Unlock the Power of KyaToolsJi

Integrate our high-performance PDF and Image processing engine directly into your applications. Scalable, secure, and lightning fast.

Lightning Fast

Processed on edge servers for sub-second latency on standard operations.

Secure by Design

End-to-end encryption. Files are automatically processed and purged.

Developer First

Clean REST API with intuitive endpoints and comprehensive SDKs.

Authentication

The KyaToolsJi API uses API keys to authenticate requests. You can view and manage your API keys in the Developer Dashboard.

Your API keys carry many privileges, so be sure to keep them secure! Do not share your secret API keys in publicly accessible areas such as GitHub, client-side code, and so forth.

BASH

curl -X GET https://api.kyatoolsji.com/v1/status \
  -H "Authorization: Bearer YOUR_API_KEY"

POST /v1/pdf/merge

Merge PDFs

Combine multiple PDF documents into a single file. Supports order customization and metadata preservation.

Parameters

Param	Type	Required	Description
`files`	Array<File>	Yes	List of PDF files to merge (min 2).
`async`	Boolean	No	Set to true for large jobs to process in background.

Request Example

const axios = require('axios');
const formData = new FormData();
formData.append('files', fs.createReadStream('doc1.pdf'));
formData.append('files', fs.createReadStream('doc2.pdf'));

axios.post('https://api.kyatoolsji.com/v1/pdf/merge', formData, {
    headers: { 'Authorization': 'Bearer KEY' }
}).then(response => {
    console.log(response.data.download_url);
});

import requests

files = [
    ('files', open('doc1.pdf', 'rb')),
    ('files', open('doc2.pdf', 'rb'))
]
headers = {'Authorization': 'Bearer KEY'}

response = requests.post('https://api.kyatoolsji.com/v1/pdf/merge', files=files, headers=headers)
print(response.json()['download_url'])

curl -X POST https://api.kyatoolsji.com/v1/pdf/merge \
  -H "Authorization: Bearer KEY" \
  -F "files=@doc1.pdf" \
  -F "files=@doc2.pdf"

POST /v1/image/resize

Resize Image

Smart resizing for images. Supports fixed dimensions, percentage scaling, and aspect ratio preservation with AI-powered sharpening.

Parameters

Param	Type	Required	Description
`file`	File	Yes	The source image file (JPG, PNG, WEBP).
`width`	Integer	No	Target width in pixels.
`height`	Integer	No	Target height in pixels.
`strategy`	String	No	fit \| fill \| stretch (Default: fit).

Request Example

JSON (Body)

{
  "width": 1920,
  "height": 1080,
  "strategy": "cover",
  "sharpen": true
}

Error Handling

We use standard HTTP status codes. All error responses will contain a JSON body with more details.

Code	Meaning	Description
200	OK	Success!
400	Bad Request	Invalid parameters provided.
401	Unauthorized	API Key missing or invalid.
429	Too Many Requests	Rate limit exceeded.
500	Server Error	Something went wrong on our end.