Laptops Special
Free browser tools to test your keyboard, mouse & monitor
What it does
Most keyboard, mouse, and monitor testers give you one number and stop there. Laptops Special measures jitter, stability, and consistency - not just pass/fail - and explains what each number actually means. It's upfront about what a browser can and can't measure, unlike most testers that present every reading as gospel. 5 free tools: keyboard latency, mouse polling rate, monitor refresh rate, screen/dead-pixel test, and webcam/mic/speaker test. No signup, runs 100% locally in your browser.
All free browser-based hardware testing tools in one place. Test your keyboard latency, mouse polling rate, and monitor refresh rate — no downloads, no signup.
Not just pass/fail testers — these tools measure jitter, stability, and consistency, explain what the numbers actually mean, and are upfront about what a browser can and can't measure. Test your keyboard, mouse, and monitor instantly, no downloads required. Don't know if it's a hardware fault or a settings issue? Follow this in under 2 minutes. Most online testers give you one number and stop there. Ours are built to be measurement instruments, not just pass/fail checkers. Every browser-based test has real limits — event coalescing, OS scheduling, and background CPU load can all affect a reading. We'd rather explain that than hide it behind a single impressive-looking number. Most keyboard,…from laptopsspecial.com
Does the same job
all alternatives →More dev tools this month
the category →



Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com

Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com