Image Converter API

POST

Convert iPhone HEIC photos and modern formats into web-ready images.

Image Converter transforms images between formats. Convert HEIC from iPhones, modern WebP and AVIF formats, or classic PNG, JPG, GIF, and TIFF. Includes optional resizing and quality control.

Try it — live request, no key required

Request

POSTapi.apiverve.com/v1/imageconverter

Body

outputFormatstring

image

Click or drag a file to upload.heic, .heif, .avif, .webp, .png, .jpg, .jpeg, .gif, .tiff, .tif, .bmp, .pdf, .svg · max 400KB for live testing

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "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
}

About the Image Converter API

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.

What people use it for

Job Site Photo Submissions: Contractors upload HEIC snapshots from job sites, converting them to standard JPG format through the download URL before attaching them to client progress reports.
Vector Logo Rasterization: To prepare brand assets for presentation decks, marketing portals convert uploaded SVG files into PNG images with defined compression quality.
Graphic Design Submissions: When digital artists submit heavy TIFF illustrations, the review platform converts each upload into WebP format for fast in-browser jury evaluation.
Signed Receipt Archiving: Turn smartphone photos of paper invoices into standardized PDF files before routing expense claims to accounting teams for reimbursement.

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Questions.

Common questions about the Image Converter API.

Read the docs →

Which image formats can I upload and convert?

You can upload HEIC, HEIF, AVIF, WebP, PNG, JPG, JPEG, GIF, TIFF, BMP, PDF, and SVG files up to 10 MB. Output formats include modern web standards such as WebP and AVIF alongside standard PNG and JPG files. Quality control settings are supported for JPG and WebP targets.

Does resizing an image distort its proportions?

No. On paid plans, when you set maximum width or height parameters, Image Converter scales the image while maintaining its original aspect ratio. Your image fits inside the boundaries you set without stretching or distortion.

Can I resize images and inspect file sizes on the Free plan?

No, pixel resizing parameters for maximum width and height require a paid plan. Paid plans also unlock output size, input size, and MIME type metadata in the response. The Free plan handles basic format conversion without dimension adjustments.

How long are converted images available for download?

Converted files are hosted temporarily and return with an expiration timestamp alongside the download URL. You should fetch the converted image and transfer it to your own storage before that expiration timestamp passes.

What would converting 10,000 images a month cost me?

Converting 10,000 images consumes 100,000 credits, which uses half of Starter's monthly allowance. On Starter, that works out to about $1.50 per 1,000 images or $0.0015 per conversion. The Free plan includes 20 image conversions each month.

Request parameters — POST /v1/imageconverter

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`image`Required	string		Upload an image file to convert (supported formats: HEIC, HEIF, AVIF, WebP, PNG, JPG, GIF, TIFF, BMP, PDF, SVG)
`outputFormat`Required	string	`png`	Target format `pngjpgwebpgiftiffbmppdf`

Optional

Parameter	Type	Example	Description
`quality`Optional	integer	`90`	Output quality (applies to jpg/webp) default 90 · range 1-100
`maxWidth`OptionalPremium	integer	`1920`	Maximum width in pixels (maintains aspect ratio) range 1-10000
`maxHeight`OptionalPremium	integer	`1080`	Maximum height in pixels (maintains aspect ratio) range 1-10000

Example request

curl -X POST "https://api.apiverve.com/v1/imageconverter" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"outputFormat":"png","quality":90,"maxWidth":1920,"maxHeight":1080}'

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.
`content-type`Required	POST body	`application/json`

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.

Response — POST /v1/imageconverter

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

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.

Field	Type	Example	Description
`id`	string	`"a1b2c3d4-5678-90ab-cdef-1234567890ab"`	Unique identifier for the converted image file
`inputFormat`	string	`"heic"`	Original format of the uploaded image file
`outputFormat`	string	`"png"`	Format of the converted image result
`inputSize`Premium	number	`2456789`	File size in bytes of the input image
`outputSize`Premium	number	`1834567`	File size in bytes of the output image
`mimeType`Premium	string	`"image/png"`	MIME type of the converted image file
`expires`	number	`1707350400000`	Unix timestamp when converted image expires
`downloadURL`	string	`"https://storage.googleapis.com/apiverve/imageconverter/a1b2c3d4.png"`	Direct URL to download the converted image file

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 10 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Image Converter calls	Per 1,000 calls
Free	Free	200	20	Free
Starter	$29.99	200,000	20,000	$1.50
Pro	$99.99	1,000,000	100,000	$1.00
Mega	$299.99	4,000,000	400,000	$0.75

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — POST /v1/imageconverter

No SDK to install — this is a plain HTTPS call to /v1/imageconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/imageconverter" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/imageconverter-apiSource, issues and the examples this page is built from.ReferenceImage Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/imageconverternpm apiverve-imageconverterPyPI APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — POST /v1/imageconverter

Install the Node.js SDK, then call the Image Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/imageconverter

Node.js

const res = await fetch("https://api.apiverve.com/v1/imageconverter", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/imageconverterThe published Node.js client, versioned and signed.GitHubapiverve/imageconverter-apiSource, issues and the examples this page is built from.ReferenceImage Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

apiverve-imageconverterPyPI APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — POST /v1/imageconverter

Install the Python SDK, then call the Image Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-imageconverter

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/imageconverter",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

PyPIapiverve-imageconverterThe published Python client, versioned and signed.GitHubapiverve/imageconverter-apiSource, issues and the examples this page is built from.ReferenceImage Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/imageconverternpm APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — POST /v1/imageconverter

Install the C# / .NET SDK, then call the Image Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.ImageConverter

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/imageconverter");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.ImageConverterThe published C# / .NET client, versioned and signed.GitHubapiverve/imageconverter-apiSource, issues and the examples this page is built from.ReferenceImage Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/imageconverternpm apiverve-imageconverterPyPI

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — POST /v1/imageconverter

No SDK to install — this is a plain HTTPS call to /v1/imageconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/imageconverter", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/imageconverternpm apiverve-imageconverterPyPI APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — POST /v1/imageconverter

No SDK to install — this is a plain HTTPS call to /v1/imageconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/imageconverter");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/imageconverternpm apiverve-imageconverterPyPI APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — POST /v1/imageconverter

No SDK to install — this is a plain HTTPS call to /v1/imageconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/imageconverter")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/imageconverternpm apiverve-imageconverterPyPI APIVerve.API.ImageConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Image Converter API

Try it — live request, no key required

About the Image Converter API

What people use it for

Ways to call it

Questions.

Request parameters — POST /v1/imageconverter

Required

Optional

Authentication

Response — POST /v1/imageconverter

Response fields

Response headers

Errors

What a call costs — 10 credits per call

Call it from cURL — POST /v1/imageconverter

Resources

Also published for

Call it from Node.js — POST /v1/imageconverter

Resources

Also published for

Call it from Python — POST /v1/imageconverter

Resources

Also published for

Call it from C# / .NET — POST /v1/imageconverter

Resources

Also published for

Call it from Go — POST /v1/imageconverter

Resources

Also published for

Call it from PHP — POST /v1/imageconverter

Resources

Also published for

Call it from Ruby — POST /v1/imageconverter

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Image Converter API

Images

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