Photoshop Mobile: What are the differences between Standard, Optimized, or Progressive JPEG formats

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In Publish and export, JPEG options include Standard, Optimized, or Progressive formats. I can’t find any documentation on these settings. What’s the difference between them?

Also, I’ve exported an image using each one of these, and I don’t notice any differences. Do these settings actually work, or are they just placeholders?
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Ralph Mastrangelo

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Posted 4 months ago

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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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https://helpx.adobe.com/photoshop/using/saving-files-graphics-formats.html#save_in_jpeg_format

Format Options

Specifies the format of your JPEG file. Baseline (“Standard”) uses a format recognized by most web browsers. Baseline Optimized creates a file with optimized color and a slightly smaller file size. Progressive displays a series of increasingly detailed versions of the image (you specify how many) as it downloads. (Not all web browsers support optimized and Progressive JPEG images.)

You probably won't see progressive with fast, broadband internet - but you may see a small difference in files size.