The Top 12 PDF APIs to Make Your Life Easier

What are PDF APIs?

PDF – Portable Document Format – is a popular file format that produces an electronic image file that looks like a printed document, containing text, graphics, and more, which can be electronically sent, printed, and viewed with great ease.

PDF files are compatible across many platforms and exist independent of the application software, hardware, and operating system used to create it.

PDF & PDF converter APIs allow you to convert your content into PDF files or to convert PDF files into other file types for various uses.

PDFs are valuable for business use as they are widely used, maintain their format, work with any operating system, and can be password protected.

List of PDF & PDF Converter APIs

Here is a list of the top PDF APIs (available on RapidAPI.com) that you might consider for use:

1. HTML to PDF API

The HTML to PDF API (by NeutrinoAPI.com) allows you to convert HTML files to PDF documents using a high-quality HTML/CSS rendering engine that can work with most CSS and HTML content.

It doesn’t, however, execute javascript commands.

Unique among HTML to PDF rendering, it creates a compact PDF document retains original text and links.

HTML to PDF API Endpoints

• HTML to PDF – converts HTML to PDF.
• https://neutrinoapi.com/stats – retrieves real-time usage statistics for your Neutrino API account.

HTML to PDF API Pricing

• Free Tier – Batch 1/s
• Tier 1 – $10/mo – Batch 5/s
• Tier 2 – $50/mo – Batch 25/s
• Tier 3 – $250/mo – Batch 100/s

2. Instant PDF API

Using this package you can generate PDFs using JSON markup language.

It also accepts HTTP POST requests to return PDF files.

Instant PDF API Endpoints

• generating a PDF – generates an instant PDF file based on your JSON input.

Instant PDF API Pricing

Instant PDF is part of membership at GitHub, a suite of public and open source projects.

• Developer – $7/mo
• Team – $9/mo
• Business – $21

3. Web2Pdf API

This Web-to-PDF API is a PDF converter API (as the name suggests), that allows you to convert web pages easily to PDF files, fully supporting HTML and CSS coding, page breaks, JavaScript, and more.

Web2Pdf Endpoints

• Convert Url – posts URL to the server.
• Convert Url JSon – converts URL into JSON format.

Web2Pdf Pricing

Services offered by Convert API.

• Free Package – $0 at 1500 seconds (one time)
• Prepaid – starts $100 at 1500 seconds (one time)
• Subscriptions – starts at $15/mo 3000 seconds

4. Pdf2Image API

This PDF to Image API takes PDF files and saves them as image files which can be extracted to jpg, png or tiff images.

Pdf2Image API Endpoints

• Convert File – converts the file

Pdf2Image API Pricing

Services offered by Convert API.

• Free Package – $0 at 1500 seconds (one time)
• Prepaid – starts $100 at 1500 seconds (one time)
• Subscriptions – starts at $15/mo 3000 seconds

5. Excel2Pdf API

This is a convenient API is excellent for converting Excel documents to images and PDF files.

Convert Excel file types like:

• CSV
• XLS
• XLSB
• XLSX
• XLT
• XLTX

to file types like:

• PDF
• PDFA
• PNG
• JPG
• TIF

Excel2Pdf API Endpoints

• Convert File – post file to the server.

Excel2Pdf API Pricing

Services offered by Convert API.

• Free Package – $0 at 1500 seconds (one time)
• Prepaid – starts $100 at 1500 seconds (one time)
• Subscriptions – starts at $15/mo 3000 seconds

6. HTML2PDF API

Another HTML to PDF feature-rich API package that quickly converts HTML to PDF.

Convert web pages into PDF in C#, Java, Ruby, Python, PHP, Perl, VB.net and other programming languages fast and easy.

HTML2PDF API Endpoints

• urltopdf – URL/web page to PDF

HTML2PDF API Pricing

• Starter Plan – $19/mo – 1000 credits
• Professional Plan – $39/mo – 3000 credits
• Advanced Plan – $79/mo – 10000 credits
• Private Server Plan – must contact the company for rates.

7. Pdf2Jpg API

If you want a fast, easy way to convert a PDF to a JPG, this API package is ideal.

You can even download the file to a zip file for convenience.

With Pdf2Jpg, conversion is fast, reliable and produce high-quality pictures.

Pdf2Jpg API Endpoints

• Get the status of a conversion – Get the status of an existing conversion and the URLs of the converted pictures and more.
• Post a PDF to be converted to JPG – Initiate a conversion by posting a PDF and the expected conversion quality.

Pdf2Jpg API Pricing

The Pdf2JPG API is a free service.

8. PDF to PNG Rasterizer API

This API allows you to convert PDF documents to images, outputting PNG images of the pages. Input can be entered through a POST upload, or you can use the GET command to send the URL of a publicly available PDF. The PNGs can be accessed one by one using a session token or together as Base64 in HTML or JSON.

PDF to PNG Rasterizer Endpoints

• for PDF upload – uploads the PDF.
• for public PDF URLs – extracts images by passing the URL of a publicly available PDF file

PDF to PNG Rasterizer Pricing

PDF to PNG Rasterizer has a free version with a paid version with further features to come soon.

9. HTML PDF API

A cloud service allowing you to convert HTML to PDF with standard web technologies, HTML PDF API is a simple, convenient way to add PDF export function to your mobile applications.

HTML PDF API Endpoints

• Asset Create – Upload new assets to serverConnect to Endpoint.
• Asset Delete – Delete asset from serverConnect to Endpoint.
• Asset Get – Download asset from server as fileConnect to Endpoint.
• Assets List – Get list of all assets uploaded to serverConnect to Endpoint.
• Credits count – Get the current number of credits.Connect to Endpoint.
• PDF – You can send only one of following parameters: url, file, html.

HTML PDF API Pricing

• One Time – 100 credits, 25MB for assets – 5 Euros/$5.82
• Monthly Subscription – 100 credits, 25MB for assets – 4 Euros/$4.66
• Yearly Subscription – 1,200 credits, 25MB for assets – 40.80 Euros/$47.52

10. SelectPdf HTML to PDF API

This online API is a convenient solution that allows you to generate PDF files from web pages and HTML source code within your applications. Easy to use and integrate.

SelectPdf HTML to PDF Endpoints

• SelectPdf API Endpoint – Converts any URL to a PDF file

SelectPdf HTML to PDF Pricing

Montly Plans

• Entry Level Monthly: $19 USD/month (includes 2,000 conversions)
• Standard Level Monthly: $29 USD/month (includes 5,000 conversions)
• Advanced Level Monthly: $59 USD/month (includes 20,000 conversions)
• Premium Level Monthly: $119 USD/month (includes 50,000 conversions)
• Ultra Level Monthly: $229 USD/month (includes 100,000 conversions)
• Dedicated Level Monthly: $449 USD/month (includes unlimited conversions)

Annual Plans

You receive 2 months free of SelectPdf Online REST API with each annual plan.

• Entry Level Annual: $190 USD/year (includes 2,000 conversions/month)
• Standard Level Annual: $290 USD/year (includes 5,000 conversions/month)
• Advanced Level Annual: $590 USD/year (includes 20,000 conversions/month)
• Premium Level Annual: $1,190 USD/year (includes 50,000 conversions/month)
• Ultra Level Annual: $2,290 USD/year (includes 100,000 conversions/month)
• Dedicated Level Annual: $4,490 USD/year (includes unlimited conversions/month)

11. API2PDF API

Api2Pdf is another PDF conversion tool that has no rate limits or file size restrictions.

Generate PDFs from:

• HTML
• URLs
• Images
• and Office Documents

This API also has the ability to merge PDF files.

Endpoints

• Convert raw HTML to PDF
• Convert URL to PDF
• Convert doucment or iamge to PDF
• Convert multiple PDFs into a single PDF

Pricing

• Basic – Free up to 50 API calls/month
• Pro – $2.00 for 1,000 API calls/month
• Ultra – $11.00 for 10,000 API calls/month
• Mega – $101.00 for $100,000 API calls/month

12. HTML to PDF Conversion API

HTML to PDF Conversion API is another PDF conversion API created by the folks at restpack.

With this HTML to PDF API, you can convert raw HTML or a specific URL into a PDF with the GET or POST method.

Endpoints

• Convert raw HTML or URL to PDF
• Convert raw HTML or URL to PDF (with the POST method)

With each endpoint you can specify:

• The raw HTML string of a page that you want to capture
• Return a JSON response with the resulting image’s URL instead of the image itself
• Custom page size for document
• Define the margins of the PDF
• Add additional CSS to be injected into the page
• Add additional JavaScript to be injected before the render of the page
• Prescroll options – force the page to scroll before capture of the webpage
• TTL – time in milliseconds for the resulting image to be cached for further requests
• Refresh cache of an old screenshot
• Define the user-agent header
• Add a custom accept-language header string
• Add additional header requests
• Serialize response fild to base64
• Define the URL to be captured

Pricing
The restpack HTML to PDF conversion API pricing and cost is defined here.

Prices start at $9.95 and go up to $99.95 and beyond for more features and requests.

Summary: Best PDF APIs

Do you agree with our list of top PDF APIs? What do you think is the best PDF API? Let us know your thoughts in the comments below.