PDF sang Xám
Chuyển đổi PDF màu sang đen trắng
Drop your color PDF file here
or click to browse
Xử Lý Trên Trình Duyệt
Tệp được xử lý cục bộ trong trình duyệt của bạn
Tự Động Xóa
Tệp tự động bị xóa sau khi xử lý
Không Cần Đăng Ký
Sử dụng tất cả công cụ mà không cần tạo tài khoản
Hoạt Động Mọi Nơi
Mọi thiết bị, mọi trình duyệt, không cần cài đặt
Cách Chuyển Đổi PDF Sang Xám
- 1
Tải Lên PDF
Chọn hoặc kéo tệp PDF của bạn vào khu vực tải lên.
- 2
Chuyển Đổi
Nhấp chuyển đổi để biến màu sắc thành xám.
- 3
Tải Xuống
Tải xuống tệp PDF đen trắng của bạn.
Benefits of Grayscale PDFs
Cost Savings
Black and white printing costs significantly less than color printing, especially for large documents.
Smaller Files
Grayscale images contain less data than color images, resulting in smaller PDF file sizes.
Fax Compatible
Grayscale documents are ideal for faxing and work better with legacy office equipment.
Consistent Output
Grayscale documents look consistent across different printers without color calibration issues.
Why Convert to Grayscale?
Color printing is expensive. Converting PDFs to grayscale before printing can save significant costs while maintaining document readability and professional appearance.
Benefits of Grayscale
- Cost Savings: Black & white printing costs 5-10x less than color.
- Smaller Files: Grayscale images require less data than color.
- Clarity: Some documents are easier to read in grayscale.
- Professional Look: Grayscale provides a clean, formal appearance.
Considerations
Charts and graphs using color to distinguish data may need labels or patterns after conversion. Always preview the grayscale result to ensure important distinctions remain visible.
Câu Hỏi Thường Gặp
Why convert a PDF to grayscale?
Grayscale reduces printing costs (B&W printing is cheaper), decreases file size, and can improve readability for some documents.
Will text still be readable?
Yes, text remains fully readable. Conversion only affects colors, not clarity or sharpness of text and graphics.
Can I convert back to color?
No, grayscale conversion is permanent. Color information is removed. Always keep your original color PDF.
Is converting PDF to grayscale free?
Yes, completely free with no registration, watermarks, or hidden costs.
Will the file size decrease?
Often yes, especially for PDFs with color images. Grayscale requires less data than full color.
Is grayscale the same as black and white?
Grayscale uses shades of gray (0-255 levels). True black and white uses only pure black and pure white with no grays.
Will colored charts still be distinguishable?
Different colors convert to different shades of gray. Very similar colors may become hard to distinguish - consider adding patterns or labels.
Can I convert specific pages only?
Currently all pages are converted. For selective conversion, split the PDF first, convert needed pages, then merge them back.
How does this affect images?
All color images become grayscale. Photos lose their color but maintain detail and sharpness.
Is this better than printer grayscale mode?
Converting before printing gives you control over how colors map to grays and creates a smaller file for faster printing.