1. Fix the exposure
If your photo is too dark or too bright try www.picnik.com to fix the exposure. If you need more colour effects try www.pixlr.com/editor.
2. Crop and resize
Rotate, resize and crop your images with www.picnik.com.
It’s better to crop images instead of overly reducing them.
3. Save your image
Save photos on www.picnik.com as JPGs and choose a compression quality of about 60%. A small image should not be larger than 30 kB. If you want to show a large, high quality photo you can use 200 kB.
Save illustrations, diagrams, logos and icons or images with a large area of single colour as a GIF.
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You will have to edit your photos and graphics to show them on the web:
- Crop your images instead of overly reducing them.
- Use the additive RGB colour model. Avoid the CMYK colour model; it’s only for print.
- Reduce your image to a resolution of 72 to 96 pixels per inch (ppi).
- Compress images. A normal image should not be larger than 30 KB. A high quality photo should not be larger than 200 KB.
- Save your images in the GIF or JPEG format.
When to use the GIF format
Use the GIF format for illustrations, diagrams, logos, and icons. Don’t use it for photographs. It can only display 256 colours, which is not enough for photographic images. GIF offers:
- lossless compression
- small file size
- 256 colours
When to use the JPEG format
Use the JPEG format (also called JPG) for photographic and greyscale images. Don’t use it for illustrations and pictures with a large area of a single colour. JPEG offers:
- 16.8 million colours
- high image quality
- huge compression ratios for faster download
- valuable compression with a degree from 0 to 100% of quality to choose from