Image I/O
Input
Our API supports several options to provide source images that need to be processed.
HTTP(S) URL
URL of the input image should be from 1 to 512 characters. The image must be accessible by our system.
{
"input": "https://letsenhance.io/docs/assets/samples/burger.jpg"
} Image upload
Our API also supports the ability to upload image content directly. Just make sure that all respective headers are set. See Upload API Reference for more info.
Connected storage
You can connect Cloud Storage and use it as a source for images. Currently, our API supports AWS S3 and Google Cloud Storage.
After connecting your Cloud Storage, you can refer the storage name as an input.
{
"input": "storage://storage-name/path/image-name.jpg"
}Input image file types
Our API supports the following image formats as inputs: BMP, GIF, JPEG, PNG, TIFF, WEBP, AVIF, and HEIC.
Output
Configuration of result output is optional.
By default, you may omit the output option from the request payload. In this case, our system stores the result in a temporary bucket with a lifespan of 24 hours and provides a public URL to the image.
Alternatively, you can use a connected Cloud Storage: just configure the path to the folder where you want to store results.
Output image file types
The following image formats are supported for the output: JPEG, PNG, TIFF, WEBP and AVIF.
Basic and advanced output options
{
"output": "storage://storage-name/result-path/image-name.jpg"
}"output": {
"destination": "storage://storage-name/result-path/image-name.jpg",
"format": "jpeg",
"metadata": {
"dpi": 300,
"color_space": {
"type": "CMYK",
"color_profile": "ISO_Coated"
}
}
}"output": {
"destination": "storage://storage-name/result-path/image-name.jpg",
"format": {
"type": "jpeg",
"quality": 85,
"progressive": true
}
}
See the full list of the advanced format-specific options below:
quality
integer
Specifies the amount of JPEG lossy compression in the range 1 - 100. Defaults to 85.
progressive
boolean
Progressive JPEG loads in a browser in successive waves until a clear picture is formed, thus improving the image loading speed. Used by default.
compression
string
Indicates compression effort that will be applied during the PNG image encoding. Should have one of the values:
fastis used to apply minimum compression resulting in a bigger image size but less processing time.
bestis used to apply maximum compression resulting in a smaller image size but more processing time.
optimalis the default and used to balance between compression effort and processing time.
compression
string, object
The TIFF codec supports both lossless and lossy modes of operation, so you can select the one that is appropriate for your goals. Should have one of the values:
lossyis used to apply lossy compression to significantly reduce the image size in exchange for some loss of data, reducing the quality of an image. JPEG compression is used.
{"type": "lossy", "quality": 1..100}is used to apply lossy compression and specify the amount of loss you are willing to accept. Defaults to 75.
losslessis used to apply lossless compression to preserve maximum image detail in exchange for a significantly increased file size. Lempel–Ziv–Welch (LZW) compression is used.
By default, lossless is used if compression is not selected.
compression
string, object
The AVIF codec supports both lossless and lossy modes of operation, so you can select the one that is appropriate for your goals. Should have one of the values:
lossyis used to apply lossy compression to significantly reduce the image size in exchange for some loss of data, reducing the quality of an image.
{"type": "lossy", "quality": 1..100}is used to apply lossy compression and specify the amount of loss you are willing to accept. Defaults to 50.
losslessis used to apply lossless compression to preserve maximum image detail in exchange for a significantly increased file size.
compression
string, object
The WEBP format supports both lossless and lossy modes of operation, so you can select the one that is appropriate for your goals. Should have one of the values:
lossyis used to apply lossy compression to significantly reduce the image size in exchange for some loss of data, reducing the quality of an image.
{"type": "lossy", "quality": 1..100}is used to apply lossy compression and specify the amount of loss you are willing to accept. Defaults to 75.
losslessis used to apply lossless compression to preserve maximum image detail in exchange for a significantly increased file size.
Color space
The API supports changing color space for an output image.
"output": {
"destination": "storage://storage-name/result-path/image-name.jpg",
"metadata": {
"color_space": "RGB"
}
}If you do not specify a color space or color profile when making a request, the API automatically takes care of preserving color space. For images in RGB, the API keeps the RGB color space and assigns the standard sRGB profile to the output. For images in CMYK or GRAY, the API keeps the original color space and also carries over any embedded color profile that was present in the input. This way, the output image stays visually consistent with the source image.
RGB
string
Is the color space for digital images. Use the RGB color mode if your image is supposed to be displayed on any kind of screen.
CMYK
string
Is the color space for printed materials. Use CMYK for any image that will be physically printed, not viewed on a screen.
For CMYK color space, you also can specify the color profile that will be applied to the image.
"output": {
"destination": "storage://storage-name/result-path/image-name.jpg",
"metadata": {
"color_space": {
"type": "CMYK",
"color_profile": "ISO_Coated"
}
}
}ISO_Coated
string
Standard for glossy and matte coated paper (grades 1 and 2).
330%
Coated FOGRA39 ISO 12647-2:2004
ISO_Uncoated
string
Standard for uncoated white natural paper (grade 4).
300%
Uncoated FOGRA29 ISO 12647-2:2004
USWeb_Coated
string
Standard for glossy and matte coated paper in the United States (grades 1, 2, 3 and 4).
300%
SWOP2006 Coated3v2 CGATS TR003
USWeb_Uncoated
string
Standard for uncoated white natural paper in the United States (grade 4).
260%
GRACoL 2013 Uncoated CGATS21-2-CRPC3
Color space is only supported in JPEG format.
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