Frequently Asked Questions

Get answers to common questions about T3XTR text conversion API

Getting Started

How do I get started with T3XTR API? +
Getting started is simple: 1) Register for a free API key at /getting-started.html, 2) Verify your email address, 3) Start making API calls with your key. You get 100 free conversions monthly with no credit card required.
How do I use my API key? +
Include your API key in the X-API-Key header for all requests:
curl -X POST https://api.t3xtr.org/api/markdown-to-html \ -H "X-API-Key: YOUR_API_KEY" \ -H "Content-Type: text/plain" \ -d "# Hello World"
What authentication is required? +
T3XTR uses API key authentication. Simply include your API key in the X-API-Key header. No OAuth or complex authentication flows required.

Conversion Types

How do I convert Markdown to HTML? +
Use the POST /api/markdown-to-html endpoint. Send your Markdown content in the request body and receive clean, semantic HTML in response. Supports GitHub Flavored Markdown including tables and syntax highlighting.
curl -X POST https://api.t3xtr.org/api/markdown-to-html \ -H "X-API-Key: YOUR_KEY" \ -d "# Title\n**Bold text** and *italic text*"
Learn more at Markdown to HTML converter.
Can I generate PDFs from HTML with CSS styling? +
Yes! T3XTR supports full CSS styling including Flexbox, Grid, custom fonts, and complex layouts. Your PDFs will look exactly like your HTML with professional print quality.
curl -X POST https://api.t3xtr.org/api/html-to-pdf \ -H "X-API-Key: YOUR_KEY" \ -d "<style>h1{color:blue}</style><h1>Styled PDF</h1>"
Learn more at HTML to PDF converter.
What's the difference between JSON and YAML? +
JSON is compact and ideal for APIs, while YAML is human-readable and perfect for configuration files. T3XTR converts between both formats preserving data structure. YAML is commonly used for Docker Compose, Kubernetes, and CI/CD pipelines.
How do I extract text from PDF files? +
Upload your PDF file to the POST /api/pdf-to-text endpoint using multipart form data. T3XTR extracts plain text while preserving document structure.
curl -X POST https://api.t3xtr.org/api/pdf-to-text \ -H "X-API-Key: YOUR_KEY" \ -F "file=@document.pdf"
Learn more at PDF to Text converter.

Pricing & Limits

How much does T3XTR cost? +
Free: 100 requests/month
Indie: 5,000 requests/month - $6
Pro: 10,000 requests/month - $11
Enterprise: 20,000 requests/month - $20
Pay-per-use: $0.002 per request when monthly limits exceeded
Is there a file size limit? +
Yes, T3XTR has a 10MB maximum file size limit per request. This applies to all conversion types including PDF uploads, large text documents, and complex HTML files.
Are there rate limits? +
T3XTR implements rate limiting of 300 requests per 15-minute window to ensure fair usage and system stability. This limit applies to all users regardless of plan.

Technical Support

What programming languages can I use with T3XTR? +
T3XTR is a REST API that works with any programming language that can make HTTP requests: JavaScript, Python, PHP, Java, C#, Ruby, Go, and many others. We provide examples in multiple languages.
How do I check my usage and remaining credits? +
Make a GET request to /api/usage with your API key. The response includes your current monthly usage, remaining requests, and credit balance.
curl -H "X-API-Key: YOUR_KEY" https://api.t3xtr.org/api/usage
What if I get an error response? +
T3XTR returns clear error messages with HTTP status codes. Common errors include invalid API key (401), quota exceeded (429), or invalid input format (400). Check our documentation for complete error code reference.

Ready to Start Converting?

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