Built by someone who was doing it by hand

SellSidekick started as a private script. Preparing one print listing meant exporting the same artwork at eight different aspect ratios, dropping it into mockup templates one by one, then writing a title, thirteen tags and a description that would actually get found. An evening per listing, most of it mechanical.

The tool automated that sequence, and it turned out other sellers were losing the same evenings. That is the whole product: the boring half of listing a print, done in about a minute, with the files you would have produced yourself.

What it will not do

It does not invent reviews, it does not promise rankings, and it does not train anything on your artwork. Your uploads produce your files and are deleted when you delete them.

Printify cannot accept custom mockups through its API, so if you sell physical prints there, uploading your own product photos stays a manual step. That is a limit of their platform, and it is written here rather than discovered after you have paid.

Who you are talking to

SellSidekick is run as a one-person business, not a company with a support desk. Email hello@sellsidekick.com and the reply comes from the person who wrote the code.