Convert images to black and white online
Transform your photos into classic monochrome or high-contrast black and white. Drop a single picture or a whole folder – everything is processed in your browser.
- No upload
- Free, no sign-up
- Whole folders
- Works offline
Drop images or a folder here
JPG, PNG, WebP, AVIF or BMP · no file limit
Processed on your device. Nothing is uploaded.
How to convert photos to black and white
- 1
Add your photos
Drop single images, multiple photos or an entire folder. Subfolders are fully preserved.
- 2
Black & White is pre-selected
The live preview shows the monochrome result straight away. Switch to Film Noir for deeper blacks, or use the Brightness and Contrast sliders next to the filter list.
- 3
Crop if you like
Press Crop above the preview to frame the photo, or choose a shape such as 1:1 to crop every image in the batch.
- 4
Apply and download
Click Apply to create the files, then download individual images, a ZIP that keeps your folders, or save back to the folder in Chrome and Edge.
Why convert photos to black and white in your browser?
Black and white photography removes color distractions and puts the focus on light, texture and emotion. With Asset Compressor you can convert dozens of photos or whole albums to monochrome in one pass, and see the effect in the live preview before you commit.
All processing happens on your device. Your personal photos are never uploaded to a server or stored in the cloud.
Black & White or Film Noir?
The Black & White preset removes all color and keeps the tonal range of the original, which suits portraits, landscapes and documents. Film Noir converts to monochrome and then adds contrast and slightly darkens the picture for a dramatic, high-contrast look.
You can combine either preset with the Brightness, Contrast and Saturation sliders. Filters and sliders sit side by side, so you can change both and watch the preview update. Hold the compare button above the preview to see the photo without the filter.
Convert, crop and compress in one step
The filter is applied together with everything else in the settings: crop shape, maximum width and height, output format, quality or a target file size such as 100 KB. A typical use is turning a folder of color photos into square black and white WebP files of 1200 px, ready for a website.
Re-encoded images do not keep EXIF metadata such as camera model or GPS position.
Frequently asked questions
Does converting to black and white reduce image quality?
The filter itself keeps your resolution. The converted image is encoded again, so with JPEG or WebP the quality slider decides how much detail is kept. Choose PNG for a lossless result.
Can I convert an entire folder of photos to black and white at once?
Yes. Drop the folder and every supported image is converted. The ZIP download keeps your subfolder structure.
Are my photos uploaded to a server?
No. All conversions happen in your browser on your own computer or phone.
How do I get more contrast in my black and white photo?
Choose the Film Noir preset, or raise the Contrast slider. Both are applied in the live preview, so you can see the result before you click Apply.
Related tools
Sepia Filter
Give your images a warm, nostalgic sepia tone. Perfect for family portraits, architecture shots and retro photo albums – one photo or a whole folder.
High Contrast
Bring out detail, deepen shadows and make colors pop across your photos. Everything runs privately on your device.
Crop image
Draw the exact area you want to keep, or crop a whole batch to one shape in a single pass. Your photos are cropped on your own device and never uploaded.
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