Are my edits permanent?

No — your original file is never modified. Download the edited image to save your changes.

What formats can I export edited images?

JPEG (best for photos), PNG (lossless, supports transparency), or WebP (smallest file size with excellent quality).

Does the editor work on mobile?

Yes — all editor tools use the Canvas API which works in mobile browsers. Touch events are supported for cropping and drawing tools.

Is there a file size limit?

Up to 20MB per image. Larger files may be slow on low-powered devices since all processing is done locally.

Editor

Image to Grayscale

Convert colour images to black and white online free. Uses ITU-R luma coefficients for accurate greyscale. Instant download....

✓ Free⚡ Instant🔒 Private

No. All editing happens in your browser using the Canvas API. Your files never leave your device.

Upload a fresh copy of your image and reapply the edits. All processing is non-destructive on your original file.

Drop image here

or click to browse · Paste with Ctrl+V

JPGPNGWebPHEICGIFBMP

Max 20 MB · Processed locally · Zero uploads

Settings

Output Format

Processing…

Change

smaller

Extracted Text

PreviewTap images to zoom

ORIGINAL

Original

RESULT

Result appears here

How to Use

Upload your colour image.

Click Convert to Grayscale — instant processing.

Download the black and white version.

Quick Answer

Image to Grayscale: free, browser-based tool — Convert colour images to black and white online free. Uses ITU-R luma coefficients for accurate greyscale. Instant download.... No upload required, works instantly on any device.

Frequently Asked Questions

The ITU-R BT.601 luma formula: 21.26% red, 71.52% green, 7.22% blue — the same formula used in professional video and photography.