Grayscale Image
Convert images to grayscale online for free. Turn color photos into black and white at full resolution, one image or many at once.
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How to Convert an Image to Grayscale
Want to make an image grayscale? ToolifyPDF is a free online grayscale image converter that turns your color photos into black and white in seconds. Every color is replaced by its matching shade of gray, and your image keeps its full resolution and its original format: JPG, PNG, WebP, or TIFF. Convert one image or up to 50 at once and download them in a ZIP file. No software to install and no account needed.
True Grayscale in One Click
Each color is converted to the matching shade of gray, from pure black to pure white, for a clean black and white result at full resolution.
Same Format, Batch Conversion
JPG, PNG, WebP, and TIFF images keep their format, and transparent PNG and WebP backgrounds stay transparent. Convert up to 50 images at once and rotate any that are sideways.
How to Convert an Image to Grayscale
- Select Files: Click "Select Files" or drag and drop your color images into the box.
- Rotate: Turn any image that is sideways or upside down.
- Convert: Click "Convert" to change your images to grayscale.
- Download: Click "Download" to save your grayscale image. Several images are downloaded together in a ZIP file.
Convert Images to Grayscale on Windows, Mac, iPhone, and Android
ToolifyPDF works in any modern browser. You can convert images to grayscale on Windows, Mac, Linux, iPhone, iPad, or Android without installing software. It works in Chrome, Safari, Firefox, and Edge.
Why Convert Images to Grayscale with ToolifyPDF?
Unlike photo editors that you have to install and learn, ToolifyPDF converts images to grayscale online in one click, from any device. Our free grayscale converter is perfect for:
- Giving portraits and photos a classic black and white look
- Preparing images for black and white printing to save color ink
- Making documents, scans, and diagrams easier to read and copy
- Creating a consistent black and white style for websites and presentations
- Converting a whole batch of photos to grayscale at once
FAQ
How do I convert an image to grayscale?
Upload your images, rotate any that need it, and click "Convert". Then click "Download" to save your black and white images.
Is this grayscale image converter free?
Yes. ToolifyPDF is completely free with no sign-up and no watermark. You can convert up to 50 images at once, up to 50MB each.
What is a grayscale image?
A grayscale image contains no color, only shades of gray from black to white. Each pixel stores just its brightness, so the picture keeps all its light, shadows, and detail without any color.
Is grayscale the same as black and white?
In everyday use, yes: a "black and white" photo is usually a grayscale image with many shades of gray. Strictly speaking, a pure black and white image uses only two colors, black and white, with no grays in between. This tool creates true grayscale with the full range of grays.
Which image formats are supported?
You can convert JPG, PNG, WebP, TIFF, and BMP images. Your image is saved in the same format as the original, except BMP, which is saved as PNG.
Will my image lose quality?
No. Your image keeps its full resolution. PNG and TIFF are saved without lossy compression, and JPG and WebP are saved with a high quality setting.
Do transparent images stay transparent?
Yes. Transparent areas of PNG and WebP images stay transparent; only the visible colors are turned into gray. JPG has no transparency, so JPG images keep a solid background.
Can I convert multiple images to grayscale at once?
Yes. You can convert up to 50 images at once. A single image is downloaded on its own, and several images are downloaded together in a ZIP file.
Can I get the colors back after converting?
No. Converting to grayscale removes the color information from the new file, so keep your original image if you might need the color version later.
Can I convert a PDF to grayscale?
Yes, with our Grayscale PDF tool. It turns every page of a PDF into black and white, which is useful for printing without color ink.
Advanced Features
Beyond basic conversion, our grayscale image converter offers several advanced features:
- True Grayscale: Colors are converted to the full range of gray shades, not just black and white.
- Same Format: JPG, PNG, WebP, and TIFF images keep their original format.
- Transparency Kept: Transparent backgrounds in PNG and WebP images stay transparent.
- Full Resolution: Images keep their original width and height.
- Rotate Before Converting: Fix the orientation of any image before you convert it.
- Batch Conversion: Convert up to 50 images at once and download them in a ZIP file.
💡 Pro Tip
For the best black and white photos, start with an image that has good contrast between light and dark areas. Colors that look very different but have the same brightness, like red and green, can end up as almost the same gray.
Privacy & Security
We take your privacy seriously. All file uploads and processing happen over encrypted HTTPS connections. Your files are automatically deleted from our servers after one hour, and we never store or share your documents with third parties. You maintain complete control over your data at all times.
Ready to convert your images to grayscale?
Start converting images to black and white now. It's free, fast, and no sign-up is required.