Image optimization API
Featherweight images, every pixel that matters.
helloIMG converts, compresses, and smart-crops your images in the background — WebP, AVIF, and beyond. Use it as an API directly, through the LW Image WordPress plugin, or add AI alt text, SEO metadata, and background removal on top.
Find your way in
Six pages cover the whole surface, from installing the WordPress plugin to generating AI alt text.
Upload once, get back a smaller image
Every optimize call runs the same way: send an image, get a job back, poll until it's done — or let the request wait for you.
Upload
Send the image as multipart/form-data to /v1/optimize with your API key. helloIMG checks the cache and starts processing it in the background.
Process
The image is compressed at the level you asked for — normal, aggressive, ultra, or lossless — and converted to the target format if you asked for one.
Poll or wait
Pass ?async=true and poll /v1/jobs/{job_id} yourself, or leave it out and the request blocks until the job finishes (or times out).