Knowledge Base – Qoppa Java PDF API SDK & Server Products

FAQ

• Send us Feedback about PDF Automation Server and our PDF Libraries & Components
• Leave Feedback & Reviews for PDF Automation Server and our PDF Libraries
• Upgrade library to the latest version on existing servers
• Upgrading from jWordConvert to jOfficeConvert
• How to follow Qoppa and stay updated about latest product releases

Java PDF Library [Deriving from jPDFProcess]

• jPDF Library Release History

• jPDFAssemble: Merge PDFs, Split PDFs

• jPDFFields: Import, Export Form Fields

• jPDFImages: Convert PDF To From Images

• jPDFPrint: Print PDFs

• jPDFProcess: Create/Manipulate PDFs

• jPDFSecure: Secure / Sign PDFs

• jPDFText: Extract Text From PDFs

• CVE-2021-44228 – Apache Log4j Vulnerability
• CMaps packaged within Qoppa PDF library and cmaps.jar
• Multiple types of permissions in a PDF document

Java PDF Library [Other]

• jPDFOptimizer: Optimize PDFs, Reduce PDF Files Size

• jPDFPreflight: Validate Convert PDF/A, PDF/X

• jOfficeConvert: Convert MS Word To PDF, Convert Excel to PDF

• jPDFWeb: Convert PDF To HTML5

• FREE jPDFWriter: Write / Create PDFs

• CVE-2021-44228 – Apache Log4j Vulnerability

Java PDF Visual Component

• jPDF Component Release History

• jPDFNotes: PDF Annotating Component

• jPDFEditor: PDF Editing Component

• jPDFViewer: PDF Viewing Component

• CVE-2021-44228 – Apache Log4j Vulnerability
• CMaps packaged within Qoppa PDF library and cmaps.jar
• Multiple types of permissions in a PDF document

PDF Automation Server

• Workflow Nodes

• PAS Release History

• Web PDF Viewer & Markup

• Mule ESB

• Custom PDF Jobs

• Rest API

• CVE-2021-44228 – Apache Log4j Vulnerability
• Can a digital signature in a PDF document have multiple linked widgets?
• PDF Automation Server: PDF converted from Word/Excel on Linux contains invalid characters
• PDF Automation Server & Java Version
• Find what port QoppaPAS is listening to

Android PDF Toolkit - qPDF

• qPDF Toolkit Release History

• Which hash algorithm is used when applying digital signatures
• Find the first Goto page action bookmark in a PDF and go to that page
• Setting View Mode for Android PDF Viewer QPDFViewerView
• Different options to render and markup PDFs on Android and iOS
• Extract Text from a PDF using Android Java

Evaluation

• How to locate the error log file for Qoppa’s sample applications
• I need to use 2 Qoppa libraries / jar files in the same classpath and getting an exception

Fonts

• How to Resolve Error Rendering Page: Missing Font
• True Type Font Instructions used in CJK Fonts
• CJK Substitute Fonts on Windows, Mac and Linux
• Referenced CJK fonts in a PDF
• Finding and installing CJK fonts on Linux

Integration

• Maven dependency for Qoppa Java PDF SDK API 2021R1
• Maven dependency for Qoppa Java PDF SDK API 2020R2
• Comparing Tesseract versions 3.02 and 3.05 for accuracy & performance
• Third Party Libraries / Jars: Info and Download Links
• Invalid SH-256 signature file digest when jar is signed

Licensing

• Upgrade library to the latest version on existing servers
• Upgrading from jWordConvert to jOfficeConvert
• Validate keys and get server information for combined jars
• How to register PDF Automation Server
• Will Qoppa agree to review and sign our company’s custom license agreement?

General

• Maven dependency for Qoppa Java PDF SDK API 2021R1
• Send us Feedback about PDF Automation Server and our PDF Libraries & Components
• Leave Feedback & Reviews for PDF Automation Server and our PDF Libraries
• Maven dependency for Qoppa Java PDF SDK API 2020R2
• How can I add Qoppa Java PDF API as a Maven dependency?

Webstart Applications / Applets - Render, Print, Manipulate PDFs

• Webstart App or applet blocked by Java Security due to expired certificate though the certificate was valid when the jar was created
• What cipher suite is your Java applet using during connection
• How can I remove a signature from a signed jar file / How can I unsign a jar?
• How to view the HTML source code of an applet
• Are Firefox, Google Chrome Right to Block Java Plugin?

Videos

• Videos

Java

• Missing / blank page content when printing from Java to specific printer drivers
• Java OutputStreamWriter is returning “UTF8” instead of “UTF-8”
• Java 1.6 Update 45 is Sooo Buggy

Developer Newsletter

• Newsletters

Command Line Tools

• Command Line Word to PDF Conversion & Excel to PDF Conversion on Windows or Linux
• Print PDF documents in SAP server withour user interaction
• Command Line Tools

Qoppa News

• CVE-2021-44228 – Apache Log4j Vulnerability
• Convert Microsoft Excel to Adobe PDF in Java
• Qoppa mentioned in 2014 SDTimes PDF Component Buyer’s Guide
• Qoppa has the best Java PDF library and visual component

Archive

• How can I remove a signature from a signed jar file / How can I unsign a jar?
• Adobe Reader DC displays weird characters for embedded fonts when zooming
• How to resolve Firefox “Java Plugin has Crashed” Error when running applets
• Applets: IE11 not seeing the latest version of Java and redirecting to Oracle
• How to Resolve Applet ClassNotFoundException – Handshake Failure – HTTPS – New Issue with Java 8 Latest Build

Uncategorized

• Video: Introduction to PDF Automation Server
• How to check that a PDF document is linearized or formatted for fast web view
• Is Qoppa PDF SDK thread safe and is it multi-threaded?
• How to Convert PDF Portfolio to Images
• Leave feedback or review for Qoppa’s products