What image format should I use on my website?

AVIF first, WebP as a fallback, JPEG or PNG last, delivered through a picture element. SVG for logos, icons and line art. Getting the size right for each viewport saves more than the format choice, so do both.

Does my website need to be accessible?

Legally it depends on your market and sector; commercially it always pays. The European Accessibility Act has covered consumer e-commerce since June 2025, the UK Equality Act applies to service provision, and the work overlaps almost entirely with usability and SEO.

Why is my website slow?

Usually one of four things: unoptimised images, render-blocking CSS or JavaScript, a slow server response, or a framework executing before anything paints. Measure first — the cause is almost never what people assume, and fixing the wrong one changes nothing.

Performance

What should alt text say?

Describe what the image shows, for someone who cannot see it. If the image is a link, describe where the link goes. If it is purely decorative, use an empty alt attribute so screen readers skip it — but never omit the attribute entirely.

Answered by Anas Bin Masud 180 words 3 sections

By case

Case	What to write
Informative image	What it shows, as a normal phrase
Image that is a link	Where the link goes, not what the picture is
Decorative image	alt="" — empty, never omitted
Image containing text	The text itself, verbatim
Product photo	Product name plus the distinguishing detail

Why an empty attribute beats a missing one

With alt="" a screen reader skips the image silently. With no alt attribute, many screen readers announce the filename — so the user hears "I M G underscore four four seven one dot j p g", which is worse than nothing.

The SEO position, honestly

Alt text helps image search and contributes modestly to what a page is about. Writing it properly for accessibility produces the best version for search anyway. Keyword-stuffed alt text fails both purposes.

The longer version

This answer is deliberately short. If you want the full treatment, Image SEO: findable images that do not wreck your page speed covers it in about 3 minutes — free, ungated, written from client work.

Who answered this

Anas Bin Masud builds e-commerce sites and does technical SEO for businesses in the UK, Canada and Pakistan — fifteen live client sites, six of them stores taking real payments. These answers come from those projects rather than from a content brief. More about how I work, or ask me something directly.