To export the PDF files, please follow the below ways:

1. Open CS app--select the files--Share--Share PDF--Save to local.

Above CS v.6.5.0, the PDF file will be saved in [Download/CamScanner] folder;

For CS v.6.3.0-6.4.x, it will be saved in [Download] folder;

If lower than CS v.6.3.0, it will still be saved in [CamScanner] folder. 

2. Open CS app--open a file--top right "PDF" icon.

For Android 11 (and Android 10 which has operated the data migration), the PDF file will be saved in Android/data/com.intsig.camscanner/files/CamScanner; otherwise, the PDF file will still be saved in [CamScanner] folder. 

3. Open CS app--bottom Me--More Settings--Doc Export--Export PDF files to export all PDF files. 

After CS v.6.4.0, the PDF files will be saved in [Download/CamScanner] folder; otherwise, the PDF will still be saved in [CamScanner] folder. 

By the way, to check the CS version, please open CS app--bottom Me--Feedback--About. 

Moreover, if you have a CamScanner account and synced docs, you can download PDFs fromwww.camscanner.com directly.