The Anton and Oswald Google fonts are Free alternatives to Impact which can be made to look nearly identical (more spacing for Anton, bolder weight for Oswald).
That’s one of your issues solved.
The other one could be solved by making users upload memes to their browsers in local storage. They could then export their meme repositories as ZIP files and share them with others.
You’d “just” need to host the editor webpage and have it do everything locally, ideally as PWA.
The Anton and Oswald Google fonts are Free alternatives to Impact which can be made to look nearly identical (more spacing for Anton, bolder weight for Oswald).
That’s one of your issues solved.
The other one could be solved by making users upload memes to their browsers in local storage. They could then export their meme repositories as ZIP files and share them with others.
You’d “just” need to host the editor webpage and have it do everything locally, ideally as PWA.