What is a way to determine if a PDF document is a scanned image or if it includes text?

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One way to determine if a PDF document is a scanned image or if it includes text is to try selecting the text with your mouse cursor. If you can highlight and copy the text, then the document includes text. If you cannot select any text, then the document is likely a scanned image or contains non-selectable text. Another way is to zoom in on the document and look for pixelation or clarity of the text. If the text is clear and crisp, it is likely a document with embedded text. If it appears blurry or pixelated, it may be a scanned image.