AsanConvert API

Convert files
from your own app

A clean REST API to convert documents, images, audio, video and more — programmatically. HMAC-signed requests, webhook callbacks, 200+ formats.

Get API access — $50.00/mo Contact for sandbox key

POST /api/convert

curl -X POST https://asanconvert.com/api/v1/convert \
  -H "Authorization: HMAC <your-api-key>" \
  -H "X-Timestamp: 1720000000" \
  -H "X-Signature: sha256=abc123..." \
  -H "Content-Type: application/json" \
  -d '{
    "file_url": "https://your-storage.com/input.docx",
    "target_format": "pdf",
    "webhook_url": "https://yourapp.com/webhook/conversion"
  }'

# Response
{
  "conversion_id": "cv_8f4a2b1c",
  "status": "queued",
  "estimated_seconds": 12
}

Everything you need to integrate

REST API

Simple HTTP endpoints, JSON in and out. No SDK required — works with any language or framework.

HMAC Authentication

Every request signed with HMAC-SHA256 and a timestamp. Secure by design, replay attacks blocked.

Webhook Callbacks

Receive a POST to your endpoint the moment a conversion completes or fails. No polling needed.

10 Concurrent Files

Process up to 10 files simultaneously. Built for high-throughput pipelines and batch workflows.

500 MB per File

Same generous limit as the Pro plan — no compromise on file size for production workloads.

High-Priority Queue

API jobs skip the shared queue. Your conversions process faster than regular user requests.

200+ Formats

Documents, images, audio, video, ebooks, archives — the same full format library as the web app.

Status Polling

Prefer to poll? Query conversion status any time with a simple GET. WebSocket support coming soon.

Rate Limits

1,000 requests/minute per key. Need more? Contact us for a custom enterprise plan.

Simple API pricing

API Plan

$50.00 /month

Integrate AsanConvert into your own software.

REST API access

Unlimited API calls

Up to 500 MB per file

HMAC-signed requests

High priority processing

Dedicated API key

Webhook callbacks

Get started — $50.00/mo Request sandbox key

7-day money-back guarantee · Cancel anytime

Documentation

Full docs are in early access. Contact us for a sandbox key and the complete reference.

Authentication

Every request must include three headers:

Authorization: HMAC <api-key>

X-Timestamp: 1720000000 // Unix timestamp (±5 min)

X-Signature: sha256=<hmac-sha256(body + timestamp, secret)>

Your API key and secret are available in your account dashboard after subscribing to the API plan. Requests with an expired timestamp or invalid signature are rejected with 401.

Endpoints

POST /api/v1/convert Submit a conversion job

GET /api/v1/conversions/{id} Get conversion status and result

GET /api/v1/conversions List recent conversions (paginated)

POST /api/v1/conversions/{id}/retry Retry a failed conversion

GET /api/v1/formats List all supported formats

GET /api/v1/account Quota, usage, and plan info

Webhook Payload

{
  "event":         "conversion.completed",
  "conversion_id": "cv_8f4a2b1c",
  "status":        "completed",
  "download_url":  "https://cdn.asanconvert.com/...",
  "conversion_time": 8.4,
  "timestamp":     1720000042
}

Events: conversion.completed · conversion.failed · conversion.processing

Error Codes

400 Bad Request Missing or invalid parameters

401 Unauthorized Invalid API key, signature, or expired timestamp

402 Payment Required API plan inactive or subscription lapsed

422 Unprocessable Unsupported format combination or file too large

429 Too Many Requests Rate limit exceeded (1,000 req/min)

500 Server Error Conversion server error — safe to retry

Ready to integrate?

Get your API key in minutes. Questions? We're happy to help you get set up.

Start building — $50.00/mo Talk to us

Also available: Pro plan for individual users →

Convert filesfrom your own app