Image optimisation
WebP vs AVIF vs JPEG: which image format should you use?
A practical comparison of WebP, AVIF and JPEG for websites: which to use by default, where AVIF is worth the extra effort, and how to serve both with a fallback.
Topic
Image optimisation
How to choose, size and compress images so pages load fast and look sharp.
2 articles
Image optimisation
What favicon sizes do you actually need?
The short list of favicon sizes a modern website needs, what each one is for, the HTML to add, and what Google requires to show your icon in search.