Test Before You Buy

Free online testing tools to help you make confident purchases and prepare electronics for resale

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Popular Tools & Guides

Quick access to our most used testing tools and comprehensive guides

Most Popular Testing Tools

Dead Pixel Test Mic Test Touch Screen Test Color Test

Complete Buying Guide

3500+ word guide covering all devices: iPhones, iPads, Android phones, tablets. 47-point inspection checklist.

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Complete Selling Guide

Professional guide to maximize resale value. Data security, pricing strategies, and testing documentation.

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Testing Tools

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Screen & Display Tests

Test monitors for dead pixels, burn-in, color accuracy, and more

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Audio & Headphone Tests

Test stereo channels, frequency response, and microphones

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Input Device Tests

Test keyboards, controllers, and touchscreens

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Utility Tools

Color contrast checker and more helpful tools

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Everything you need to make informed purchasing decisions

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No hidden fees, no premium versions. All tools are 100% free to use.

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Get immediate feedback on your devices. No waiting, no downloads required.

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Avoid costly mistakes by testing before you buy. Make confident decisions.

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