Watermark API — Free Tier + Pay-As-You-Go

curl -X POST https://api.convertintomp4.com/v1/convert \
  -H "X-Api-Key: ck_your_api_key" \
  -F "file=@input.pdf" \
  -F "targetFormat=pdf" \
  -F "toolOperation=add-watermark-pdf" \
  -F "watermarkText=DRAFT" \
  -F "watermarkPosition=center" \
  -F "watermarkOpacity=30"

import { readFileSync } from "node:fs";
import { ConvertIntoMP4Client } from "convertintomp4";

const apiKey = process.env.CIM4_API_KEY;
const client = new ConvertIntoMP4Client({ apiKey });

// watermarkOpacity is 5-100; watermarkFontSize is 8-200
const { jobId } = await client.uploadDirect(
  readFileSync("input.pdf"),
  "input.pdf",
  "application/pdf",
  {
    targetFormat: "pdf",
    toolOperation: "add-watermark-pdf",
    watermarkText: "DRAFT",
    watermarkPosition: "center",
    watermarkOpacity: 30,
    watermarkColor: "#888888",
  },
);

let job;
do {
  await new Promise((r) => setTimeout(r, 2000));
  job = await fetch(`https://api.convertintomp4.com/v1/status/${jobId}`, {
    headers: { "X-Api-Key": apiKey },
  }).then((r) => r.json());
} while (job.status !== "completed" && job.status !== "failed");

console.log("Watermarked:", job.result?.downloadUrl);

import time, requests

api_key = "ck_your_api_key"

# An image watermark rides along as an extra "additionalFile" part.
job = requests.post(
    "https://api.convertintomp4.com/v1/convert",
    headers={"X-Api-Key": api_key},
    files={
        "file": ("input.jpg", open("input.jpg", "rb"), "image/jpeg"),
        "additionalFile": ("logo.png", open("logo.png", "rb"), "image/png"),
    },
    data={
        "targetFormat": "jpg",
        "toolOperation": "add-watermark-image",
        "watermarkPosition": "bottom-right",
        "watermarkOpacity": "40",
    },
).json()

while True:
    status = requests.get(
        f"https://api.convertintomp4.com/v1/status/{job['jobId']}",
        headers={"X-Api-Key": api_key},
    ).json()
    if status["status"] in ("completed", "failed"):
        break
    time.sleep(2)

print("Watermarked:", status.get("result", {}).get("downloadUrl"))