How to use
- 1
Add one or more photos.
- 2
Pick an effect; threshold has a level slider. The first photo previews.
- 3
Click "Convert" and download.
When to use it
No filter in Paint
Upload and choose grayscale.
Clean up a stamp or signature
Threshold removes background stains.
Many photos, same look
Batch convert to a ZIP.
Good to know
- Use pure black/white for stamps and signatures.
- Preview charts before printing in grayscale.
- The original format is kept.
FAQ
Can I undo?
Not from the saved file; keep the original.
Batch?
Yes, with a ZIP download.
Uploaded?
No.