Convert TXTZ to FB2 API | ConvertHub API

How to convert TXTZ to FB2 using API?

Get started with our simple REST API in minutes

cURL Example

Complete workflow

# Step 1: Submit file for conversion
curl -X POST https://api.converthub.com/v2/convert \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@/path/to/file.txtz" \
  -F "target_format=fb2"

# Step 2: Check job status (replace JOB_ID with actual ID from step 1)
curl https://api.converthub.com/v2/jobs/JOB_ID \
  -H "Authorization: Bearer YOUR_API_KEY"

# Step 3: Download converted file
curl https://api.converthub.com/v2/jobs/JOB_ID/download \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -o "output.fb2"

PHP SDK

<?php
use ConvertHub\ConvertHubClient;

$client = new ConvertHubClient('YOUR_API_KEY');

// Convert txtz to fb2
$conversion = $client->conversions()->convert(
    '/path/to/file.txtz',
    'fb2'
);

// Wait and download
$job = $client->jobs()->waitForCompletion(
    $conversion->getJobId()
);

if ($job->isCompleted()) {
    $client->jobs()
        ->getDownloadUrl($job->getId())
        ->downloadTo('output.fb2');
}

View PHP documentation →

JavaScript SDK

import { ConvertHubClient } from '@converthub/sdk';

const client = new ConvertHubClient({
    apiKey: 'YOUR_API_KEY'
});

// Convert txtz to fb2
const conversion = await client.convertFile({
    file: '/path/to/file.txtz',
    targetFormat: 'fb2'
});

// Wait for completion
const job = await conversion.waitForCompletion();

// Download result
if (job.status === 'completed') {
    await conversion.download('output.fb2');
}

View JavaScript documentation →

Built for Reliability & Scale

Everything you need for seamless file conversion

S3 & R2 Bucket Integration

Direct integration with AWS S3 and Cloudflare R2. Converted files automatically pushed to your storage.

AWS S3 Cloudflare R2

Secure & Private

256-bit SSL encryption, automatic file deletion after processing, GDPR compliant infrastructure.

SSL/TLS GDPR

High Performance

Optimized for speed with parallel processing, smart caching, and global CDN delivery.

99.9% Uptime CDN

Asynchronous Processing

Non-blocking job-based workflow. Submit files and track progress with unique job IDs.

Job Queue Webhooks

Privacy First

Your files are never stored permanently. Automatic deletion after conversion ensures data privacy.

Auto-delete No logs

Rock-Solid Reliability

Processing millions of conversions monthly with redundant infrastructure and automatic failover.

99.9% Uptime 24/7 Monitoring

Use API to convert from TXTZ to FB2

Common use cases

Digital Libraries

Convert ebooks for universal accessibility

Publishing Platforms

Support multiple reader formats automatically

Educational Systems

Distribute content in preferred formats

API Response Structure

Clean, predictable JSON responses

POST /v2/convert - Response

{
  "success": true,
  "data": {
    "job_id": "job_BQyMVCUN-Fw6S-k7WP",
    "status": "processing",
    "source_format": "txtz",
    "target_format": "fb2",
    "created_at": "2025-09-24T23:12:41.700066Z",
    "estimated_time": 15
  }
}

GET /v2/jobs/{id} - Response

{
  "success": true,
  "data": {
    "job_id": "job_443VgIGO-4Zf1-2Xk8",
    "status": "completed",
    "progress": 100,
    "download_url": "https://api.converthub.com/v2/download/...",
    "file_size": 245632,
    "completed_at": "2025-09-24T23:12:53.700202Z"
  }
}