Testers Tools
(7)Device test tools that run in your browser — check your microphone, webcam, speakers, keyboard, mouse and screen before a call or after buying a device. Nothing is uploaded or recorded.
Device Test Check your mic, camera, speakers, keyboard, mouse & screen Microphone Test Test your mic with a live waveform, meter and playback Webcam Test Check your webcam picture, framing and resolution Speaker Test Test speakers/headphones — L/R channels, tones & sweep Keyboard Test Find a dead or stuck key on a visual keyboard layout Mouse Test Test mouse buttons, scroll & double-click drift Dead Pixel Test Fullscreen colour cycler to spot dead or stuck pixels
Frequently asked questions
Are my devices uploaded to a server?
No. Every Testers tool on PDFPowerHub runs in your browser — testing your microphone, camera, speakers, keyboard, mouse and screen all happen on your device, so your devices never leave it.
Do I need to install anything or create an account?
No install and no sign-up. Open the page and use any tool instantly — no limits and no watermarks.
Do these Testers tools work offline?
Yes. PDFPowerHub is a PWA, so once loaded the tools keep working with no internet connection.
Are these Testers tools free?
Yes — every tool in the Testers category is completely free, with no limits or watermarks.