Method 2: Find an online PDF conversion tool. There are many websites that can compress PDF files. You just need to upload the file, compress it, and then download it again. The compressed file size generally does not exceed 5- 10MB, but there are exceptions. Common online PDF conversion tools are:
Small PDF- This website can quickly compress PDF files and provide downloads, and there is no limit on file size and conversion time.
Neevia's PDF compression-This website can only convert files under 5MB, but there are more compression options than SmallPDF. ;
Method 3: Use the "PDF with reduced size" function:
1, open Adobe Acrobat. Open the PDF file you want to compress, but the free version does not have this function;
2. Use the "Save As" function. Open the file menu, hover over Save As, a submenu will be expanded, and then select Simplified PDF. You can also select the "Reduced PDF" function from the Document menu.
3. Choose compatibility. If you choose a newer version, the file will be smaller, but it may not open on the old version of Acrobat.
4. Save multiple files. If you want to make the same settings for multiple files, click Apply to Multiple Documents, so you can add multiple documents. In the Output Options dialog box, optimize the settings of folders and file names.
Method 4: Use the PDF optimizer:
1. Open the PDF file to be reduced in size.
2. Open the PDF optimizer.
3. Statistical PDF size.
4. Adjust the settings.
5. Press "OK".
Method 5: Use other methods for treatment.