Open Source Alternatives
  • Alternatives
  • Categories
    Categories by size882 projects
    • Developer Tools461
    • AI & Machine Learning404
    • Web Development196
    • Business & Productivity191
    • Communication & Collaboration126
    • Security & Monitoring126
    • IT Management123
    • Product & Project Management106
    • Cloud & Hosting105
    • Data & Analytics104
    Browse all 21 categoriesLLMOps & AI Tooling, Design & Creative and 9 more
  • Blog
  • Advertise
SearchNotion, Slack, password manager.../
Submit
Open Source Alternatives
  • Alternatives
    • Developer Tools461
    • AI & Machine Learning404
    • Web Development196
    • Business & Productivity191
    • Communication & Collaboration126
    • Security & Monitoring126
    • Browse all 21 categories
  • Blog
  • Advertise
Submit your project

New open source projects by email

The projects we add and every new guide. Free, unsubscribe any time.

Open Source Alternatives LogoOpen Source Alternatives

Handpicked Open Source Alternatives to Paid Softwares

Product

  • Categories
  • Tag
  • Advertise

Resources

  • Blog
  • Collection
  • Submit

Company

  • Privacy Policy
  • Terms of Service
  • Refund Policy
  • Sitemap

Alternatives

  • Claude Code
  • Jira
  • Notion
  • Slack
  • Linear
  • Wispr Flow
  • All alternatives
© 2026 Open Source Alternatives. All rights reserved.
Open SourceAlternatives
Home/Categories/Developer Tools/OpenPDF
icon of OpenPDF

OpenPDF

Open source alternative to iText 7, Adobe PDF Services API and Foxit PDF Services API

  • 4.4K stars
  • Active this month
  • Last commit 10 days ago

Last verified Oct 19, 2026

Generate and edit PDFs in Java with an open source library for document creation, forms, encryption, and HTML-to-PDF workflows.

Visit websiteGitHub4.4K starsDeploy on Hostinger
OpenPDF preview
TL;DR

OpenPDF is a Java PDF library for creating, editing, rendering, encrypting, and generating PDF documents from code. It replaces proprietary PDF SDKs or restrictive PDF libraries for Java teams that need PDF generation and manipulation under LGPL or MPL licensing.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
who it's for

Who OpenPDF is for#

Java teams generating invoices

Use OpenPDF to create reports, invoices, statements, or certificates directly from server-side Java code.

Skip if:

You need a hosted document generation service with templates managed by non-developers.

Products replacing paid PDF SDKs

Use OpenPDF when PDF creation and manipulation should stay in-process and under open source licensing.

Skip if:

Your workload depends on advanced proprietary SDK features that OpenPDF does not cover.

Developers rendering or encrypting PDFs

Use OpenPDF for document rendering or encryption workflows in Java applications.

Skip if:

You need a GUI tool for manually editing PDF files.

the problem

The problem it solves#

PDF generation becomes expensive when a product depends on proprietary SDK licensing or cloud PDF APIs for server-side document workflows. Java teams often need to create invoices, reports, certificates, and exports directly inside their application. A paid PDF API adds data transfer, vendor terms, and recurring cost to a workflow that can often run inside the app process.

how OpenPDF solves it

How it solves it#

PDF creation and manipulation

OpenPDF supports creating new PDFs and modifying existing documents, including page changes, text, images, graphics, tables, and layout properties.

HTML to PDF module

OpenPDF HTML, a fork of Flying Saucer, generates PDF files from HTML content.

Rendering and encryption support

OpenPDF includes rendering PDFs as images and encrypting documents for security use cases.

Maven dependency workflow

OpenPDF is published as `com.github.librepdf:openpdf`, so Java teams can add it through normal dependency management.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Runs inside Java applicationsOpenPDF lets teams generate and manipulate PDFs in application code instead of sending document data to an external PDF service.
  • Dual LGPL/MPL licensingOpenPDF uses MPL-2.0 or LGPL-2.1+, which gives teams licensing choices that are clearer than proprietary SDK terms.
  • Successor to older iText lineageOpenPDF continues the LGPL/MPL open source iText lineage, which matters for teams replacing older iText-based workflows.

Trade-offs

  • -Java library, not an end-user editorOpenPDF is for developers. Users who need a visual PDF editor should use a desktop tool instead.
  • -License review still mattersLGPL and MPL are more permissive than AGPL for many uses, but teams should review obligations before embedding OpenPDF in commercial software.
tech stack · detected from GitHub

What it's built on#

Languages
JavaKotlin
frequently asked

FAQ#

What is OpenPDF?

OpenPDF is an open source Java library for creating, editing, rendering, encrypting, and generating PDF documents.

What license does OpenPDF use?

OpenPDF uses MPL-2.0 or LGPL-2.1+ licensing.

Can OpenPDF generate PDFs from HTML?

Yes. OpenPDF includes an HTML module for creating PDF files from HTML.

also worth a look

Similar open-source tools#

MuPDF

Alternative toApryse PDF SDK

Fast open source library for rendering and editing PDFs

  • 3,007 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

Apache PDFBox

Alternative toiText 7

Open source Java library for creating and parsing PDFs

  • 3,133 GitHub stars
  • Apache-2.0Licence Apache-2.0

Ghostscript

Alternative toAdobe PDF Services API

Open source PDF and PostScript interpreter and converter

  • 294 GitHub stars

FckSignups

InCustomer Support

Open-source tools that work instantly, no signup required

  • 4,511 GitHub stars
  • GPL-3.0Licence GPL-3.0

Omnara

Featured

Alternative toCClaude Managed Agents

Open-source agent deployment API. Self-host or use Omnara Cloud.

  • 2,957 GitHub stars
  • Apache-2.0Licence Apache-2.0

rakazo

Featured

Alternative toGrok Bot

AI teammates you own: your keys, your model, your machine.

  • 4,904 GitHub stars
  • Apache-2.0Licence Apache-2.0
by category

Open source tools in these categories#

461

Developer Tools

REA (Reverse Engineer Anything), superpowers, Skills for Real Engineers
191

Business & Productivity

OpenClaw, Excalidraw, RustDesk
78

APIs & Integration

n8n, Firecrawl, iptv
Hostinger

Run OpenPDF on your own server

Self-host OpenPDF on a Hostinger VPS.

Deploy on Hostinger

Featured

Inbox Zero

Alternative toSuperhuman

AI email assistant that drafts replies and clears your inbox

  • 12,712 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #Email

Omnara

Alternative toCClaude Managed Agents

Open-source agent deployment API. Self-host or use Omnara Cloud.

  • 2,957 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents

rakazo

Alternative toGrok Bot

AI teammates you own: your keys, your model, your machine.

  • 4,904 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents
Feature your project

New open source projects by email

The projects we add and every new guide. Free, unsubscribe any time.

Find open source alternatives to paid software

/
  • Claude Code to OpenCode
  • Jira to Windshift
  • Notion to AppFlowy
  • Slack to Mattermost
  • Linear to GitLab
  • Wispr Flow to Handy
  • CapCut to Concat
  • Grok Bot to rakazo
  • Superhuman to Inbox Zero
  • Airtable to AITable
  • Muse to OpenClaw
  • GitHub Copilot to Cline
  • Datadog to Netdata
  • Microsoft Teams to Rocket.Chat
  • Pinecone to Qdrant
  • Zapier to n8n
  • Devin AI to OpenHands
  • Firebase to Supabase
  • 1Password to KeePassXC
  • Confluence to Docmost
  • Contentful to Strapi
  • Adobe Premiere Pro to Shotcut
  • ChatGPT to AnythingLLM
  • LangSmith to Langfuse
  • Claude Code to OpenCode
  • Jira to Windshift
  • Notion to AppFlowy
  • Slack to Mattermost
  • Linear to GitLab
  • Wispr Flow to Handy
  • CapCut to Concat
  • Grok Bot to rakazo
  • Superhuman to Inbox Zero
  • Airtable to AITable
  • Muse to OpenClaw
  • GitHub Copilot to Cline
  • Datadog to Netdata
  • Microsoft Teams to Rocket.Chat
  • Pinecone to Qdrant
  • Zapier to n8n
  • Devin AI to OpenHands
  • Firebase to Supabase
  • 1Password to KeePassXC
  • Confluence to Docmost
  • Contentful to Strapi
  • Adobe Premiere Pro to Shotcut
  • ChatGPT to AnythingLLM
  • LangSmith to Langfuse