Three ways to optimize/compress your images to improve WordPress load time:
- Open up Photoshop, export to Save-for-web, JPEG 50%.
- Save your image in the highest quality possible, go to ShortPixel’s online compress tool, and simply upload there.
- Download an image compression plugin that does it automatically from WordPress. I like ShortPixel but there are many others. They vary between free, paid, or freemium models. Again, I like ShortPixel.
A few notes about picking the right format:
- Photographic images and product images should always be in JPEG format. Avoid PNG format if you can since it’s usually a much larger size than JPEG format. You don’t really need PNG. Many of you pick it for transparency but you could just make a JPEG with the background you want.
- PNG’s are best for images using very few colors, but still too complicated to draw in CSS.
- WEBP is interesting. I don’t use it but feel free to give it a shot. I think more performance gains can be found somewhere else in website optimization.