Grayscale image
Convert an image to grayscale and download a PNG.
Drop your files here
Make something new. Keep everything private.
Multiple files welcome · processed one at a time
Select a tool to see its supported formats and conversion limits. Large files may exceed your browser’s memory.
Before processing large files
On phones and tablets, start with files under 20 MiB and keep this tab in the foreground. Video, OCR and 3D operations can use several times the input size in memory. Desktop browsers generally have more room, but the 128 MiB job limit is not a guarantee that every file will fit. Smaller batches reduce memory pressure.
Supported input formats
- Portable Network Graphics (.png)
- JPEG image (.jpg)
- WebP image (.webp)
- Graphics Interchange Format (.gif)
- Tagged Image File Format (.tiff)
- Bitmap image (.bmp)
- AV1 Image File Format (.avif)
- JPEG XL image (.jxl)
- JPEG 2000 image (.jp2)
- Quite OK Image Format (.qoi)
- Adobe Photoshop document (.psd)
- OpenEXR image (.exr)
- Radiance high dynamic range image (.hdr)
- Portable Pixmap image (.ppm)
- JPEG image (.jpeg)
- Tagged Image File Format (.tif)
Output format
Portable Network Graphics (.png)
Support applies to this conversion direction. Check the limits below for features that may change or be discarded.
Compare all supported formats and conversion limits →How to use Grayscale image
- Add your supported file using the chooser or drop zone.
- Review the settings and conversion limits before processing.
- Select Convert files, then download the result.
What to expect
- Only the first frame is processed. Output is PNG; editable layers are not preserved.
- Maximum 40 megapixels per frame, including after resizing and rotation. Metadata and color profiles may change.
Engine: imagemagick. The engine may need a first-use download. Your file stays in this browser session.Check conversion engines and offline requirements.
About this conversion
Is grayscale image free?
Yes. This tool runs on your device without an account or a conversion fee.
Are files uploaded during conversion?
File processing happens locally in your browser. Engines may download their code on first use; your input files are not sent to a conversion server. Read how file privacy works.
What if conversion fails?
Check that the file matches a supported input, review the engine’s limitations and try a smaller representative file. If the engine cannot load, check its engine assets and browser requirements. The app reports failures without switching to a remote converter.
Continue with your output
These tools accept this tool’s output format. Each step has its own settings and fidelity limits.
- Resize image
Resize an image to fit within a width and height, preserving aspect ratio; download a PNG.
- Crop image
Crop an image to a rectangle specified in pixels and download a PNG.
- Rotate image
Rotate an image clockwise by an angle in degrees and download a PNG.
- Flip or mirror image
Mirror an image horizontally or flip it vertically, then download a PNG.
- Remove image metadata
Remove metadata and color profiles from an image and download a PNG.
- Compress image to JPEG
Create a JPEG with adjustable lossy quality. The output may be larger than the original.
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- Image to GIF
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- Image to TIFF
Convert raster images to TIFF; resize, crop and rotate locally.
- Image to BMP
Convert raster images to BMP; resize, crop and rotate locally.