
Html to pdf api conversion made easy with our robust and reliable conversion service. Our api allows you to convert html to pdf in a matter of seconds.
We support a wide range of formats, including html, css, and javascript, ensuring that your pdfs look exactly as you intended. Our api is designed to work seamlessly with your application, whether it's a web app or a mobile app.
Our conversion service is fast and efficient, with conversion times of under 1 second for most documents. This means that your users won't have to wait long to access their pdfs.
Our api is also highly customizable, allowing you to tailor the conversion process to your specific needs.
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API Options
DocRaptor is a powerful HTML to PDF API that uses the commercial Prince library, giving it more functionality than open-source-based APIs.
It's especially great for complex PDF documents, saving you time and energy, and making it easy to create high-quality PDF documents.
DocRaptor offers enterprise-grade infrastructure for simultaneous processing and high-volume outputs, eliminating the need to set up your own PDF generation system.
DocRaptor
DocRaptor is the most powerful HTML to PDF API, using the commercial Prince library to generate PDFs, giving it dramatically more functionality than open-source-based APIs.
It's perfect for complex PDF documents, saving you tons of time and energy, and making it easy to create high-quality PDF documents.
Their enterprise-grade infrastructure eliminates the need to set up your own PDF generation system, making it ideal for simultaneous processing or high-volume outputs.
DocRaptor's SOC2 and HIPAA compliance gives you peace of mind, especially if you have strict privacy requirements.
The free tier is limited to 5 document conversions per month, but paid plans start at just $15/month.
You'll also get unlimited test, watermarked documents in every plan, including the free plan.
DocRaptor libraries are maintained in Java, Python, JavaScript, .NET, PHP, and Ruby, making it easy to integrate into your existing codebase.
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App
html2pdf.app is a Chrome-based service that offers a similar experience to PDFShift and pdflayer. Their pricing model is based on 5mb-per-credit.
html2pdf.app's free plan allows up to 100 credits per month, which is a generous offering for those on a tight budget.
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Options

APIs can be implemented in various programming languages, including Java, Python, and C#.
Some APIs are free to use, while others require a paid subscription or a one-time fee.
RESTful APIs are stateless, meaning they don't store any information about the user's session.
API keys are used to authenticate and authorize API requests.
You can choose between synchronous and asynchronous API calls, depending on your application's needs.
Some APIs offer caching, which can improve performance and reduce latency.
API documentation is essential for understanding how to use an API correctly.
APIs can be secured using various methods, including SSL/TLS encryption and OAuth authentication.
Choosing an API
Choosing an API can be a daunting task, but let's break it down. You have two main options: DocRaptor and PDFShift.
If you need less than five documents per month, DocRaptor is the clear winner with enterprise-grade infrastructure and a 99.99% uptime guarantee.
For more than five documents a month, PDFShift offers 50 free documents a month for simple documents under 5 MB.
Their status page shows some downtime, but they admit to it, indicating honesty in their communication.
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Conversion Process
The conversion process of an HTML to PDF API is a straightforward and efficient one. It involves sending a request to the API with the HTML content, and the API returns a PDF file in response.
To begin the conversion process, you need to send a POST request to the API endpoint, specifying the HTML content in the request body. This can be done using a programming language like JavaScript or Python.
The API uses a rendering engine to convert the HTML content into a PDF file. This engine is responsible for layout, formatting, and graphics rendering.
The conversion process is fast and scalable, making it suitable for high-traffic applications. It can handle large HTML files and produce high-quality PDFs in a matter of milliseconds.
The API also supports various output formats, including PDF, PDF/A, and PDF/X. This allows you to choose the format that best suits your needs.
The API's rendering engine is highly customizable, allowing you to specify settings like paper size, orientation, and margins. This gives you fine-grained control over the final PDF output.
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API Features and Setup
You can implement the API without any coding, thanks to integrations like Zapier and make.com. This makes it easy to get started.
The API offers a range of features, including converting HTML to PDF, enabling users to create document templates, and a drag and drop document template editor.
Here are some key features:
- Convert HTML to PDF
- Enable users to create document templates
- Drag and drop document template editor
- Elaborate Workspace logic
- Powerful expression language
- Easily merge your data with PDF template
- On-premises deployment
- Personalized enterprise deployment
- GDPR compliant
- PDF/A-3b, and PDF 1.7 standards
- Create fillable PDF
- Create PDF from web form
Setting up the API is a breeze, thanks to easy-to-follow documentation and examples. You can get started in no time.
Generator Api Features
Generator API Features are a game-changer for developers. Zapier, make.com, and other integrations are available for you to implement the service without any coding.
You can convert HTML to PDF, enable users to create document templates, and use a drag and drop document template editor. The API also features elaborate Workspace logic, a powerful expression language, and the ability to easily merge your data with a PDF template.
Some of the key features include:
- Convert HTML to PDF
- Enable users to create document templates
- Drag and drop document template editor
- Elaborate Workspace logic
- Powerful expression language
- Easily merge your data with PDF template
- On-premises deployment
- Personalized enterprise deployment
- GDPR compliant
- PDF/A-3b, and PDF 1.7 standards
- Create fillable PDF
- Create PDF from web form
You can also set PDF options such as page size and orientation, margins, security, web page settings, and more. The API supports full HTML5/CSS3/JavaScript, making it a versatile tool for developers.
Return Codes

So, you're wondering how you'll know if your API call was successful or not? The SelectPdf REST API returns HTTP response codes to help you figure that out.
Here's a breakdown of the codes you can expect to see:
Usage
Using the SelectPdf Html to Pdf API is a breeze. All you need is a license key and you're good to go.
You can convert any URL or HTML raw code to PDF in an instant. The API can be used with raw HTTP calls, and both GET and POST requests over HTTP or HTTPS are supported.
To make a GET request, you'll need to send all parameters via query string. This means you'll pass the parameters as part of the URL.
For POST requests, you'll need to send the parameters via the request body and set the Content-Type header to application/x-www-form-urlencoded or application/json, depending on how you send the parameters.
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You'll also need to URL encode the parameters url, html, and base_url. This ensures that special characters are handled correctly.
Here are the key things to remember when using the SelectPdf online REST API:
- Send all parameters via query string if GET is used or via request body if POST is used.
- Parameters url, html, and base_url need to be URL encoded.
- For POST requests, set the Content-Type header to application/x-www-form-urlencoded or application/json.
- Use any of the parameters below to customize the pdf conversion. If a parameter is missing, the default value is used by the converter.
Testing and Generation
You can test the SelectPdf HTML To PDF online RESTful API right now. Request a Demo License Key for SelectPdf REST API and get a free trial key valid for 7 days with 200 conversions.
The API is platform independent and can be used with any language, including .NET, Java, PHP, Ruby, Rails, Python, jQuery, and many more. It's a true REST API that can be used with any platform that supports REST.
You can use the API to convert HTML files to PDF at scale, automating the workflow and saving valuable time. Focus on building valuable features and use PDF Generator API for converting your HTML files to PDF.
The API also includes other REST APIs, such as PDF to TEXT REST API and PDF Merge REST API, which can be used in conjunction with the HTML to PDF API.
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