# Toolhouse

> Free browser tools. No sign-up, nothing uploaded.


## Posts

- [Seven JSON mistakes and how to fix each one](https://toolhouse.site/json-mistakes/): JSON looks like JavaScript, but its rules are stricter. Most parse errors come from the same handful of slips.
- [Colour contrast: choosing text colours people can read](https://toolhouse.site/colour-contrast/): Low contrast is one of the most common accessibility failures on the web. The test is a single ratio, and fixing a colour usually takes one step.
- [Metric and imperial: the conversions worth knowing](https://toolhouse.site/metric-imperial/): Exact definitions, quick mental shortcuts, and the same-name units that are different sizes in the US and UK.
- [What a loan really costs: the formula behind the monthly payment](https://toolhouse.site/loan-formula/): A quote leads with the monthly payment. The interest total, the early-years split and the term you choose matter just as much.
- [Why a long password beats a clever one](https://toolhouse.site/long-passwords/): Swapping an a for an @ fools nobody. Length and true randomness are what slow an attacker down, and the maths is easy to check.

## Pages

- [Home](https://toolhouse.site/)


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