To ensure your SMS messages are successfully delivered, Endear automatically compresses all images and GIFs to meet SMS requirements. This article explains our approach and what you can expect.
How Compression Works in Endear
All image and GIF attachments are automatically compressed when added to an SMS message
We use a best effort approach to maintain quality while reducing file size
Compression is applied regardless of the original file size
Compression is based on the complexity of the image, not just the original file size
Size Limitations
While there isn't a file size limit we can specify (as compression results vary), be aware that:
Very large GIFs may not compress enough to meet SMS requirements
Complex images with many colors and details may be too large even after compression
The SMS channel itself (not Endear) ultimately determines what can be delivered
When Attachments Are Too Large
If an attachment is too large even after compression, Endear will automatically convert the attachment to a link. This ensures your message is delivered, even when the attachment exceeds SMS limitations
Best Practices When Sending Images and GIFs
Use simpler images when possible, images with fewer colors and details compress better
Avoid lengthy animated GIFs, shorter animations with fewer frames work best
Consider static images instead of GIFs for important visual content
For video content, consider a thumbnail image with a link to the content
Test your messages by sending it to yourself to verify how attachments appear
Is there a maximum file size I should use?
While there isn't a specific file size guarantee, starting with smaller, simpler images typically yields better results. However, remember that the final compressed size depends on the image complexity, not just the original file size.
Can I disable compression?
No, compression is necessary to meet SMS requirements and cannot be disabled. Without compression, most images and GIFs would fail to send entirely.
Still Need Help?
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