A process of reducing a file's size without losing any pixel information

The process you're referring to is known as "lossless compression". Here are the steps:

1. Identify the file that you want to compress. This could be an image file, a video file, or any other type of file that contains pixel information.

2. Use a lossless compression algorithm or software. There are many different types of lossless compression algorithms, but they all work on the same basic principle: they identify and eliminate statistical redundancy in the file's data.

3. Run the file through the lossless compression algorithm. The algorithm will analyze the file's data and find ways to represent the same information in a more efficient way. This might involve grouping similar data together, eliminating unnecessary data, or finding other ways to reduce the file's size.

4. Save the compressed file. The original file will remain unchanged, but you'll now have a new, smaller file that contains all the same information.

5. To use the compressed file, you'll need to decompress it first. This is because the data in the compressed file is stored in a way that's efficient for storage, but not for use. The decompression process reverses the compression process, returning the file to its original size and format.

Remember, the key feature of lossless compression is that no information is lost during the compression process. This makes it ideal for files where every bit of data is important, such as high-quality images or audio files.