upload_file
将PDF文件拖放到此处
或点击选择
常见问题
What color changes can I make to a PDF?expand_more
You can adjust brightness, contrast, saturation, and hue. You can also replace specific colors or apply color tinting across the document.
Does this work on scanned documents?expand_more
Yes. Color adjustments apply to both vector content and rasterized scanned images.
Can I preview changes before applying?expand_more
Yes. The live preview shows how your adjustments will look on each page before you save.
Will changing colors increase the file size?expand_more
File size may change slightly depending on the adjustments, but the difference is usually minimal.