ebann wrote in post #5690523
What's a simple way to obtain an avatar from a regular JPG that fulfills POTN's criterias: 80x80 pixels and 8KB filesize?
We first crop to a square format, then resize to 80x80, and then reduce the JPEG quality to the point it's less than 8KB? I tried that in Lightroom and it keeps generating 16KB files (at 10% JPEG quality). How can I get the right size?
Thanks
Here's a guide for the beginner...
Choose a reasonably square, sharp image to work with. Too rectangular and you'll lose valuable "pixel real-estate" and ultimately recognition of the image. A blurry or hard to distinguish image file is going to be even harder to make out once reduced. Use "Properties," "Get info" or a "Details" view to check image size.
Right click on the image. Click "Copy" then "Paste." Don't use "File" > "Save As..." because it is possible to reduce the quality of the image with the "Save As..." operation.
Open a powerful photo editor program like Adobe Photoshop or Corel PSP. Check the color space of your file and change it to RGB if it isn't already. Photoshop calls this "Mode"; find it under "Image" > "Mode."
Size the image to 72 dpi in the "Size dialogue" box. The longest axis (height or width, also referred to as Y and X respectively) of the image must be at or below the maximum allowed. Constrain proportions as you resample, and use the software's recommended setting for reduction. In Photoshop, use "Bicubic Sharper."
Clean up solid space if it's dirty or "noisy." Specks add unwanted size.
Save your image using "Save for web and devices..."
Beauty. It''ll be like 4k. Dead-easy.
If you don't have "Save for web and devices", another little trick is to use a basic image editor like Preview (Mac) or MSPaint.exe (PC). Just open it and save it again. Much smaller this time!