DEV Community: devicexa

Count Spacebar

devicexa — Sun, 22 Mar 2026 07:29:42 +0000

Test Now

Why do you need a spacebar counter?
There are some real reasons to use a spacebar counter:

To count something. When some event happens you just press the spacebar. You don’t have remember the number or even look at the screen.

To check how fast you can press the button. In that case you need a stopwatch, or you can use our spcebar speed test.

To train yourself or to check how your space key works.

But really, no reason is needed.

How does a spacebar counter work?
Open this page and start pressing the space bar button. That's it. To set the counter to zero click "reset" button.

You can enter any number to start counting from it. And if you close the page, the number will be saved until you open it again.

Gamepad Online Tester

devicexa — Fri, 20 Mar 2026 15:32:33 +0000

Gamepad Tester and Debugger
When connected, this tool displays the current state of your gamepads, inputs, joysticks, and anything else that can be reported by the HTML5 Gamepad API. It also provides vibration controls and circularity tests for the analog sticks.

This is also useful for debugging drifting joycons, broken controllers, experimental hardware, and more.

Are you a developer interested in using the Gamepad API?

FAQ
Why isn't my gamepad showing up?

The Gamepad API is still inconsistent across browsers and OSes. Some things to check:

Is the device plugged in / connected via bluetooth

Press some buttons. On some devices, only certain buttons will wake up the gamepad API (the shapes on PS3 controllers, for instance)

Close other apps that may be using the gamepad

Restart your web browser

What information is being displayed here?

Multiple gamepads can be connected to a computer at once. This displays them all, and their current state.

Timestamp: the time of the latest update from the gamepad

Axis [N]: The current position of the gamepad's analog inputs

B [N]: The current on/off position of buttons. Supports analog buttons.

Does vibration work?

Vibration is supported in all modern browsers except Safari.

What about experimental features?

Features like Pose, HapticActuators, and others, are not widely supported yet.

Once browsers start supporting them, this page will be updated.

Why are the axis values weird?

Not all controllers are reported the same way, across devices, browsers, and OSes.

This site simply displays what the Gamepad API returns.

What is circularity?

"Test circularity" is a measure of whether the coordinates the analog sticks, at full deflection, go outside a bounding circle of radius 1.

GPU Stress Tester— Test Your GPU NOW!

devicexa — Thu, 19 Mar 2026 01:30:13 +0000

What is “Stress my GPU”?
“Stress My GPU” is a free online GPU (and CPU) stress testing and benchmarking tool. It’s web-based (using JavaScript and WebGL), meaning there’s no installation or downloading needed. I made this since I couldn’t find any GPU stress testing software that ran in the browser, without any plugins or executables.

What is this tool useful for?
The stress testing tool can be useful for checking whether an overclocked GPU is running stable over a longer period of time (a.k.a. without crashing / blue screening your operating system) and to see how your GPU, CPU and PC handle thermal loads (as in their ability to cool themselves while running at peak performance). If you really want to test your computer’s fans (or just use your PC as a really expensive heater), you can even stress test the GPU and CPU at the same time.

Write on Medium
The benchmarking tool can be used to measure a GPU’s (and CPU’s) performance relative to other devices as well as for detecting performance degradation due to inadequate cooling or hardware malfunctions. Since the benchmark measures your GPU’s or CPU’s ability to do highly parallelizable math calculations, it could be useful for quickly comparing the performance of running similar workloads (e.g. GPU-based cryptocurrency mining) between different devices.

Does the stress test have any limitations?
Since “Stress My GPU” is web-based, it’s restricted to what the browser you’re using thinks is OK for a regular website to do. So while the stress test can indeed max out your GPU’s processing utilization, it has limited ability in pushing every single part of your GPU to its maximum limit all throughout the stress test. Due to the aforementioned restrictions, testing multiple devices would require you to run “Stress My GPU” on multiple browsers, each of them using a different GPU (or CPU).

What about the benchmarking tool?
The benchmarking tool faces the same restrictions imposed by browsers that the stress testing tool does. In addition, different browsers may be better or worse at running the benchmark’s code and as such yield higher or lower scores with the same GPU (or CPU). Furthermore, the tool is focused at measuring the performance of a very specific highly parallelizable math computation. Said computation workload is also synthetic (meaning it’s not necessarily indicative of real world workloads). So if you’re serious about measuring the performance of your devices, this application shouldn’t be treated as the be-all-end-all source of truth but as a quick indicator used as part of a larger benchmarking effort.

Bottleneck Calculator - Check CPU GPU Compatibility

devicexa — Tue, 17 Mar 2026 17:22:33 +0000

CPU and GPU Bottleneck Scenarios
Here are common CPU and GPU utilization scenarios. Recognizing these patterns can help you identify hardware bottlenecks or understand whether a game or program depends more on one component:
Low CPU usage and low GPU usage
Low CPU usage and low GPU usage
When both CPU and GPU usage are low, the task is not demanding. This often happens in light games or low-detail settings. The system has plenty of resources for smooth gaming and multitasking.
Low CPU usage and max GPU usage
Low CPU usage and maximum GPU usage
Low CPU and maxed-out GPU mean the workload is highly graphics-intensive. Your graphics card is the limiting factor. Upgrading the GPU or lowering graphics settings can help improve performance.
High CPU usage and max GPU usage
High CPU usage and maximum GPU usage
High CPU with maxed-out GPU indicates both components are working hard, with a possible slight GPU bottleneck. The system is well balanced, but the graphics card is close to its limits.
Max CPU usage and low GPU usage
Maximum CPU usage and low GPU usage
Here, the CPU is a bottleneck. The processor is at 100%, but the GPU is underused. This setup happens with CPU-heavy tasks or software. Consider upgrading the CPU for better performance.
Max CPU usage and high GPU usage
Maximum CPU usage and high GPU usage
Both CPU and GPU are working hard, with the CPU maxed out. It’s close to a balanced load, but your CPU may be slightly limiting performance.
Max CPU usage and max GPU usage
Maximum CPU usage and maximum GPU usage
With both CPU and GPU at 100%, your system is fully utilized. This is normal in very demanding workloads or games. Ensure you have proper cooling to avoid overheating.
Conclusion
Large differences in component usage may signal a bottleneck or simply reflect the nature of the software you are running. Monitoring these patterns helps identify system issues and optimize your hardware.

Bottleneck Calculator - Check CPU GPU Compatibility

devicexa — Mon, 16 Mar 2026 12:11:34 +0000

Click Here To Test Bottleneck Calculator (Server 1)
Click Here To Test Bottleneck Calculator (Server 2)

Low CPU usage and low GPU usage

Low CPU usage and low GPU usage
When both CPU and GPU usage are low, the task is not demanding. This often happens in light games or low-detail settings. The system has plenty of resources for smooth gaming and multitasking.

Low CPU usage and max GPU usage

Low CPU usage and maximum GPU usage
Low CPU and maxed-out GPU mean the workload is highly graphics-intensive. Your graphics card is the limiting factor. Upgrading the GPU or lowering graphics settings can help improve performance.

High CPU usage and max GPU usage

High CPU usage and maximum GPU usage
High CPU with maxed-out GPU indicates both components are working hard, with a possible slight GPU bottleneck. The system is well balanced, but the graphics card is close to its limits.

Max CPU usage and low GPU usage

Maximum CPU usage and low GPU usage
Here, the CPU is a bottleneck. The processor is at 100%, but the GPU is underused. This setup happens with CPU-heavy tasks or software. Consider upgrading the CPU for better performance.

Max CPU usage and high GPU usage

Maximum CPU usage and high GPU usage
Both CPU and GPU are working hard, with the CPU maxed out. It’s close to a balanced load, but your CPU may be slightly limiting performance.

Max CPU usage and max GPU usage

Maximum CPU usage and maximum GPU usage
With both CPU and GPU at 100%, your system is fully utilized. This is normal in very demanding workloads or games. Ensure you have proper cooling to avoid overheating.

Conclusion
Large differences in component usage may signal a bottleneck or simply reflect the nature of the software you are running. Monitoring these patterns helps identify system issues and optimize your hardware.