Convert WebP Images to JPG via API
Convert modern WebP images to universally compatible JPG format via REST API. Simple multipart upload, configurable quality output, and seamless automation support.
# Convert WebP image to JPG
curl -X POST \
https://api.convertfilefast.com/v2/convert/webp-to-jpg \
-H "Authorization: Bearer YOUR_API_KEY" \
-F "file=@image.webp" \
-F "quality=90" \
--output image.jpg
# HTTP 200 OK — Content-Type: image/jpegimport requests
response = requests.post(
"https://api.convertfilefast.com/v2/convert/webp-to-jpg",
headers={"Authorization": "Bearer YOUR_API_KEY"},
files={"file": open("image.webp", "rb")},
data={"quality": 90}
)
with open("image.jpg", "wb") as f:
f.write(response.content)const formData = new FormData();
formData.append("file", fs.createReadStream("image.webp"));
formData.append("quality", "90");
const response = await fetch(
"https://api.convertfilefast.com/v2/convert/webp-to-jpg",
{
method: "POST",
headers: { "Authorization": "Bearer YOUR_API_KEY" },
body: formData,
}
);
fs.writeFileSync("image.jpg", Buffer.from(await response.arrayBuffer()));// n8n HTTP Request Node — Convert WebP to JPG
{
"method": "POST",
"url": "https://api.convertfilefast.com/v2/convert/webp-to-jpg",
"contentType": "multipart-form-data",
"bodyParameters": {
"parameters": [
{ "name": "file", "parameterType": "formBinaryData", "inputDataFieldName": "data" },
{ "name": "quality", "value": "90" }
]
},
"options": { "response": { "responseFormat": "file" } }
}Advantages
Why use our API?
Complete and reliable solution for integration in any tech stack.
Universal Compatibility
Output JPG files open on every device, browser, and image editor without special support for WebP.
Configurable Quality
Set JPG output quality from 1 to 100. Balance file size and visual fidelity for your use case.
Simple Multipart Upload
Upload your WebP file with a single multipart POST request. No base64 encoding or special setup required.
Fast Processing
WebP to JPG conversions complete in milliseconds. High-throughput infrastructure for production workloads.
n8n & Automation Ready
Use the HTTP Request node in n8n to convert WebP images automatically from any trigger.
Zero Storage
Your WebP images are converted in memory and deleted immediately. Files are never stored on our servers.
Or call this from Claude, Cursor, or any MCP client
Convert File Fast ships a native Model Context Protocol server. Give this conversion to an AI agent as a single tool call — no HTTP client, no binary handling, per-user API keys.
npx -y convertfilefast-mcpconvert_file({ target_format: "jpg", source_url: "https://example.com/file.webp" })Start Converting WebP to JPG
Get your API key and convert WebP images to JPG instantly. Free plan includes 10 conversions per month.
No credit card. 10 free conversions on Free plan.