OpenPDF vs catj vs wkhtmltopdf
Overview
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CLI (Node.js)
Manual
Detailed Comparison
wkhtmltopdf and wkhtmltoimage are command line tools to render HTML into PDF and various image formats using the QT Webkit rendering engine. These run entirely "headless" and do not require a display or display service. | 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. | It makes it easier to understand the structure of JSON files. The output is valid JavaScript which can be used directly in code. It's very helpful when writing queries for tools like jq. |
| - | - | Easier to understand; Valid Javascript Output |
Statistics | ||
GitHub Stars 14.4K | GitHub Stars 4.1K | GitHub Stars 1.3K |
GitHub Forks 1.9K | GitHub Forks 673 | GitHub Forks 21 |
Stacks 62 | Stacks 3 | Stacks 1 |
Followers 110 | Followers 29 | Followers 5 |
Votes 0 | Votes 0 | Votes 0 |
Integrations | ||
| No integrations available | No integrations available | |
What are some alternatives to wkhtmltopdf, OpenPDF, catj?
DocRaptor
DocRaptor makes it easy to convert HTML to PDF and XLS format. Choose your document format, select configuration options and make an HTTP POST request to our server. DocRaptor returns your file in a matter of seconds. We provide extensive documentation and examples to get you started, and our API makes it easy to use DocRaptor to generate PDF and Excel files in your own web applications.
Pandoc
It is a free and open-source document converter, widely used as a writing tool and as a basis for publishing workflows. It converts files from one markup format into another. It can convert documents in (several dialects of) Markdown, reStructuredText, textile, HTML, DocBook, LaTeX, MediaWiki markup, TWiki and many more.
jpg-to-excel-utils
A powerful image-to-table extraction utility. It allows developers to parse JPG/PNG images containing tabular data and convert them into machine-readable formats (Excel, CSV, JSON) for data processing pipelines.
AllInOneTools
AllInOneTools is a lightweight, developer-focused web platform that provides utilities for PDF processing, image optimization, text manipulation, SEO analysis, and Google AdSense workflows. It is designed for developers, indie hackers, and website owners who need fast, browser-based tools to support development, optimization, and monetization tasks. The platform emphasizes performance, privacy-friendly processing, and zero-installation workflows for modern web projects.
Inkfluence AI
Plan, write, and publish books, PDF guides, workbooks, and audiobooks with AI workflows. Customize branding and export instantly.
TemplateFox
Generate professional PDFs from HTML templates via API. Create invoices, reports, certificates and more with our fast, reliable PDF generation service.
DocXtract
AI-powered OCR and document extraction API converts documents to structured JSON in seconds. 98%+ accuracy for invoices, Aadhaar, PAN, salary slips & 20+ document types. Pay per page.
PDFGate
PDFGate is a developer-focused PDF API for generating and managing PDFs from applications. It supports HTML-to-PDF conversion, fillable PDF form fields, and a growing set of PDF utilities designed for backend workflows. The API is built for reliability and precision, making it suitable for invoices, contracts, reports, and other transactional documents. PDFGate emphasizes modern API design, predictable rendering, and features often missing from simpler HTML-to-PDF services, such as native support for interactive form fields. It is designed for teams that need more than basic PDF generation, with a roadmap that includes digital signatures, SDKs, and additional PDF processing endpoints.
Cipher Tools Hub
Free online tools and developer APIs for PDF processing, image optimization, data formatting, and security tasks
Creatoryn
Creatoryn is a free web-based suite of image tools for format conversion, resizing, compression, and cropping. It supports bulk workflows and processes images locally in the browser (no cloud processing required).
