How to fool OCR software?

I want to upload images containing text content which should't be extractable by using common OCR tools.

Does anyone have a working method that keeps spiders from indexing the contents?

In general OCR looks for similarities in the figure open areas, shapes of the different texts, and letters in the file being scanned for conversion.

Tesseract ist a popular ocr package and it struggles a lot with characters that are "connected".

You could also try using a watermark. This also confuses OCR Software.

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Btw are you from Germany?