I have to pay a heavy server cost to run heavy OCR, inpainting task and translation cost each time you translate 1 page, there's nothing free to run this service, and I offer a free amount of credits for you to test, you can even sign up multiple accounts to have more credits to test, you want a service that works well and free?
About the DeepL explain, I even include a video about how to use it in the how-to-use page, please find it thoroughly before writing anything