Developer API

PixlTools API Access

Integrate professional image processing directly into your app. Compress, resize, convert, and enhance images programmatically — no UI required.

No auth required

All endpoints work without API keys or tokens (fair use limits apply)

Zero data retention

Uploaded files are processed and deleted immediately. No logs.

Standard multipart

Submit as multipart/form-data. Works with fetch, axios, curl, or any HTTP library.

Available Endpoints

POST/api/compress

Compress JPG, PNG, or WEBP with custom quality (10–100)

POST/api/resize

Resize image to specific pixel dimensions

POST/api/convert

Convert between JPEG, PNG, and WEBP

POST/api/grayscale

Convert to grayscale / black & white

POST/api/rotate

Rotate image by any angle

POST/api/background-remove

Remove image background

Request Format

All endpoints accept multipart/form-data POST requests. Include your image as file field and any tool-specific params as additional fields.

cURL Example

curl -X POST https://pixltools.com/api/compress \
  -F "file=@your-image.jpg" \
  -F "quality=80" \
  --output compressed.jpg

JavaScript / Fetch Example

const formData = new FormData();
formData.append('file', fileBlob, 'image.jpg');
formData.append('quality', '80');

const response = await fetch('https://pixltools.com/api/compress', {
  method: 'POST',
  body: formData,
});

const blob = await response.blob();
const url = URL.createObjectURL(blob);

Response Format

Image endpoints

Returns the processed image as binary image/jpeg, image/png, or image/webp with a Content-Disposition: attachment header.

Data endpoints

Color picker, metadata, and Base64 tools return application/json. Error responses are always { error: string }.

Rate Limits & Fair Use

Maximum file size: 25MB per request
Rate limit: 30 requests per minute per IP (returns 429 with Retry-After header)
Max image dimensions: 8000×8000px (32 megapixels)
Supported formats: JPEG, PNG, WEBP, TIFF (input); JPEG, PNG, WEBP (output)
No monthly quota — fair use policy applies

Need higher rate limits, SLA guarantees, or a dedicated endpoint? Let us know:

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