# Introduction
Images.weserv.nl is an image cache & resize service. Our servers resize your image, cache it worldwide, and display it.
- We support a good range of image formats, including JPEG, PNG, BMP, GIF, TIFF, WebP, PDF and SVG.
- There's even support for animated WebP and GIF images.
- We support IPv6, serving dual stack, and supporting IPv6-only origin hosts.
- For secure connections over TLS/SSL, you can use https://images.weserv.nl/.
- This can be very useful for embedding HTTP images on HTTPS websites. HTTPS origin hosts can be used by prefixing the hostname with https://.
- The CDN is provided by Cloudflare. Images are being cached and delivered straight from
190+ global datacenters. This ensures the fastest load times and best performance.
# How it works
You pass the image URL and a set of parameters. images.weserv.nl will then fetch the image, resize it, cache it and display it. The next time the request comes, it will serve the cached version.
<!-- images.weserv.nl/lichtenstein.jpg -->
<img src="//images.weserv.nl/?url=images.weserv.nl/lichtenstein.jpg&w=300&h=300">