Why won’t my logo upload?

Your brand kept the logo it had, or none. Jounce says what stopped the upload in a message at the bottom of the page.

Jounce says	What to do
That file isn’t an image. Choose a PNG, JPG, GIF, or WebP for your logo.	Export the logo as one of those. A PDF or a document won’t do.
That file is over the 10 MB limit. Choose a smaller one.	Export a smaller version. A logo shows at a modest width in email, so a huge file gains nothing.
Jounce couldn’t convert that SVG. Your brand kit is unchanged — export the logo as a PNG and upload that.	Open the SVG in your design tool and export a PNG.
Jounce turned that SVG into a PNG, and it’s over the 10 MB limit. Your brand kit is unchanged — export a smaller PNG and upload that.	Export a PNG yourself, at a smaller size.
That logo is over the 10 MB limit. Your brand kit is unchanged — choose a smaller one.	Export a smaller version.
That logo didn’t upload. Your brand kit is unchanged — try again.	The upload stalled, often a dropped connection, or the image is a kind email can’t use, such as HEIC or TIFF. Select Upload logo again; if it fails twice, export a PNG or JPG.

Why SVG is different

Mail apps don’t show SVG images, so Jounce turns an SVG into a PNG before it uploads. Most convert fine. One that doesn’t needs a PNG from you.

Once the file is right, the steps are in Upload your logo.