PDF is a vector format for printing at any size, PNG is raster with fixed resolution. PDF scales without loss, PNG opens faster.
| Criteria | PNG | |
|---|---|---|
| Scaling | ✓ | ✗ |
| Quick viewing | ✗ | ✓ |
| Print quality | ✓ | ✗ |
| Social media | ✗ | ✓ |
| File size | Medium | Depends on resolution |
For poster printing, A3/A0, documentation, print shops.
For social media, messengers, embedding in presentations.