Why Tools Ku
- Free, no signup
- Browser-local, not uploaded
- No install
- Desktop & mobile
Greyscale: Convert image to greyscale using Canvas. Images processed locally via Canvas—never uploaded.
No install needed.
Steps
- Upload image(s)
- Set options
- Process
- Download
FAQ
- Signup required for Greyscale?
- No. Free with no account.
- Uploaded?
- No.
- HEIC?
- Use HEIC→JPG if browser cannot decode.
- Batch limits?
- Memory-bound; keep batches reasonable.
- Mobile browsers?
- Yes; heavy tasks better on desktop Wi-Fi.
- Copy or download?
- Yes—copy text or download files as supported.