Newsletter images that load fast and look sharp
Save photos as JPG at twice your template’s width, keep logos as PNG and shrink GIFs without losing frames. Campaign images are processed in your browser and never uploaded.
Recommended settings
Settings for each image in a campaign
Start from the linked preset and change only the settings listed. For several images, enter a resize value as both Max width and Max height; for “wide” rows, set Max width and leave Max height empty. For one image, type it as the width for “wide” rows, or as the longer side.
| Image | Format | Goal | Resize | Start from |
|---|---|---|---|---|
| Full-width hero and header imagesTwice a 600 px template, so they stay sharp on high-density screens. | JPG | Quality 75 | 1200 px wide | Compress images for email |
| Two-column and product grid imagesTwice a 300 px column. | JPG | Quality 75 | 600 px wide | Compress images for email |
| Logos, icons and buttonsPNG keeps transparency and crisp edges. Export at twice the displayed size. | Same (PNG) | Quality 80 | Off | Compress PNG images |
| Animated GIFsEvery frame is kept. Some email clients show only the first frame, so put the key message there. | Same (GIF) | Quality 70 | 600 px wide | Compress animated GIFs |
| Photos attached to a one-to-one emailThe email preset as it is. Several photos fit in one message. | JPG | Quality 75 | 1600 px | Compress images for email |
| Images with a size capIf your email platform limits each image, enter its current limit. | JPG | Exact file size: the platform’s limit | 1200 px wide | Compress an image to any size in KB |
Full-width hero and header images
Twice a 600 px template, so they stay sharp on high-density screens.
- Format
- JPG
- Goal
- Quality 75
- Resize
- 1200 px wide
Two-column and product grid images
Twice a 300 px column.
- Format
- JPG
- Goal
- Quality 75
- Resize
- 600 px wide
Logos, icons and buttons
PNG keeps transparency and crisp edges. Export at twice the displayed size.
- Format
- Same (PNG)
- Goal
- Quality 80
- Resize
- Off
Animated GIFs
Every frame is kept. Some email clients show only the first frame, so put the key message there.
- Format
- Same (GIF)
- Goal
- Quality 70
- Resize
- 600 px wide
Photos attached to a one-to-one email
The email preset as it is. Several photos fit in one message.
- Format
- JPG
- Goal
- Quality 75
- Resize
- 1600 px
Images with a size cap
If your email platform limits each image, enter its current limit.
- Format
- JPG
- Goal
- Exact file size: the platform’s limit
- Resize
- 1200 px wide
Why JPG and not WebP: email clients differ in which formats they display, and JPG, PNG and GIF are the safe choices. Graviton can save WebP or AVIF, but test them before you send them to a list.
Workflow
Campaign images in six steps
- 1
Know your template width
Many email templates are 600 px wide; check yours. Export each image at twice the width it is shown at, so it stays sharp on high-density screens.
- 2
Compress the photos
Open the email preset and set the width to 1200, or 600 for columns; with several images, clear Max height too. JPG at quality 75 suits most campaign photos.
- 3
Compress logos and GIFs
Run logos and icons through Compress PNG, and animations through the GIF compressor. PNGs keep their transparency; GIFs keep every frame.
- 4
Check one up close
Drop in a single image to get the before-and-after slider. Look closely at any text in the image, which shows compression first.
- 5
Download with the same names
Download files one by one or as a ZIP. Names are kept with the new extension, so it is clear which image goes where in the template.
- 6
Send a test
Upload the images to your email platform and send a test to a few inboxes, on phone and desktop, before the campaign goes out.
Why marketers use it
Lighter emails, same look
Safe formats for email
JPG, PNG and GIF, the formats email clients display most reliably.
A faster first view
Images download when the email opens, often on mobile data. Smaller files mean readers see your message sooner.
GIFs keep their animation
Graviton re-encodes every frame and keeps the timing. Set a quality, or a maximum file size the GIF must fit under.
Campaigns stay private
Images are compressed in your browser and never uploaded, so unannounced offers stay private until you publish them.
No hidden metadata
Images are saved without EXIF, GPS or camera data by default, so photos from staff phones don’t carry a location.
A whole campaign at once
Compress up to 250 images per batch, then download them one by one or as a ZIP: 3 a day on Free, unlimited on Pro.
FAQ
Questions from email marketers
Can I use WebP or AVIF in email?
You can, but support differs between email clients, so JPG, PNG and GIF are the safe choices. If you try WebP, test it in the clients your audience uses before sending to your list.
What width should email images be?
Twice the width they are shown at. In a 600 px template, that means 1200 px for full-width images and 600 px for images in two columns.
How large can email images be in KB?
There is no single rule, and email platforms set their own limits, so check your platform’s current guidance. Keep each image as small as it can be while it still looks right; the Exact file size goal can enforce a ceiling.
Will my GIF still animate?
Yes. When a GIF stays a GIF, Graviton keeps every frame and its timing. Converting a GIF to another format keeps only the first frame.
Is the email preset meant for newsletters?
It is set up for attaching photos to an email: JPG, quality 75, 1600 px. For newsletter images, keep JPG and quality 75, and change the width to 1200 or 600.
Get your next campaign’s images ready
JPG, PNG and GIF, sized for email, without uploading a single file.
Compress images for email