Apply Sepia

Apply a warm, vintage sepia tone effect to images.

Request Parameters

Response

Returns the image with the sepia effect applied, in the same format as the input file.

Example Request

    curl -X POST "https://oyyi.xyz/api/image/sepia"   -H "accept: application/json" \
  -H "Content-Type: multipart/form-data" \
  -F "file=@image.jpg" \
  --output sepia.jpg
  

Example with Python

    import requests

url = "https://oyyi.xyz/api/image/sepia"

files = {
    'file': open('image.jpg', 'rb')
}

data = {}

response = requests.post(url, files=files, data=data)

# Save the processed image
with open('sepia.jpg', 'wb') as f:
    f.write(response.content)
  

Example with JavaScript

    // Using fetch API
const formData = new FormData();
formData.append('file', fileInput.files[0]);

fetch('https://oyyi.xyz/api/image/sepia', {
  method: 'POST',
  body: formData
})
.then(response => response.blob())
.then(blob => {
  // Create a URL for the blob
  const url = URL.createObjectURL(blob);

  // Create a link to download the image
  const a = document.createElement('a');
  a.href = url;
  a.download = 'sepia.jpg';
  a.click();

  // Clean up by revoking the URL
  URL.revokeObjectURL(url);
})
.catch(error => console.error('Error:', error));
  

Intensity Settings

How It Works

The sepia effect is created by applying a specific color transformation to each pixel in the image. The transformation matrix used is:

[ 0.393 + 0.607 * (1 - intensity), 0.769 - 0.769 * intensity, 0.189 - 0.189 * intensity ]
[ 0.349 - 0.349 * intensity, 0.686 + 0.314 * (1 - intensity), 0.168 - 0.168 * intensity ]
[ 0.272 - 0.272 * intensity, 0.534 - 0.534 * intensity, 0.131 + 0.869 * (1 - intensity) ]

This transformation enhances the red and yellow tones while reducing the blue tones, creating the characteristic warm, brownish appearance of old photographs.

Error Responses

Notes

• The sepia effect works best on color images. Applying it to grayscale images will still work but may produce less dramatic results.
• Setting the intensity to 0 will result in no effect (original image), while setting it to 2.0 will produce a very strong effect.
• The maximum file size allowed is 10MB.
• This operation preserves the alpha channel (transparency) if present in the original image.
• The sepia effect is commonly used to create a nostalgic or vintage appearance.

Use Cases

• Creating vintage or retro-style photographs
• Adding warmth to portraits or landscape images
• Creating a consistent aesthetic for a collection of images
• Simulating the look of old photographs for historical or nostalgic projects
• Creating artistic effects for social media posts
• Enhancing the mood of images for storytelling purposes