Omnisend image specs
Omnisend email images: JPEG, PNG, WebP or GIF, 5 MB maximum, under 2,000 pixels per side; the default email width is 600 pixels.
All Omnisend image requirements
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. Read again · 12 October 2026
- 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
- Email width
- The email canvas is 600 pixels wide by default and the width can be adjusted
- Display size
- Images cannot be displayed larger than the original uploaded file; uploading at the exact dimensions needed preserves quality
- Total email size
- Keep the total email size under 100 KB; Gmail clips larger emails
- Animated GIFs
- GIFs are supported; keep the file size under 1 MB, and editing a GIF in the Image Editor saves it as a static image
- WebP in Gmail
- Gmail converts WebP images to PNG or JPEG, which can flatten transparency or remove animation; use PNG for transparency, JPG for photos and GIF for animation
- 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
What Omnisend asks for, covered.
Omnisend takes images under 2,000 pixels in both width and height and up to 5 MB. Herofab's square 2K output is 2,048 × 2,048 pixels, just over that, so it is resized before upload; a 2K PNG can also exceed 5 MB, and the JPG download is the lighter file. The email canvas is 600 pixels wide by default, and an image cannot be displayed larger than the uploaded file. A Product Listing block pulls product images from the store automatically, so those follow the store's own images.
Resize below 2,000 pixels
Square 2K output is 2,048 × 2,048 pixels; Omnisend takes images under 2,000 pixels in width and height.
Lighter as JPG
Omnisend limits an uploaded image to 5 MB; the JPG download is lighter than the PNG.
Store images flow in
A Product Listing block pulls images from the store automatically.
Omnisend, answered.
What image size is right for Omnisend?
Omnisend email images: JPEG, PNG, WebP or GIF, 5 MB maximum, under 2,000 pixels per side; the default email width is 600 pixels.
Which image formats can be used for Omnisend?
JPEG, PNG, WebP and GIF. 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.
How large can an image file be for Omnisend?
5 MB maximum per uploaded image. 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.
Can I check my images before uploading?
Yes. The free image size checker reads each file in your browser and tests it against these rules; the image is not uploaded.
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. Platforms update their specs; the official page is the final reference.
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