Miscellaneous & Browser API Tools
16 tools · 16 available now
Hardware tests, browser info, recorders, and reaction games that tap directly into modern Web APIs.
Voice Recorder
Record audio with your microphone.
Screen Recorder
Record your screen straight from the browser.
Webcam Test
Check that your webcam is working.
Microphone Test
Check that your microphone is picking up sound.
Speaker & Audio Test
Test your speakers and audio channels.
Screen Resolution Checker
Check your screen resolution and pixel ratio.
Browser Info Viewer
See what your browser reveals about your device.
Battery Status Checker
Check your device's battery level and charging state.
Geolocation Viewer
View your device's raw GPS coordinates.
Click Counter & Tally
Keep a running tally with a simple click counter.
Typing Speed Tester
Measure your typing speed and accuracy.
Click Speed Tester
Measure your clicks per second.
Reaction Time Tester
Test how fast your reflexes are.
Memory Game
Play a quick card-matching memory game.
Tab Title Changer
Change the title shown on this browser tab.
Favicon Emoji Setter
Set an emoji as this tab's favicon.
About miscellaneous & browser api tools
Modern browsers expose a surprising amount of capability, and ToolJutsu's miscellaneous category puts it to work. Test your webcam, microphone, and speakers, record voice or screen, check screen resolution and battery status, and play quick reaction and memory games. These tools use Web APIs such as MediaRecorder and getUserMedia, which always ask for your permission first and stream nothing off your device.
Every tool in this category runs entirely on your device. Your files and inputs are never uploaded to a server — there is no server in the loop that touches your data. That makes ToolJutsu a genuinely private way to get everyday tasks done. New tools in this category go live as the project progresses; cards marked “Soon” are on the roadmap.