1. If you want to reduce the PDF file, you can use the PDF conversion tool to complete the operation. To compress files, you first need to install a PDF converter on the running computer. You don't need to teach everyone about the specific download, just enter Baidu browser.

2. Open the PDF conversion tool and enter the operation page. You can select "PDF Operation", open this column and click the "PDF Compression" function.

3. Then move the mouse to "Add File" and click to find the PDF file to be compressed in the folder. Of course, you can also add PDF files in batches for compression.

4. After successfully adding the PDF file, you can select the "Custom" option in the output directory and set the file path in the browse box.

5. You can set the compression level and definition below according to your own operation requirements. Click the "Start Conversion" button below to compress the PDF file.