Delphi-PDF-Bibliothek fuer Erstellung, Bearbeitung, Signatur, Rendering, Preflight und PDF/UA-Workflows

Source-available PDF engine for developer-owned workflows

losLab PDF Library ist ein PDF-SDK fuer Delphi und C++Builder fuer Anwendungen, die PDF-Dokumente in der eigenen Software erstellen, aendern, rendern, drucken, signieren, schuetzen, pruefen und per Preflight kontrollieren muessen.

The library is written in Delphi/Object Pascal and is available with full source for Delphi and C++Builder projects. It also ships DLL, ActiveX, and Dylib options for teams that need to integrate PDF automation from C#, VB.NET, VB6, VBA, ASP/ASP.NET, PHP, PowerBuilder, PowerBASIC, RealBasic, Visual C++, and other environments that can call a DLL or ActiveX component.

Use it when the PDF workflow is part of your product or back-office process: generated invoices, signed contracts, archive submissions, accessibility review, print output, form processing, document assembly, or CI checks that should fail before a bad PDF reaches customers.

PDF Library DEMO-Paket herunterladen (46 MB)

2026-05-26 Version 3.56.37: Versionshinweise | API-Referenz

Wichtigste PDF-Funktionen

• Create and edit PDF pages: draw text, vector graphics, images, QR codes, PDF417, DataMatrix, barcodes, annotations, links, outlines, named destinations, metadata, and document properties.
• Page assembly and document repair: split, merge, append, copy, clone, normalize, move, delete, hide, rotate, and rebuild pages from controlled source documents.
• Render and print: switch between GDI+, PDFium, and Cairo rendering engines for screen preview, bitmap export, device-context rendering, and printer workflows.
• Forms and interactive documents: create, fill, edit, flatten, inspect, and manage AcroForm fields, appearances, field flags, JavaScript actions, attachments, and related document data.
• Text, images, and fonts: work with BMP, TIFF, JPEG, JPEG 2000, GIF, PNG, EMF, HTML text boxes, Unicode text, TrueType, OpenType, Type 1, font embedding, font subsetting, and extraction workflows.
• Security and signatures: encrypt and decrypt PDFs, set permissions, use public-key recipient encryption, sign with selectable SHA-256/384/512 digests, add PAdES attributes, timestamp signatures, and attach DSS/VRI validation data.
• Preflight reports and diagnostics: run PDF/A and PDF/UA-1 checks, generate text, JSON, HTML, or CSV reports, compare stable text reports against baselines, and batch-process folders with summary CSV output.
• Low-level PDF control: access object numbers, page dictionaries, catalog entries, output intents, save-version locks, extension-level gates, tiling patterns, optional content, measurement dictionaries, and direct image insertion when your workflow requires precise PDF structure.

Standard- und complianceorientierte Ausgabe

PDF compliance depends on the source content, fonts, ICC profiles, metadata, tagging, alternate text, signatures, timestamps, and the validator used by your organization. losLab PDF Library provides the controls and diagnostics needed to build standards-oriented PDFs, while leaving final policy validation in your application or QA pipeline.

Workflow	Bibliotheksunterstuetzung	Verantwortung der Anwendung
PDF 1.2-1.7	Creation, editing, strict save-version control, extension-level checks, rendering, printing, forms, annotations, attachments, links, and document structure APIs.	Choose the target PDF version and remove or upgrade features that do not belong in that output profile.
PDF/A	Output-intent controls, XMP metadata helpers, embedded-font workflows, version guards, and built-in PDF/A file checks for archival pipelines.	Provide correct metadata, fonts, color profiles, and business rules for the selected archive policy.
PDF/UA-1	Tagged PDF construction, structure-tree APIs, role-map handling, alternate text, ActualText, reader-side checks, and writer-side GetPDFUADiagnostics feedback.	Author meaningful reading order, language, headings, lists, table semantics, alternate text, and form descriptions.
PAdES	ETSI.CAdES.detached signatures, signing-certificate-v2 data, signature policy and commitment attributes, RFC 3161 timestamp augmentation, SHA-256/384/512 digest choices, and DSS/VRI assembly.	Supply certificates, TSA responses, revocation data, signature policy choices, and verifier-specific acceptance testing.
Preflight automation	CreatePreflightReportEx, SavePreflightReportEx, and the Delphi PreflightReport demo generate text, JSON, HTML, and CSV output for PDF/A and PDF/UA-1 checks.	Decide which report formats, baselines, exit codes, and issue counts should block CI, archive ingestion, or customer delivery.
Sicherheit	AES-128, AES-256, permission handling, password protection, public-key recipient encryption, and encrypted-document inspection for controlled distribution.	Keep passwords, certificates, private keys, and recipient policies under your own security controls.

API-Oberflaechen und Bereitstellungsoptionen

• Delphi XE5 through Delphi 13 and C++Builder XE5 through C++Builder 13.
• Nativer Object-Pascal-Quellcode für die direkte Integration in Delphi und C++Builder, mit API-Referenzseiten für öffentliche TPDFlib-Funktionen.
• DLL and ActiveX access for C#, VB.NET, VB6, VBA, ASP/ASP.NET, PHP, Visual C++, PowerBuilder, PowerBASIC, RealBasic, and compatible tools.
• 32-bit and 64-bit build options where the target IDE and runtime support them.
• macOS Dylib option for teams that need cross-platform PDF automation around the same library family.
• Standalone demo projects for PDF creation, page operations, image and font handling, forms, encryption, signing, rendering, printing, and preflight report automation.

Enthaltene Demos und Validierungsabdeckung

The package includes Delphi and C++Builder demos for common integration tasks, plus command-line examples where automation matters more than a visual UI.

• Creation and layout: HelloWorld, AddTextImage, CreateTable, DrawWrappedText, TextPaging, AddFormattedTitle, HTML text, barcode, QR code, and image-to-PDF workflows.
• Document operations: CopyPageRanges, PageOperations, ExtractText, ExtractImage, ExtractEmbeddedFonts, ExtractAnnotAttach, DirectAccess, and merge/split style processing.
• Rendering and printing: PdfToImage, MultiFunction renderer selection, PrintPDF, GDI+, PDFium, and Cairo output paths.
• Security and signatures: PdfEncrypt, PdfDecrypt, PdfPermission, PdfSigning, PAdES attribute workflows, DSS/VRI helpers, and timestamp-oriented signing paths.
• Preflight automation: The Delphi PreflightReport demo validates single files or folders, writes text/JSON/HTML/CSV reports, emits preflight-summary.csv, and returns automation-friendly exit codes.

Recent automated coverage includes Delphi DUnitX and C++Builder GoogleTest suites for document creation, compression, images, fonts, forms, security, signing, printing, PDF version compliance, PDF/UA diagnostics, and preflight report generation and comparison.

Wann losLab PDF Library geeignet ist

• Choose it when your application must create, modify, sign, validate, and deliver PDFs, not only display them.
• Choose it when your Delphi or C++Builder team needs source-level control, internal diagnostics, and long-term maintainability.
• Wählen Sie diese Bibliothek, wenn Ihr Workflow Rendering, Druck, Formulare, Signaturen, Verschlüsselung, PDF/A, PDF/UA, PAdES und Preflight-Berichte in einem Toolkit kombiniert.
• Choose it when CI, archive handoff, accessibility review, or regulated delivery needs stable report files instead of a manual viewer-only check.
• Choose PDFium Component when you only need a focused PDF viewer or renderer, and choose HotPDF when your project needs a lighter PDF creation component.

Lizenzierung

Pay with credit/debit cards, PayPal, AliPay, or wire transfer through FastSpring:
Full source licenses include one year of updates:
PDFlibPas Single License / one developer ($899)
PDFlibPas Team/SME License / up to 5 developers ($1799)
PDFlibPas Enterprise License / unlimited developers ($3599)

Jaehrliche Verlaengerung kaufen (40% of the first-time purchase).