Compress images for Omnisend.
Drop your photos and download them under 5 MB, the file-size limit in Omnisend's image rules. The quality is lowered first and the pixel dimensions only when needed; the photo is never cropped. It runs in your browser; nothing is uploaded.
Under 5 MB per image, saved as JPG
Limits come from each platform's own help pages, summarised in the guides (checked 24 September 2026).
What Omnisend asks for.
Source: Omnisend Help Center — Manage Your Image & GIF Library; Omnisend Email Builder: Items; Optimize Email Load Time; Troubleshoot WebP Images in Gmail; Edit Images with the Omnisend Image Editor; Get Started with the Omnisend Email Builder; Manage Your Brand Assets; Add & Configure Product Listing Item · checked 12 October 2026
Omnisend email images: JPEG, PNG, WebP or GIF, 5 MB maximum, under 2,000 pixels per side; the default email width is 600 pixels.
- Limit used
- Under 5 MB per image, saved as JPG
- Pixels kept
- A photo with a side over 1,999 px is scaled down to that limit first. The rules checked here state no minimum pixel size, so the tool stops before the photo falls under a quarter of its original width.
- Formats
- JPEG, PNG, WebP and GIF
- File size
- 5 MB maximum per uploaded image
- Size
- Images must be under 2,000 pixels in both width and height
- Product images
- A Product Listing block shows up to 12 products, with images pulled automatically from the store; the images are static once the email is created
Compressors by platform.
Compressing for Omnisend, answered.
What is the image file-size limit on Omnisend?
5 MB per image, according to the rules summarised in the Omnisend guide. This tool saves each photo as a JPG under that size.
Is JPG accepted on Omnisend?
Yes. The formats Omnisend lists are JPEG, PNG, WEBP, and GIF.
Does compressing for Omnisend change the pixel size?
Only when lowering the quality is not enough to get under 5 MB. A photo with a side over 1,999 px is scaled down to that limit first. The rules checked here state no minimum pixel size, so the tool stops before the photo falls under a quarter of its original width.
Where do these figures come from?
From Omnisend Help Center — Manage Your Image & GIF Library; Omnisend Email Builder: Items; Optimize Email Load Time; Troubleshoot WebP Images in Gmail; Edit Images with the Omnisend Image Editor; Get Started with the Omnisend Email Builder; Manage Your Brand Assets; Add & Configure Product Listing Item, read on 12 October 2026. Marketplaces update their rules; the official page is the final reference.
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