How can I alter color scanned papers or images into monochromatic PDFs?

A-PDF Scan Paper (free download here) is a product help to scan paper files into PDF format, or convert images to PDF documents, then manage all of the PDF files, you can search, move, define properties, send email as attachments.

Now let's have a look at the simple procedure of converting color images into monochrome PDF files:

1. Choose a folder in default path for saving converted PDF files, and you can change path by clicking "File->Options->Root path";
2. Click the icon of "Scan" to enter into the interface of converting files into PDF format;
3. Click the icon "Add image" to put images to the list, if you want to scan paper to PDF format, you can click "Scan Paper" to select scanner and create PDF files based on scanned documents simultaneously;
4. Choose "Small File Size (Monochrome)" to convert files into monochrome type, you can also define other features by clicking "Settings";
5. After you set for output PDF files, click "Save to PDF" to define name and metadata for outputting, then you will see monochrome PDF saved in specified folder, you can set security, viewer or send email with formed PDF file, etc.

In Step 4, you can optimize images by flipping, rotating, cropping or de-skewing images:

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Or view video tutorial here: