iText vs Konik

iText

[DEPRECATED] Core Java Library + PDF/A, xtra and XML Worker. Only security fixes will be added — please use iText 7 (by itext)

PDF

Source Code

itextpdf.com

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Konik

A library to create, read and validate ZUGFeRD compliant invoices. Available for Java and .NET (by konik-io)

PDF Invoice Java Zugferd e-invoice Konik

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iText		Konik
	Project
3	Mentions	-
1,560	Stars	42
0.4%	Growth	-
0.0	Activity	1.7
5 days ago	Latest Commit	over 1 year ago
Java	Language	Java
GNU General Public License v3.0 or later	License	GNU General Public License v3.0 or later

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

iText

Posts with mentions or reviews of iText. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-11.

PDF rendering server-side using HTML 5 + CSS 3
5 projects | /r/java | 11 Dec 2023

Are you looking for a way to render PDF's or produce them? If you want to produce PDF's, I've used https://pdfbox.apache.org/ successfully as well as https://itextpdf.com/ (potentially costs money).
I interviewed Bruno Lowagie, who successfully commercialized his FOSS library, iText, between 2008 and 2018, for Code Code Ship: “Commercializing iText had a significant impact on the quality of the library”
1 project | /r/programming | 11 Apr 2023

So, the case study would be an optional request/collaboration, but slapping your logo on their site (as seen on their home page just below the fold) is not written as optional. Say what you will about AGPL, but if you're a paying customer, this should be an easy provision to strike from the agreement if requested. They declined and our internal legal team refused to accept the agreement as a result and so we found a different provider.
How do i convert html file to pdf file using java(fx)?
3 projects | /r/JavaFX | 30 Dec 2022

Not really a JavaFX question as JavaFX is a UI framework. Your question is therefore just related to Java. To answer that I've seen a similar feature from IText (https://itextpdf.com) or OpenPDF (https://github.com/LibrePDF/OpenPDF) as an open source alternative. Maybe take a look at those for a start and check if they provide you what you're looking for.

Konik

Posts with mentions or reviews of Konik. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning Konik yet.
Tracking mentions began in Dec 2020.

What are some alternatives?

When comparing iText and Konik you can also consider the following projects:

Apache PDFBox - Mirror of Apache PDFBox

OpenPDF - OpenPDF is a free Java library for creating and editing PDF files, with a LGPL and MPL open source license. OpenPDF is based on a fork of iText. We welcome contributions from other developers. Please feel free to submit pull-requests and bugreports to this GitHub repository.

Dynamic Jasper - Dynamic Reports using Jasper Reports

flyingsaucer - XML/XHTML and CSS 2.1 renderer in pure Java

Apache FOP - Apache XML Graphics FOP

itext-pdfsweep-java - Remove content from your digital documents irretrievably instead of just covering it up. Redact text, images, parts of images or drawings for complete confidentiality. iText pdfSweep complies with GDPR for data redaction.

fastInvoiceAI - FastInvoiceAI - Automate accounting of Peppol and EHF invoices in Java