THE KNOWLEDGE LIBRARY
Image & PDF guides
Practical answers on file size, formats and resolution, with real numbers and honest limits.
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PNG vs JPG vs WebP: Which Image Format Should You Use?
Transparency, quality and measured file sizes.
Email Attachment Size Limits
Gmail, Outlook, Yahoo and iCloud limits, and how to fit under them.
AI Image Upscaling: What It Can and Can't Do
What the technology really does, and its limits.
How to Reduce PDF File Size
Shrink scanned PDFs, and when it backfires.
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