Which OCR Engine is Free in Community Edition Version

I have developed a Bot 2month before and in that used a Google OCR, but as in community edition version Google OCR is only provided for 1 month, so not my Bot is stopped functioning. could you please suggest me or help to figure out, which OCR Engine is free for long duration in community edition version for PDF data read and convert in to Excel.
thanks in advance


Tesseract OCR and Microsoft OCR are free. But the same those two Cloud OCR’s needs api key

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