Where is the 600×300 format used?
The standard header sits directly under the logo in an email and is the first image a recipient sees. The 2:1 ratio leaves room for real artwork without pushing the opening copy out of the preview pane.
How much copy fits into 600×300?
| Headline (recommended) | 50 characters |
| Subline useful | ✓ |
| Product image useful | ✓ |
| Target file size | ≤ 70 KB (JPG) |
A headline and a short subline work. Prices and legal copy belong in the HTML text below.
Related sizes
Design tips for 600×300
- ✓Always 600 px wide (1200 px for retina) — wider images are not scaled in Outlook.
- ✓Important copy belongs in the HTML text, not in the image: many clients block images at first.
- ✓Keep files small, ideally under 100 KB — email clients load all images at once.
More Newsletter formats
| FORMAT | SIZE | USE |
|---|---|---|
| Newsletter Header | 600×200 | |
| Newsletter Tile | 600×400 | |
| Newsletter 16:9 | 640×360 | |
| Retina Header | 1200×400 | |
| Newsletter Module | 300×300 | |
| Newsletter Footer | 600×150 |
Frequently asked questions
- What happens if the recipient blocks images?
- An empty area with the alt text remains. Write that alt text like a headline and repeat the core message in the HTML copy below, so the email still works with images off.
- JPG or PNG for an email header?
- JPG for photographic artwork, because the file stays smaller and many clients load slowly. PNG only pays off for flat colour, logos and hard edges, where it avoids the usual compression fringing.
- Which file format and file size?
- myfeedr delivers 600×300 as PNG (lossless) and JPG. For trafficking, the JPG is what counts: around 70 KB is a realistic target for this size – small enough for any network without visible quality loss.
- What does the format cost?
- Formats are not sold individually — :size is part of the "Complete" package from 349 €. Analysing your website is free.
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