AWS Textract is free up to 1,000 pages per month. You'll need an AWS account, which is also free and useful for a lot of other things for free as well.
Here's a sample of what doing an OCR looks like:
It was created by taking a photo then uploading the image.
The download function creates a .zip flie with these files in it:
- apiResponse.json
- keyValues.csv
- rawText.txt