PDF压缩提示文件损坏加密无法处理

How to Solve the "File Corrupted or Encrypted and Cannot Be Processed" Prompt During PDF Compression

Handle PDF compression errors in the order of "determine the cause—troubleshoot step by step—select parameters," and master the key points of post-compression size increase, online vs. desktop differences, mobile installation-free use, beginner settings, and scanned file processing to reduce ineffective retries.