Screenshot Composer

I had a use case for generating social-ready screenshots, but most tools required me to log in, create an account, or pay. I wanted something with no strings attached. Screenshot Composer is a single-page app (literally one page): Upload your images Choose from the available backgrounds Tweak the border, padding, shadow, and corner text Export as a ZIP or as individual PNGs The entire app runs client-side. There’s no shared state, and everything happens in your browser. When you’re done, just refresh the page and you’re ready to generate the next batch.