I got fed up with shitty file-to-text APIs that either break at the first sign of trouble (like longer files), or want $50/mo for a partial solution. So I teamed up with a coder and built my own in 2 days. Now working to wrap this into a product. If you're like me and need a simple service (API or not) to turn files into plain text (e.g. for AI processing in my case), ping me and I'll be happy to give you preview access.