Image Grayscale
Need to turn photos black & white? Image Grayscale does it in the browser, in a couple of clicks. The image is decoded onto an HTML canvas in your browser and re-encoded there, so the picture is processed on your own device rather than uploaded. It is used most by developers preparing assets for an app or website build. EXIF orientation is respected, so photos from a phone do not come out rotated. It stays free with unlimited use, and there is no watermark on anything it produces.
Key features
- EXIF orientation is respected, so photos from a phone do not come out rotated.
- Transparency in PNG and WebP is preserved; converting to JPG flattens it onto a solid background.
- Works on desktop, tablet and phone — no separate app to install.
- Built to do one job properly rather than twenty jobs badly.
How to use Image Grayscale
- Choose an image: Drop a picture onto the area above, or tap to pick one from your device or camera roll.
- Adjust the settings: Set the size, quality or format you need. The preview shows what you will get.
- Save it: Download the finished image — the original on your device is left untouched.
Frequently asked questions
- Which image formats does Image Grayscale accept? — JPG, PNG, WebP, GIF, BMP and — in current browsers — AVIF. HEIC from an iPhone usually needs converting first.
- Are my photos uploaded when I use Image Grayscale? — No. Image Grayscale works on a canvas inside your browser. The picture stays on your device and no copy is kept by us.
- Does Image Grayscale strip location data from my photos? — Re-encoding drops most EXIF metadata, including GPS coordinates — useful if you are about to post the picture publicly.
- Will transparency survive? — Yes for PNG and WebP output. Saving as JPG has no transparency channel, so transparent areas become solid.