When to compress? · Poster Print on Demand

When to compress?

Hi, Just getting my head in a spin about my workflow and wonder if any one can help. I think Printshrimp want JPGS under 50mb filesize sent to them.

Where do you make that final adjustment? I can get those files out of the Upscayl process if I reduce the file size with another tool. Or I think I can load a massive file in to Canva and reduce it during the output process to leave a 30mb file at 300 DPI.

But where is best to do it?

Thanks, David

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When to compress?