The specific operation steps are as follows:

1. First enter official website, our PDF converter.

2. After downloading and installing, open the software and choose what to do if the digital signature disappears when merging pdf.

3. Click or drag the batch PDF file to be converted, or click Add Folder at the bottom of the interface; You can choose the original file directory or custom directory as the output directory, and finally click "Start Conversion" to complete the conversion.

Acrobat generally refers to Adobe Acrobat. Adobe Acrobat is a PDF (Portable Document Format) editing software developed by Adobe Company. With it, you can make and save documents in PDF format for easy browsing and printing, or use more advanced functions.