The values you choose for optimization are completely dependent on the project at hand. Many web developers will vouch between 50% – 70% is a safe range to stick with. I added the possible JPEG values below – notice the inherent naming conventions.Įven in Adobe Photoshop 60% image quality is considered ‘high’. If you open the Save for Web dialog box in Photoshop you’ll notice they offer preset values you can choose from. Most times you’ll be recommended to save images much lower than 90% quality. It actually calculates through an optimization limit formula which increases your file sizes exorbitantly.Įven compared to 90% or 95% quality you’ll see a significant drop in file size. This will not produce the most possible “optimized” image. You should almost never save your JPEG images at 100% quality. Note: This post was first published on the 27th August, 2009.
A Beginner’s Guide to Web Optimization (Tips & Best Practices)
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