使用 灰度 / 黑白 之前的常见问题。
It creates a new grayscale file - your original color image is never modified.
Yes, upload as many images as you like and they're all converted to grayscale together.
No, Drefly saves the output at the highest available quality setting.
Yes, it's completely free with no signup and no watermark on the result.
JPG, PNG, WEBP, BMP, GIF, TIFF, HEIC, and AVIF are all supported.
Drefly