I couldn't run Microsoft's Threat Modeling Tool on my Mac, so I rebuilt it for the browser
My cybersecurity course teaches threat modelling with Microsoft's Threat Modeling Tool (TMT). You draw a data-flow diagram of a system, and TMT gene…
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Processing Video in the Browser with ffmpeg.wasm: What Works and What Doesn't
Running FFmpeg inside the browser sounds like a dream. No upload, no server bill, no queue. The user picks a file, your page compresses it, done. ff…
Replacing ffmpeg.wasm with WebCodecs: a 1080p export from 10.3s to 2.6s
I maintain a browser-based video editor. Everything runs client-side — no upload, no server — which for a long time meant ffmpeg compiled to WebAsse…
How We Built an In-Browser 0.4s Lossless Video Trimmer with WebAssembly (and Zero Backend Servers)
Modern web video tools have a glaring architectural flaw: we are still transferring hundreds of megabytes over the public internet to perform basic…
Java WebAssembly Meets WebForms Core 2.2
WebAssembly allows applications written in languages other than JavaScript to execute directly in the browser. With WebForms Core 2.2, Java can also…
ffmpeg.wasm: "memory access out of bounds" is usually not about memory (and 4 more slideshow gotchas)
I spent three iterations getting a browser-only "photos to video" tool working on top of ffmpeg.wasm. Everything runs client-side, nothing is upload…
I rebuilt my 28-year-old IRC network from scratch in Go and WebAssembly
In 1998 I opened an IRC network for Turkish chatters called Yudum.NET . It started on HybridIRC, moved to UnrealIRCd, and for more than two decades…
The 7 Walls JavaScript Hits — and How WebAssembly Gets Past Them
Every time Figma renders a complex design instantly, or Google Sheets recalculates a huge spreadsheet without lag, or a Shopify store applies a cust…
Trimming Video in the Browser: Why "Precise" and "Fast" Give Different Cuts
There are two ways to cut a clip, and they answer different questions. A precise cut re-encodes the video, so the cut lands on exactly the frame you…
Why Your Video-to-GIF Conversions Look Dirty, and the Two-Pass Palette Fix
Most video-to-GIF conversions look dirty for one reason: they quantize every frame against a generic palette . A fixed 256-color table has no idea t…
Architecture Case Study: How HYNAWEB Operates a Global Developer Ecosystem With Zero Traditional Servers
Modern startups face a strucztural dilemma: infrastructure costs scale faster than revenue. Server provisioning, database maintenance, GPU clusters,…
How Teppe for Jira works under the hood
A few weeks ago I promised a technical write-up. Here it is. The two questions I get most are: how do you render tens of thousands of Jira issues in…
AssemblyScript WebAssembly Meets WebForms Core 2.1
What is WebForms Core? WebForms Core is a server-orchestrated UI technology that allows the server to generate commands for manipulating the browser…
How I Built a Free Sudoku Generation API with Rust and WebAssembly
How I Built a Free Sudoku Generation API with Rust and WebAssembly Sudoku looks simple — a 9×9 grid, digits 1 through 9, no repeats in any row, colu…
I downscaled a 1080p video to 480x270 to protect its quality
Someone handed my compressor a 1080p clip. It gave back a 480×270 postage stamp. Nothing crashed. Every line did what I wrote it to do. I had writte…
Building a Zero-Lag Client-Side Python Visualizer with Pyodide & WebAssembly
Understanding code execution, call stacks, and pointer mutations can be tricky—especially when debugging complex algorithms, recursion, or data stru…
How I Built 30 Privacy-First Dev Tools with Blazor WebAssembly (and Why Nothing Leaves Your Browser)
Every developer has done this at least once: you have a JWT from production, you need to see what's inside it, so you paste it into the first "JWT d…
Reviving 1,300+ 90s Chiptune & Tracker Hits in the Browser: WebAssembly, 3D Demoscene & AI
🕹️ Reviving 1,300+ 90s Chiptune & Tracker Hits in the Browser: WebAssembly, 3D Demoscene & AI Pair-Programming If you grew up during the 90s…
[Event Sourcing] Running an Existing C# Business Model on Wasm with SekibanWasmRuntime
In the previous article, we created a C# application using Sekiban DCB to handle students, classes, and class enrollment. This time, we will try run…
How to Find the Meaning of Life in 26 Seconds
I typed “The meaning of life” into a browser and, 25.7 seconds later, it answered The fine game of nil Not quite philosophy, perhaps—but it is an ex…
A legal FEN is not a game: state identity in a browser chess extension
Same FEN, different game If you key a chess overlay on FEN alone, two different games can look identical. Rematches are where this shows up. The sta…
I Made Four Authorization Engines Answer the Same Questions
"Which authorization engine should I use" always gets answered with a table. Cedar is analyzable, Rego is expressive, Zanzibar is relationship-based…
Memory64 moved the browser ceiling and exposed an ABI gap
A 32-bit WebAssembly heap put the browser playground near a 4 GB ceiling. With weights and AdamW state, that limited the fp32 model size to roughly…
A new WebAssembly runtime enters the arena... Is it worthy?
A few minutes ago, I released my brand-new WebAssembly runtime, Wago . There's one massive problem though. Wasmtime is mature, fast, and backed by t…
Seven practical SPFx WebAssembly samples for local data work
SharePoint Framework samples usually stop at the web part. This repository focuses on the harder browser boundary: what can safely happen locally be…
Ask canvas for a WebP in Safari and you silently get a PNG
Every browser-based WebP converter I looked at is built on one line: canvas . toBlob ( blob => { /* ... */ }, ' image/webp ' , quality ) It's a r…
Rust for Rust, JS for JS: introducing Ahoi
Why I built Ahoi When you want to manage data state in Rust/Wasm inside a web app, there have been two main options. Option 1: hand-roll the bridge…
Stop Writing Ruby Tests in JS Template Literals: Meet rspec-wasm
If you have built applications with ruby.wasm , you might have encountered a frustrating developer experience when writing unit tests. Testing Ruby…
Hitting an image size ceiling with Rust and WebAssembly
Many image tools expose a quality slider. Forms and government portals usually expose a different requirement: “the file must be under 100 KB.” Thos…
Break the Speed Limit: WebAssembly in Next.js & Rust 🦀
The JavaScript Compute Ceiling JavaScript is a miraculous language, but it was fundamentally designed as a dynamic, interpreted scripting language f…