me to delete every third-party script on my site
I wanted multithreaded ffmpeg running in a browser tab. What I got, several steps later, was a site with zero third-party scripts — no analytics ven…
Exploring WebAssembly on the Server: Beyond the Browser
I spent years building cloud services inside heavy virtual containers, but recently I deployed a backend microservice that booted in under two milli…
Four things that surprised me running Python in the browser
I built a debugging-practice site where student code runs entirely in the browser . Python via Pyodide , JavaScript in a worker. No server executes…
Exploring WebAssembly on the Server Beyond the Browser
After spending over seven years designing distributed enterprise backends using managed frameworks like C# and Java, I recently stepped outside my h…
Why I built a zero-upload, local-first browser video compressor (and why you should stop uploading your MP4s to remote servers)
As content creators, video editors, and developers, we compress files almost every single day. Whether you're exporting a 4K draft for a client, try…
Exploring WebAssembly on the Server: Beyond the Browser Sandbox
For nearly a decade, my mental model for deploying enterprise software has revolved around containers, which are lightweight packages that bundle an…
Paper Finder: A Free AI-Powered Research Tool and the 7-Second Freeze I Had to Debug
I built Paper Finder , a free tool that searches arXiv, Semantic Scholar, and Crossref at once, then re-ranks the results by semantic relevance. The…
How to achieve zero-copy streaming from hyper and h3-quinn into a Wasmtime Wasm component via wasi:http?
Hello everyone, I am currently building a high-performance API gateway that integrates business logic components—implemented via WASI and running wi…
Exploring WebAssembly Beyond the Browser: A Cloud Architect's First Look at WASI
For years, my day job has centered on enterprise cloud backends built around containers, which are isolated digital environments that package an app…
I shipped a neural-network opponent into the browser: no backend, no accounts, 120 ms per move
I have a side project: a four-in-a-row board game where the opponent is a neural network I trained myself. It has been on Google Play for a while, a…
How I Built a BRSTM Converter with WebAssembly — Technical Deep Dive
The Problem: No Browser-Based BRSTM Tool Existed Every existing BRSTM converter was a desktop app — BrawlBox for Windows, Looping Audio Converter (r…
Browser-Side File Conversion with WebAssembly
A few months ago, I needed to add file conversion to a web app — nothing fancy, just letting users drop in a file and get back a different format. M…
Zamin: A Scripting Language with a Rust-Based Bytecode VM and GPU-Accelerated ML
No install needed if you just want to poke at it — there's a playground that runs the whole thing in your browser: https://young-developer90.github.…
Your app has two caches. What if it only needed one?
Redis on the server, some state library in the browser, and a pile of hand-written sync between them. I got tired of writing that layer, so I built…
Reviving a 20-year-old BASIC — and getting it to run in the browser
First, go press a button Before the story, the thing itself. Open this in a browser tab: 👉 https://uglymike17.github.io/basic256/ That's the full BA…
Building a real-time browser MMORPG with Three.js, Rust/Wasm, and Durable Objects
Realm of Echoes is a real-time 3D fantasy MMORPG that runs in a normal desktop browser tab. Players can choose a Warrior or Mage and enter as a gues…