XotkaHow to Choose JPG, PNG or WebP When Compressing
The format you pick when compressing an image has a large effect on the final size and on how the image looks. Photos, sharp graphics, and images with transparency benefit from different choices.
Photos of people and scenes
For ordinary photographs, WebP or JPG usually produces a much smaller file than PNG at similar visual quality. WebP often wins on modern browsers; JPG remains the safest choice when the image must open everywhere, including older systems and email clients.
Graphics, logos and text
When the image contains sharp edges, text, or flat colours, PNG can look cleaner. It also supports transparency. The file may stay larger, so compress only as far as the quality still looks acceptable.
Practical decision steps
- Decide whether the image is mainly a photo or mainly a graphic.
- If it is a photo and does not need transparency, try WebP first, then JPG.
- If it needs transparency or sharp text, start with PNG and reduce quality only if the size is still too large.
- Always preview the result at the size it will be viewed.
Match the format to the content and the people who need to open it
Choose a format based on the image's purpose and destination rather than assuming one extension is best for every file. Photographs usually contain continuous tones and fine colour variation, so a lossy format such as JPG or WebP can reduce their size substantially. Logos, interface screenshots, diagrams, and text-heavy images often contain crisp edges that can become blurred or surrounded by compression artefacts. PNG may preserve those edges and transparency better, although the resulting file can be larger.
Check compatibility before selecting a newer format. A modern browser may display WebP or another efficient format without difficulty, while an older document system, email client, print workflow, or upload portal may accept only JPG or PNG. If the file will be sent to a group with mixed devices, choose the format that the receiving system explicitly supports. You can keep a high-quality master and export a smaller compatibility copy for the specific destination.
Transparency is another deciding factor. JPG does not preserve transparent backgrounds, so an image that needs a clean overlay may acquire a solid background if converted carelessly. PNG and some modern formats can retain transparency, but the destination must support it. Test the exported image against both light and dark backgrounds if the transparent edges are important. For print work, also check the required dimensions and colour workflow; a web-optimised file is not automatically suitable for professional printing.