About Image Threshold
Image Threshold is a free, fast and reliable online tool. Convert image to black and white. Everything runs locally in your browser — no files are uploaded and no data is stored, keeping your information completely private. It works responsively on both desktop and mobile devices.
How to use Image Threshold
- 1 Click "Choose an image" and upload your file
- 2 Adjust Threshold (0-255) as needed
- 3 Click "Convert" to process the image
- 4 Click "Download" to save the result
Frequently asked questions
How do I use Image Threshold?
Adjust Threshold (0-255) and the result is generated instantly in your browser.
Is Image Threshold free to use?
Yes — Image Threshold is a free online tool. No sign-up or login is required, and there are no hidden charges or usage limits.
Do I need to create an account to use Image Threshold?
No. Image Threshold runs entirely online in your browser — there is no account to create, no login, and nothing to install.
Does Image Threshold upload my data?
No. Everything runs locally in your browser. Your input never leaves your device, is never stored, and is never tracked, so it stays private.
Free, online, and private
Free to use
Image Threshold is completely free. There is no account to create, no login, and no hidden charge or usage limit.
Runs online in your browser
It is a free online tool that runs entirely in your browser. Nothing to download or install — open the page and start using it right away.
Your data stays private
All processing happens locally on your device. Your input is never uploaded, stored, or tracked, so it never leaves your browser.