แปลงเป็นขาวดำ

Upload your PDF and click Convert. Every color element, from text to images, is transformed to shades of gray.

To save ink when printing, reduce file size for image-heavy documents, or meet submission requirements that specify black-and-white.

No. The original color information is removed. Keep a copy of your color version if you might need it later.

Text remains fully readable. The conversion maps colors to appropriate gray tones that maintain contrast.