Diagnostics

RunTheTests

Hundreds of diagnostic tools that run entirely in your browser—printer test pages, device and connection checks, and privacy audits with no account, install, or upload.

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What defines it

Printer test pages and colour, alignment, and barcode checks

Device and connection diagnostics: webcam, mic, dead pixels, speed, DNS

Everything runs client-side, with honest notes on what a browser cannot measure

Featured tools

Printer Test Page Internet Speed Test Dead Pixel Test Webcam Test Microphone Test DNS Lookup

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