About Fastly Image Optimizer
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Fastly's Image Optimizer (Fastly IO) is an image optimization service that manipulates and transforms your images in real time and caches optimized versions of them. When an image is requested from your origin server, Fastly IO can perform one or more transformation tasks before serving and caching the optimized version. For example, you can resize, adjust quality, crop and trim, serve responsive images, and more.
WARNING: Only send image content through Fastly IO. Non-image content can't be optimized using it, but will still be counted and charged as an image optimization request, which may cost you more.
Prerequisites and considerations
Before you begin using Fastly IO, keep the following in mind:
- Fastly's Image Optimizer is disabled by default. Anyone assigned the role of superuser can enable Image Optimizer from the Service configuration tab or on the Products page.
- Services that use image optimization require shielding. When enabling IO, select a fallback location that's as geographically close to your image's origin as possible. This will help determine the optimal shield location for any requests for Image Optimizer transformations that need to go back to an origin that doesn't have shielding enabled. Check out our shielding guide to learn more about how shielding works.
- Some features, like AVIF and JPEGXL encoding format, may require an account upgrade. Existing customers can contact sales@fastly.com for more information on pricing, features, and account upgrades.
What's next
Follow our guide to learn how to enable and start using Fastly IO.
NOTE:
This article describes a product that may use third-party cloud infrastructure to process or store content or requests for content. For more information, check out our cloud infrastructure security and compliance program.
