点击或拖拽图片到这里
支持 JPG, PNG, WebP 格式，文件大小不超过 20MB
What this tool does
Add a bottom-right text watermark (white bold with shadow). Opacity 0–100%; font size scales with image width. Preview updates live.
How to use
- Upload an image.
- Enter watermark text and opacity.
- Download watermarked.png.
FAQ
Can I change position or color?
Fixed bottom-right white text for now — no tiled or logo watermarks yet.
Does CJK text render OK?
Yes — system sans-serif handles Chinese and English.
More tools in thedeveloper toolbox. For store preview shots, try theApp Store screenshot maker.