pnas-figure-guide
PNAS Figure Preparation Guide
Overview
This guide provides the complete specifications for preparing figures for submission to PNAS (Proceedings of the National Academy of Sciences). PNAS is notable for its strict RGB-only policy (CMYK submissions are returned), italicized uppercase panel labels, and automated image screening software.
Official reference: https://www.pnas.org/author-center/submitting-your-manuscript
Resolution Requirements
| Image Type | Minimum Resolution | Notes |
|---|---|---|
| Halftones (color/grayscale photos) | 300 PPI | At publication size |
| Combination artwork (MS Office) | 600-900 DPI | Mixed text and images |
| Line art (bitmap text/thin lines) | 1,000 PPI | At publication size |
| LaTeX figures | — | High-quality PDF or EPS |
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