Docs/APIs/Image Converter

Image Converter

Convert between image formats including HEIC, WebP, AVIF

OperationalCredits 5 per callp50 1707msImagesStar

Overview

Powered by ImageMagick, Image Converter handles virtually any image format. Perfect for processing user uploads, converting Apple HEIC photos for web use, or optimizing images for different platforms.

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

POSThttps://api.apiverve.com/v1/imageconverter
curl -X POST https://api.apiverve.com/v1/imageconverter \
  -H "x-api-key: your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
  "outputFormat": "png"
}'
const res = await fetch('https://api.apiverve.com/v1/imageconverter', {
  method: 'POST',
  headers: {
    'x-api-key': 'your_api_key_here',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "outputFormat": "png"
}),
});

if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);

const { data } = await res.json();
console.log(data);
import requests

res = requests.post(
    "https://api.apiverve.com/v1/imageconverter",
    headers={"x-api-key": "your_api_key_here"},
    json={
    "outputFormat": "png"
},
    timeout=15,
)
res.raise_for_status()

print(res.json()["data"])
package main

import (
	"fmt"
	"io"
	"net/http"
	"strings"
)

func main() {
	body := strings.NewReader(`{
  "outputFormat": "png"
}`)
	req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/imageconverter", body)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-api-key", "your_api_key_here")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	out, _ := io.ReadAll(res.Body)
	fmt.Println(string(out))
}

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Parameters

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them.

ParameterTypeDescription
imageRequiredstringUpload an image file to convert (supported formats: HEIC, HEIF, AVIF, WebP, PNG, JPG, GIF, TIFF, BMP, PDF, SVG)
outputFormatRequiredstringTarget format
pngjpgwebpgiftiffbmppdf
qualityOptionalintegerOutput quality (applies to jpg/webp)
default 90 · range 1–100
maxWidthOptionalPremiumintegerMaximum width in pixels (maintains aspect ratio)
range 1–10000
maxHeightOptionalPremiumintegerMaximum height in pixels (maintains aspect ratio)
range 1–10000

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

Sample response
{
  "status": "ok",
  "error": null,
  "data": {
    "id": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
    "inputFormat": "heic",
    "outputFormat": "png",
    "inputSize": 2456789,
    "outputSize": 1834567,
    "mimeType": "image/png",
    "expires": 1707350400000,
    "downloadURL": "https://storage.googleapis.com/apiverve/imageconverter/a1b2c3d4.png"
  },
  "code": 200
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

FieldTypeExampleDescription
idstring"a1b2c3d4-5678-90ab-cdef-1234567890ab"Unique identifier for the converted image file
inputFormatstring"heic"Original format of the uploaded image file
outputFormatstring"png"Format of the converted image result
inputSizePremiumnumber2456789File size in bytes of the input image
outputSizePremiumnumber1834567File size in bytes of the output image
mimeTypePremiumstring"image/png"MIME type of the converted image file
expiresnumber1707350400000Unix timestamp when converted image expires
downloadURLstring"https://storage.googleapis.com/apiverve/imageconverter/a1b2c3d4.png"Direct URL to download the converted image file

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

StatusMeaningWhat to do
400Input was rejectedRead error; it names the parameter.
401Key missing or invalidCheck the header name and the key value.
403Key valid, but not permittedA key restriction or IP allow-list; see key scoping.
429Rate limited, or out of creditsRead error to tell them apart; see rate limits.

Set up Image Converter

Ready to put it to work? Set up Image Converter on APIVerve.

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