Where is the 640×360 format used?
This 16:9 image is typically used in email as a video preview, complete with a play symbol and a link through to a landing page. It suits templates built slightly wider than the classic 600 pixels.
How much copy fits into 640×360?
| Headline (recommended) | 40 characters |
| Subline useful | — |
| Product image useful | ✓ |
| Target file size | ≤ 80 KB (JPG) |
Little copy but an unmistakable play symbol, so the image reads as a video at a glance.
Related sizes
Design tips for 640×360
- ✓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 Hero | 600×300 | |
| Newsletter Tile | 600×400 | |
| Retina Header | 1200×400 | |
| Newsletter Module | 300×300 | |
| Newsletter Footer | 600×150 |
Frequently asked questions
- Can I embed a video directly in an email?
- Not reliably, since most mail clients will not play it. The established approach is a still frame with a play symbol linking to the video page, and this format exists for exactly that.
- Why 640x360 rather than 600 wide?
- Because 640x360 is exactly 16:9 and derives straight from existing video stills or thumbnails. In a 600 pixel template it is simply scaled down proportionally.
- Which file format and file size?
- myfeedr delivers 640×360 as PNG (lossless) and JPG. For trafficking, the JPG is what counts: around 80 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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