箱宝Toolbox
🔒 Local Processing
🩶

Image grayscale/black and white

One click to grayscale or pure black and white

Related Tools

🪪
ID Photo Maker
Select size → upload → crop/rotate/resize → export PNG/JPG, supports solid-color background replacement, fully local processing.
🗜️
Image compression
Local compression JPEG/PNG, adjustable quality
🖼️
Image Format Conversion
PNG/JPEG/WebP conversion
📦
File Base64
File to Base64, or decode to file download
🟦
Favicon Generator
Generate favicon with text/emoji
🟧
Placeholder Map Generation
Generate SVG placemap with customizable size/text/color