png-to-heic

Convert a PNG image to HEIC (High Efficiency Image Container) format. Transparent areas are composited onto a white background since HEIC does not support transparency.

Endpoint

POST /v1/convert/png-to-heic

Content-Type: multipart/form-data

Accepted input: .png files

Output format: .heic (image/heic)

Authentication

Requires either a private API key or a JWT token from a public key.

X-API-Key: sk_live_your_private_key

Or:

Authorization: Bearer <jwt_token>

Request Parameters

Conversion Details

• Uses Pillow with pillow-heif for HEIC encoding
• If the PNG has an alpha channel (RGBA), transparent areas are composited onto a white background
• Output quality is set to maximum (100)

Response

Direct Download (direct_download=true, default)

HTTP 200 OK
Content-Type: image/heic
Content-Disposition: inline; filename="image_20260405_123456789.heic"

Returns raw image bytes.

Metadata Response (direct_download=false)

{
    "presigned_url": "https://spaces.example.com/...",
    "object_key": "env/files/{project_id}/png-to-heic/image_20260405_123456789.heic",
    "filename": "image_20260405_123456789.heic",
    "file_size": 45678,
    "conversion_time_seconds": 0.5
}

Code Examples

Python

import requests

with open("image.png", "rb") as f:
    response = requests.post(
        "https://api.enconvert.com/v1/convert/png-to-heic",
        headers={"X-API-Key": "sk_live_your_private_key"},
        files={"file": ("image.png", f)}
    )

with open("image_20260405_123456789.heic", "wb") as out:
    out.write(response.content)

Node.js

const form = new FormData();
form.append("file", fs.createReadStream("image.png"));

const response = await fetch("https://api.enconvert.com/v1/convert/png-to-heic", {
    method: "POST",
    headers: { "X-API-Key": "sk_live_your_private_key" },
    body: form
});

fs.writeFileSync("image_20260405_123456789.heic", Buffer.from(await response.arrayBuffer()));

PHP

$ch = curl_init("https://api.enconvert.com/v1/convert/png-to-heic");
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ["X-API-Key: sk_live_your_private_key"],
    CURLOPT_POSTFIELDS => ["file" => new CURLFile("image.png")]
]);
$output = curl_exec($ch);
curl_close($ch);
file_put_contents("image_20260405_123456789.heic", $output);

Go

body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, _ := writer.CreateFormFile("file", "image.png")
file, _ := os.Open("image.png")
io.Copy(part, file)
writer.Close()

req, _ := http.NewRequest("POST", "https://api.enconvert.com/v1/convert/png-to-heic", body)
req.Header.Set("Content-Type", writer.FormDataContentType())
req.Header.Set("X-API-Key", "sk_live_your_private_key")
resp, _ := http.DefaultClient.Do(req)

Error Responses

Limits