Is the Image Grayscale free to use?

Yes. The Image Grayscale is free and works without creating an account.

Are my files uploaded to a server?

No. The Image Grayscale runs entirely inside your web browser using built-in browser technology, so your files never leave your device.

Is there a file size limit?

Files up to 50 MB are supported. Very large images (over 64 megapixels) are rejected to keep your browser responsive.

Which file formats are supported?

Input: JPG, PNG, WEBP, AVIF, BMP. Output: JPG, PNG, WEBP. File types are verified from the file contents, not just the extension.

Does it work on phones and tablets?

Yes. It works in modern mobile browsers on Android and iOS as well as on desktop.

Convert Images to Black and White

Convert a color photo to grayscale using perceptual luminance weights, with optional partial strength.

Input:: JPG, PNG, WEBP, AVIF, BMP
Output:: JPG, PNG, WEBP
Max size:: 50 MB
Runs:: In your browser (no upload)

What the Image Grayscale does

Turn color photos into grayscale, or reduce color partially for a muted look by setting a strength below 100%.

Options

Strength from 0% (original color) to 100% (full grayscale).

How to use the Image Grayscale

1
Drag your JPG, PNG, WEBP, AVIF, BMP file into the upload area, or click it to browse your device.
2
Adjust the options to suit your needs — the defaults work well for most files.
3
Click “Run Image Grayscale” to start processing.
4
Preview the result, then download it. Batch results can be downloaded together as a ZIP.

Supported formats

JPG (JPEG) is a lossy format ideal for photographs. It has no transparency and is supported everywhere. More about the JPEG / JPG format.
PNG is a lossless format that supports full transparency. Best for screenshots, logos and graphics with sharp edges. More about the PNG format.
WebP is a modern format from Google supporting lossy and lossless compression plus transparency, typically 25–35% smaller than JPG. More about the WebP format.
AVIF is a next-generation format based on the AV1 codec, offering excellent compression and HDR support. More about the AVIF format.
BMP is an uncompressed Windows bitmap format. Files are large and rarely needed on the web.

Frequently asked questions

Image Resizer

Resize images to exact pixel dimensions or a percentage, with optional aspect-ratio locking.

Image Cropper

Crop an image to an exact region or to a centered aspect ratio such as 1:1, 16:9 or 4:5.

Image Compressor

Reduce image file size with adjustable quality and optional maximum dimensions, and see the savings.

Image Converter

Convert any common image format to JPG, PNG or WebP in a single step.

Image Rotator

Rotate an image by 90, 180 or 270 degrees, or by any custom angle with a chosen background.

Image Flipper

Mirror an image horizontally, vertically or both.