Why CuiMao Helper?
100%
100% Private
All processing happens in your browser. Your files never leave your device.
$0
Completely Free
No limits, no watermarks, no sign-ups. Every tool is free, forever.
<1s
Lightning Fast
No uploads or downloads from servers. Processing starts instantly.
40+
40+ Tools
From merging to OCR, we have every PDF tool you'll ever need.
100%
100% Private
All processing happens in your browser. Your files never leave your device.
$0
Completely Free
No limits, no watermarks, no sign-ups. Every tool is free, forever.
<1s
Lightning Fast
No uploads or downloads from servers. Processing starts instantly.
40+
40+ Tools
From merging to OCR, we have every PDF tool you'll ever need.
Choose from 40+ tools organized in 4 categories
Upload Your File
Drag & drop or browse to select your PDF files
Choose Options
Configure settings for your specific task
Process & Download
Get your result instantly — everything runs in your browser