## Read the Original Article in English

This comprehensive guide about JPEG compression was originally written by **Christoph Erdmann** and is available in English on his website.

**→ [Finally understanding JPG (compress-or-die.com)](https://compress-or-die.com/Understanding-JPG)**

The Spanish version on this blog is a translation I made to make this excellent technical content accessible to Spanish-speaking readers.

### What You'll Learn

The original article provides an in-depth technical explanation of:

- How JPEG compression works at a fundamental level
- The DCT (Discrete Cosine Transform) process
- Chroma subsampling and its impact on image quality
- Quantization and how it affects file size
- Practical optimization techniques for web images

It's one of the most comprehensive and well-illustrated guides to understanding JPEG compression available online.