---
title: Lightening Your Responsive Website Design With RESS
description: RESS offers a way to get the best of RWD and server-side device detection resulting in significant performance improvements over ‘classic’ RWD.
---

# A Step-by-Step Guide To Image Optimization For Mobile

Websites are often bloated with heavy images which make browsing on-the-go a very disappointing experience. Get this short guide to learn how to optimize images for mobile with three easy steps, four lines of code and one line of configuration.

![Image Optimization12-1](https://info.deviceatlas.com/hubfs/Image%20Optimization12-1.png)

## Download the whitepaper to discover how to:

![Mobile Network](https://info.deviceatlas.com/hs-fs/hubfs/Mobile%20Network.png?width=98&height=75&name=Mobile%20Network.png)

Reduce the size of images sent to mobile devices using server-side components.

![detection](https://info.deviceatlas.com/hs-fs/hubfs/DeviceAtlas_August2021/detection.png?width=133&height=85&name=detection.png)

Implement RESS in your web design.

![Amazon](https://info.deviceatlas.com/hs-fs/hubfs/DeviceAtlas_August2021/Amazon.png?width=98&height=88&name=Amazon.png)

See how RESS fares in comparison to 'classic RWD'.

![rapidly increasing](https://info.deviceatlas.com/hs-fs/hubfs/DeviceAtlas_August2021/rapidly%20increasing.png?width=91&height=91&name=rapidly%20increasing.png)

Increase speed over classic RWD.