WEBP file format
| Extension | .webp |
| Category | images |
| Programs | Adobe Photoshop Picasa |
| Main program | Google Chrome |
| Description | Google developed the WEBP image format in 2010. According to their claims, this format can save files up to 34% smaller than JPEG or PNG files. It allows for saving images in both lossy and lossless compression. However, it is not supported by all image viewers. |
| Technical details | Lossy compression in this format is achieved through prediction. To compress an image, it is divided into blocks and predictions are made based on the surrounding blocks' pixels. The difference between the original image and the prediction is then encoded. The prediction is accurate enough to result in no noticeable difference from the original image, effectively reducing the file size. Conversely, lossless compression involves using previously examined parts of the image to reconstruct the remainder of the picture. |
| MIME type | image/webp |