Black & White Filter
Turn any colour photo into clean black-and-white using a luminance-correct conversion (each channel weighted by how the eye perceives it).
Drop a photo to start
JPG, PNG, WebP, HEIC up to 40 MB · stays in your browser
Never uploaded · 100% browser-side
How it works
- 1
Drop your photo
Drag & drop or browse to upload. JPG, PNG, WebP, HEIC up to 40 MB.
- 2
Apply the B&W filter
We map every pixel to its perceptual luminance (0.299 R + 0.587 G + 0.114 B) and bump contrast slightly so the result has clean tonal range.
- 3
Download or open in editor
Save the filtered result, or open it in our AI editor for more changes - background removal, upscaling, additional adjustments.
Why use this online tool
Luminance-correct grayscale
Uses the perceptual weights (R / G / B = 0.299 / 0.587 / 0.114) so brightness matches how your eye sees the original colour photo - skin tones don't go too dark, skies stay light.
Adjustable intensity
Single slider tunes how strong the effect is. Drop to 0% for the original, push to 100% for full preset strength - find the sweet spot live.
100% browser-side
The filter runs on a Canvas in your browser. Your photo never leaves your device - no upload, no server, no privacy risk.
Free, no watermark
Unlimited filter applications, no signup, no overlay on the output.
When to use it
- Portraits where colour distracts from expression and form
- Architectural photos where shapes, light, and texture are the subject
- Documentary / journalism shots with an editorial aesthetic
- Brand visuals that need to feel timeless and high-contrast
- Print-friendly versions of colour photos for newsletters and magazines
Frequently asked questions
- Does this upload my photo to a server?
- No. The filter runs entirely in your browser using direct ImageData pixel manipulation. Your image never leaves your device.
- Why use luminance weights instead of just averaging?
- Plain (R+G+B)/3 desaturation makes blue skies look too dark and skin tones too light. The luminance formula matches how human eyes perceive brightness across colours - the resulting B&W feels natural rather than 'wrong'.
- What's the difference between B&W and noir?
- Our standard B&W is a clean, faithful grayscale conversion - sometimes used for archival or print purposes. Our noir filter is a stylised version: high contrast, crushed deep shadows, dramatic mood. Pick B&W for accuracy, noir for cinema.
- Can I tone the B&W after (sepia / blue / split-tone)?
- In this widget, no - one preset at a time. Open the B&W result in our editor for tinting, split-toning, or adjustment-layer style work.
- Can I undo the filter?
- Yes - the filter is applied to a copy of your photo. Drop the intensity slider to 0% to see the original, switch presets, or just don't download and the source is unchanged.
Related free tools
Noir Filter
Transform any photo into a moody high-contrast film-noir black-and-white. Deep crushed shadows, punchy highlights, dramatic atmosphere.
Sepia Filter
Give any photo the warm-brown antique look of an old sepia print. One slider tunes the strength. Browser-side, no upload.
Vintage Filter
Give any photo a warm, faded retro look in one click. Tune the intensity to taste. 100% browser-side, no upload.
Frame to Photo
Pick a frame style and apply it instantly. Polaroid, film strip, neon glow, gradient borders, and more. Browser-side, no upload.
Need more than just black & white filter?
Our AI editor goes way beyond simple transforms - background removal, style transfer, upscaling, photo-to-anime, and 50+ more AI tools. First 5 edits are on us.
Open AI editor - 5 free credits