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PNG vs JPEG for PDF pages: the chart page agreed, the text page didn't

"Save text as PNG, it's smaller than JPEG" is a rule of thumb for storing PDF pages as images, whether that's lecture slides for revision notes or a paper's figures.

  • PNG generally smaller than JPEG for chart page (127,051 bytes vs 178,232 bytes)
  • Dense text page 5% larger in PNG (838,404 bytes vs 796,608 bytes)
  • Lossless WebP smallest file for both text and chart pages

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