The biggest change to Snapchat in years wants to replace your camera roll

Snapchat has always been ephemeral by nature, but starting Wednesday the social network is going to let users save and revisit what they share in the app.

The feature is called Memories, and it's the biggest change since Snapchat introduced Stories in 2013.

Here's how it works:

Now you'll have the option to save any snap to a new gallery called "My Memories."

This is what a Memories gallery looks like:

You can browse by individual snaps you've saved or entire Stories.