Archive for the ‘Research’ Category


IronPDF Alternative for PDF Generation in C# and .NET

February 19th, 2019 / by api2pdf /

IronPDF is a C# library for converting HTML to PDF, URLs to PDF, and images to PDFs. Additionally, it supports extracting data and images from existing PDF files. And finally, you can merge, split, and manipulate PDFs as well. It’s built exclusively for C# and .NET developers. IronPDF is similar to iTextSharp, another .NET PDF […]

Read More

[Solved] Error – Couldn’t connect to server

February 12th, 2019 / by api2pdf /

Intro With our service being as cheap as it is, we deal with all sorts of developers. Some are experienced and ask us very complicated questions about our tech stack, while other developers are quite new to programming. We try to help everyone just the same. The issue described in this blog post seems to […]

Read More

[Solved] Headless Chrome options ignoring landscape mode when printing to pdf

February 9th, 2019 / by api2pdf /

We ran into a tough debugging issue this morning when a customer wrote in saying that our .NET client library was not generating his PDFs in ‘landscape’ mode while using Headless Chrome. The customer provided all of their C# code and I went to work trying to figure out what’s going on. He was using […]

Read More

[Solved] Accessing a secure page with a URL endpoint

February 4th, 2019 / by api2pdf /

We sometimes receive support requests asking how API2PDF can access a secure a page on your website when using the wkhtmltopdf/url or chrome/url endpoints as shown below. A secure page means that it is behind some kind of login wall. When using a URL to PDF endpoint, API2PDF will take your URL that you provided, […]

Read More

[Solved] Access denied | v2018.api2pdf.com used Cloudflare to restrict access

January 23rd, 2019 / by api2pdf /

This post is for individuals who are trying to connect to API2PDF via code. Depending on how you are connecting to API2PDF, or any service that is behind Cloudflare really, you might find that you are getting an error like so: Access denied | v2018.api2pdf.com used Cloudflare to restrict access. The owner of this website (v2018.api2pdf.com) […]

Read More

Best free PrinceXML alternative – Headless Chrome

December 27th, 2018 / by api2pdf /

Intro PrinceXML is a popular library for converting HTML to PDF. It is often touted as the “best” HTML to PDF conversion tool currently on the market. However, it comes with an unbelievably hefty price tag of $3800 for installation on a single server. This is game over for most companies. Free Alternative to PrinceXML […]

Read More

ReportLab Alternative for PDF generation in Python

December 12th, 2018 / by api2pdf /

Intro Click here to start generating PDFs in Python now! Get going in just a few minutes! ReportLab has been around for a very long time and is one of the more popular options for generating PDFs in the Python programming language. According to its website, it receives 50,000 downloads per month and is included […]

Read More

[Solved] Issue rendering UTF-8 or Unicode characters in HTML and PDFs

December 11th, 2018 / by api2pdf /

Intro Api2Pdf is popular all over the world and therefore we have customers who need to generate PDFs in many different languages. One problem that has come up recently is that a customer needed to render characters from their native language: Dutch. Dutch has some special characters that require unicode or UTF-8. For example, these: […]

Read More

Using custom fonts with wkhtmltopdf and Headless Chrome

November 12th, 2018 / by api2pdf /

Intro Using custom fonts with wkhtmltopdf or Headless Chrome is pretty straight forward, but there are a few caveats. First, it is important to know what fonts Api2Pdf supports out of the box with both endpoints. By default, if you do nothing but go to the home page of Api2Pdf and print the below HTML […]

Read More

Debugging Amazon S3, Lambda, Timeouts, ContentOperationNotPermitted, wkhtmltopdf, and Headless Chrome

November 1st, 2018 / by api2pdf /

Intro You ever run into a bug that is so perplexing you don’t even know where to begin? I’d like to share a story that happened this week. As you may know, Api2Pdf runs on AWS Lambda. AWS Lambda is Amazon’s serverless compute service that lets you scale to countless requests very easily. Our two most […]

Read More