Guides
Practical guides
Short, specific write-ups about doing these jobs well — written by the people who run the tools.
How to compress images without visible quality loss
Where the real savings are, and which quality setting to stop at.
WebP vs AVIF vs JPG: which should you actually ship?
A short decision table you can apply in ten seconds.
Round avatars that do not look jagged
Why most circle crops look cheap, and the two settings that fix it.
Watermarking without ruining the photo
Position, opacity and size — and when not to watermark at all.