djvu => little archive size output from scan
if the chess book has figurine notation, converting to text would output a mess
convert djvu to pdf is trivial (google djvu to pdf)
Why the most chess books are in a djvu format
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Como?
Hey, the answer is simply that DjVu is a really good format for scanned documents an superior in terms of compression technology. More information including the whole story of the DjVu Format you find here:
https://www.djvu-pdf.com/en/djvu-format/
please suggest if we can convert them in PDF or text formats. Please do write if you know.
Love..