How it works
How to use Grayscale Image online
- Choose the file or files requested by the tool.
- Adjust any available settings for the output you want.
- Run the tool in your browser and download the finished result.
Image tool
Grayscale Image
Convert an image to black and white grayscale.
Add your input
Your file stays in this browser.
Good to know1 file · 50 MB max
Upload a JPG, PNG, WebP, GIF, or BMP fileResult: PNG files
- Your image stays in this browser while the tool runs.
- Animated images may be saved as a single still frame.
Overview
Grayscale Image for private browser work
Convert an image to black and white grayscale. This page keeps the input, output, browser requirements, and practical limits visible before you run the tool, so you can choose the right workflow for the file.
Input
Upload a JPG, PNG, WebP, GIF, or BMP file
Output
PNG files
Limits
1 file · 50 MB max
Best for
Grayscale Image use cases
- Turn upload a jpg, png, webp, gif, or bmp file into png files without creating an account.
- Run a quick grayscale image job before sharing, archiving, or publishing a file.
- Check the 1 file · 50 mb max guidance before using larger or unusual inputs.
Processing
What happens in your browser
PrivConvert uses createImageBitmap, OffscreenCanvas, and Canvas 2D for this workflow. 3 adjustable settings. This tool checks for offscreen canvas support before running
Your image stays in this browser while the tool runs.
Related tools
Keep working with this file
FAQ
Grayscale Image questions
Is Grayscale Image free to use?
Yes. This tool is free to use in your browser and does not require an account.
Are my files private?
PrivConvert is designed for local-first processing. Files are handled in your browser when supported and are not uploaded for account-based storage.
Why might a file fail to process?
Your image stays in this browser while the tool runs.