Best t-shirt mockup websites: Number one is the Etsy Market, where you can find a huge selection in a wide variety of styles. While the price points vary, you can find a large number of affordable t-shirt mockups here.
Number two, Creative Market, which has a very large collection of high-quality mockups to choose from. Their licensing options can be a bit confusing, but their collection size is solid.
Number three, Creative Fabrica. If you’re looking for the lowest average dollar-cost per mockup, this is your best bet. You can practically pay for the mockups on this website with the loose change in your couch cushions.
Most of the mockups you’ll find on these websites are PSD filetypes, which are compatible with the Batch-Replace Smart Objects plugin for Photoshop. This plugin allows you to generate all your mockups in bulk, saving you tons of time by automating the boring parts of your workflow.
If you’re not a Photoshop user, the most popular online option is PlaceIt.net. They have a massive collection of mockup templates, and you can generate your mockups directly via their website. It does require a paid monthly subscription, however.