Blog
Practical write-ups on the problems the tools here solve — why a file is too big, which format to pick, what a setting actually does. Every post ends with the tool that does the job, if we have one.
What Contrast Ratio Do You Need for Readable Text?
Four numbers cover every case, and the one most people get wrong is what counts as "large text".
Read ImagesHow to Reduce Image File Size (Without Losing Quality)
Most oversized images are oversized for one boring reason, and fixing it takes about thirty seconds.
Read ImagesPNG vs JPG vs WebP: Which One Should You Use?
One rule covers ninety per cent of cases, and the exceptions are worth knowing because getting it wrong is expensive.
Read SecurityPassword vs Passphrase: Which Is Actually Safer?
Four random words beat a short scrambled password. Four words you chose yourself beat almost nothing.
Read ImagesWhat Size Should Images Be on a Website?
Concrete pixel widths and file sizes for every common slot, and why the retina answer is not "double everything".
Read SecurityHow Long Would It Take to Crack Your Password?
The honest answer is "it depends who is attacking", and the spread between the best and worst case is about sixteen orders of magnitude.
Read DesignHEX, RGB and HSL: Which Colour Format to Use
They describe the same colours. The difference is that one of them you can edit by hand and the other two you cannot.
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