---
layout: default
title: Progressive & Interlaced
---
## Progressive & Interlaced Images
## Interlace `interlace`
The `interlace` parameter controls whether an image is rendered in a progressive or interlaced format. This feature enhances the loading experience of images, making them appear gradually as they are downloaded, which can improve the user experience on slower connections.
> Caution: For GIF/PNG, it can generate a slightly larger file size.
### Supported Formats
- **JPG**: The `interlace` parameter applies a progressive scan to JPG images.
- **PNG** and **GIF**: The `interlace` parameter enables interlacing for GIF/PNG images.
> Note: When `ext` is set to `.pjpg`, it will automatically generate a progressive JPG image, regardless of the `interlace` parameter.
~~~ html
~~~
