Diagnostics

RunTheTests

Hundreds of diagnostic tools that run entirely in your browser: printer test pages, device and connection checks, privacy audits. Nothing to sign up for, install or upload.

A hand holding a freshly printed printer test page, carrying CMYK colour bars, nozzle-check line patterns, a greyscale ramp, an alphabet and numerals row and a QR code, in front of a desktop monitor showing the same page open on runthetests.com, with an inkjet printer beside it.

Visit site

What defines it

Printer test pages, plus 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

Other brands

FinToolSuite

Personal finance and investment calculators that remove the guesswork.
FireMathLab

FIRE and retirement-date calculators that show their working.
BuildMetricLab

Construction and engineering calculators for faster, sharper estimates.
FitMetricLab

Fitness and health metric tools that turn data into progress.
PrintablesWorld

Printable kits, planners, puzzles, and smart PDF utilities.
MotorMath

Pure-math car calculators for total cost of ownership and EV comparison.
PlainEstimate

Estimates and invoices that stay on your own machine.
Expense Diary

A local-first spending diary for iPhone, iPad and Android: safe to spend, bills, jars, reports and a road to financial independence.
Plain Estimate: Invoice Maker

Quote at the door, get it signed on the spot, invoice it later. No account, nothing capped, and your documents stay on your phone.