How to Optimise AI-Generated Images for Websites

AI image generation makes it easy to create dozens of visuals for products, posts, ads, landing pages, and experiments. The hard part comes after generation: turning those files into assets that real websites and platforms accept.

A good publishing workflow should answer five questions:

1. What size will the image actually display at?
2. Which format does the platform accept?
3. Is there a file-size limit?
4. Do the filenames make sense later?
5. Can you repeat the same settings for the next batch?

Keep The Original Generation

Treat the original AI output as a source file. Do not overwrite it with compressed website exports. Store originals in one folder, then create optimised copies in a separate output folder.

Resize Before Compression

Generated images are often larger than the page slot. If a blog card only displays at 800px wide, a 2048px export wastes bytes. Resize first, then compress.

Use the Image Resize Tool for a quick one-off resize.

Compress To A Real Target

If a CMS, marketplace, or email tool has a limit, use a target size. For example, compress the image towards 500KB rather than guessing quality settings by hand.

Use the Image Compressor for quick target-size tests.

Convert Delivery Copies

WebP is usually a good website delivery format when supported. JPG remains useful when a platform rejects WebP. PNG is better for transparency, interface graphics, and sharp text.

Use the PNG to WebP Converter when you need a smaller website copy from a PNG source.

Batch The Repeated Work

The value of a repeatable workflow grows when you generate or edit many images. ImgKit Pro’s Batch Image Converter is designed for that step:

node src/convert.mjs --input input --output output --formats webp --quality 82 --target-kb 500

That creates a predictable local workflow for generated image sets, store folders, and client handoffs.

FAQ

Why optimise AI-generated images before publishing?

Generated images are often larger than the place they will appear. Resizing, compressing, and converting them makes pages lighter and reduces upload friction.

Should AI-generated images be WebP?

WebP is a strong delivery format for many website images. Keep the original generation separately, then export a website-ready copy.

What is the best workflow for many AI-generated images?

Use a repeatable batch workflow: source folder, resize rule, output format, target size, filename rule, and a report.