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SPCXTools

Black and White Image Converter

Turn any photo black and white, sepia or negative — and adjust brightness and contrast — in your browser.

Runs locally — files never leave your device

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How to use Black and White Image Converter

  1. 1Choose an image or drop it onto the page. It is converted to black and white straight away.
  2. 2Pick an effect — Black & white, Sepia, Invert or Original colors.
  3. 3Adjust brightness and contrast (and saturation for color photos). Press and hold the image to compare with the original.
  4. 4Download the result at full resolution.

Black and white in one click

Black and white photography never goes out of style. Removing color draws attention to light, shape, texture and expression, hides distracting backgrounds and gives portraits and street photos a timeless feel. It's also practical: grayscale images print cleanly on office printers, and inverted screenshots save ink. This converter turns any photo into black and white, sepia or a negative and lets you fine-tune brightness and contrast with a live preview.

Features

  • Black & white using perceptual luminance weights.
  • Sepia for a warm, vintage look.
  • Invert for negatives and printer-friendly screenshots.
  • Brightness, contrast and saturation sliders.
  • Press-and-hold comparison with the original.
  • Full-resolution download, PNG or JPG.
  • Private: nothing is uploaded.

Suggested settings

Look Effect Brightness Contrast
Soft portrait Black & white +5 −10
Dramatic street photo Black & white −5 +35
Old photograph Sepia 0 −15
Faded film Original colors, saturation −40 +10 −20
Printable dark screenshot Invert 0 +10

Related tools

Hide faces or text with Blur Image, add a caption with Add Text to Image, trim the frame with Crop Image, or make the file smaller with Compress Image.

Frequently asked questions

How is the black and white version calculated?
Each pixel's brightness is computed with the standard Rec. 709 weights (21% red, 72% green, 7% blue), which match how bright colors look to the human eye. Simply averaging the three channels makes greens and blues look wrong.
How do I make a black and white photo look more dramatic?
Increase the contrast by 20–40 and slightly lower the brightness. Strong contrast deepens shadows and brightens highlights, giving a classic film look.
What does Invert do?
It replaces every color with its opposite — black becomes white, blue becomes yellow — like a photographic negative. It's also useful for turning dark screenshots into printer-friendly light versions.
Will the image lose quality?
The image keeps its original dimensions (up to 6000 pixels on the longest side). PNG files stay PNG; other formats are saved as high-quality JPG.
Is my photo uploaded?
No. All processing happens in your browser and the image never leaves your device.

Related tools

Blur ImageHide faces, names and private details by blurring or pixelating any part of a picture.Add Text to ImagePut captions, titles or meme text on any picture and drag them exactly where you want.Crop ImageDrag a crop box or enter exact pixels to crop photos to any shape — square, 16:9, 4:5 and more.Compress ImageMake images smaller by quality or to an exact target size in KB — in batches, without uploading.Add Border to ImageEasily add customizable colored borders and rounded corners to your photos.Circle CropEasily crop any image into a perfect circle with custom borders and transparent backgrounds.