PDF/A, PDF/X, and PDF/UA Output in Delphi: HotPDF Guide
Generate PDF/A, PDF/X, and PDF/UA compliant files from Delphi with HotPDF: output intents, tagged structure, ICC profiles, and veraPDF verification steps.
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Browse PDF, Delphi, and document software engineering notes from losLab.
Arabic and RTL Text Shaping in Delphi PDFs with HotPDF
Render Arabic and Hebrew text correctly in Delphi PDFs with HotPDF: RtLTextOut, charset values, Unicode font embedding, and right-to-left reading order.
Processing Large PDFs in Delphi: HotPDF Direct File API
Process huge PDFs in Delphi without loading them into memory: HotPDF Direct File API handles, encrypted copy, page counts, and incremental updates.
AES-256 PDF Encryption in Delphi: HotPDF Setup and Pitfalls
Set up AES-256 PDF encryption in Delphi with HotPDF: user and owner passwords, permission flags, R5 vs R6 revisions, and the property order that silently fails.
XFA to AcroForm Flattening in Delphi Using HotPDF
Convert dynamic XFA forms to native AcroForm in Delphi with HotPDF FlattenLoadedXFA, review flatten warnings, and handle archival and PDF/A limits.
Automating PDF Preflight Checks in Delphi with HotPDF
Build an automated PDF preflight gate in Delphi: generate standards-clean files with HotPDF, then verify them with veraPDF and Acrobat before release.
PDF Digital Signatures and PAdES in Delphi with HotPDF
Sign PDFs in Delphi with HotPDF: PFX one-call signing, ByteRange reservation for external signers, PAdES baseline fields, and document timestamps.
Building AcroForm Fields and Actions with HotPDF in Delphi
Create AcroForm text fields, checkboxes, radio groups, and submit or JavaScript actions in Delphi with HotPDF, and avoid export-value mismatches in form intake.
Delphi PDF Reports with HotPDF: TextOut, Fonts, Images
Practical HotPDF guide to Delphi PDF reports: TextOut coordinates, Unicode font embedding, JPEG and PNG image placement, and drawing primitives that scale.
Object Streams and Incremental Updates in Delphi with HotPDF
Cut Delphi PDF size with object streams and xref streams, then append changes as incremental updates with HotPDF while keeping earlier revisions intact.
Generate Excel Files in Delphi Without Office Automation
Build XLS and XLSX workbooks from Delphi services without installing Excel: native BIFF and OOXML writers, stream output to HTTP responses, COM-free.
HotXLS Formula Engine and Custom Functions in Delphi
Evaluate Excel formulas in Delphi with HotXLS: the Calculate engine, OnUserFunction custom functions, array formulas, and why CSV export needs computed values.
Open and Save ODS Files in Delphi with HotXLS
HotXLS opens and saves OpenDocument Spreadsheet files from Delphi: SaveAsODS export options, the lightweight ODS import path, and what survives a round trip.
HotXLS Conditional Formatting and Rich Text in Delphi
Apply cellIs rules, data bars, icon sets, and rich text runs from Delphi with HotXLS, avoiding the dxf style and font pool index traps in XLSX files.
HotXLS Charts and Images: Excel Drawings in Delphi
How to add Excel charts, images, and shapes from Delphi with HotXLS: chart sheets in XLS, embedded charts and pictures in XLSX, EMU sizing, and anchor traps.
Template-Based Excel Report Generation in Delphi with HotXLS
Fill Excel report templates from Delphi with HotXLS: locate placeholders with FindText, clone detail rows, insert rows safely, and recalculate before saving.
HotXLS: Workbook Audit and Format Conversion in Delphi
Audit unknown Excel files from Delphi with HotXLS: count charts, formulas, macros, and protection, then convert XLS, XLSX, and ODS with known fidelity limits.
Exporting Delphi Datasets to Excel Reports with HotXLS
Export TDataset results to Excel from Delphi with HotXLS: TDataToXLS grouping and paging, the VCL dependency trap, XLSX conversion, and a service-safe loop.
HotXLS: Sheet Protection, Page Setup, and Printing in Delphi
Protect worksheets, keep input ranges editable, and control print layout in Delphi with HotXLS: Locked flags, page setup, scaling, and header codes.
Large Excel Workbook Performance in Delphi with HotXLS
Practical HotXLS performance tuning for large Excel files in Delphi: StreamingWrite saves, style pool reuse, row callbacks, and faster read-only loads.
Export Excel to CSV, TSV, and HTML in Delphi (HotXLS)
Export Excel sheets to CSV, TSV, and HTML from Delphi with HotXLS. Covers RFC 4180 quoting, UTF-8 BOM, and why formulas need Calculate before export.
Defined Names and Cross-Sheet Formulas in Delphi (HotXLS)
Create workbook-scoped and sheet-scoped defined names with HotXLS in Delphi, write cross-sheet formulas that survive edits, and avoid _xlnm name conflicts.
HotXLS Data Validation, AutoFilter and Tables in Delphi
Add dropdown validation, AutoFilter criteria, and Excel tables from Delphi with HotXLS, including server-side filter preview and the 0-based column ID trap.
Excel Comments and Hyperlinks in Delphi with HotXLS
Write cell comments with authors, external URLs, and in-workbook links from Delphi using HotXLS, including the XLSX internal-link API and XLS comment quirks.
HotXLS Merged Cells and Report Template Layout in Delphi
How HotXLS handles merged cells in Delphi report templates: anchor-cell semantics, InsertRows shifting rules, merge audits, and HTML and RTF export behavior.
HotXLS: Preserve VBA Macros and External Links in Delphi
How HotXLS preserves VBA projects and external links when Delphi code edits XLS and XLSX workbooks: macro-enabled saves, link targets, and round-trip limits.
HotXLS Streaming Writes for Delphi Server Batch Jobs
Keep large XLSX exports inside memory limits with HotXLS StreamingWrite, row-level write callbacks, style pool reuse, and per-thread batch workbook jobs.
Setting Excel Document Properties in Delphi with HotXLS
Set and read Excel document properties from Delphi with HotXLS: title, author, company, and keywords across BIFF SummaryInformation and OOXML docProps parts.
List Sheet Names Fast in Delphi with HotXLS GetSheetNames
Read worksheet names from XLS, XLSX, and ODS files in Delphi without loading cell data: HotXLS GetSheetNames, encrypted-file detection, intake triage.
Encrypt XLSX Files with AES in Delphi using HotXLS
Write AES-encrypted XLSX files from Delphi with HotXLS SaveAsEncrypted: ECMA-376 Standard Encryption, password handling, and the write-only decryption limit.
Build an Accessible PDF Reader in Delphi with PDFium
Make a Delphi PDF viewer work with screen readers: tagged reading order extraction, word-level TTS highlighting, and honest fallbacks for untagged PDFs.
Word-by-Word TTS Highlighting in Delphi PDFium Viewers
Sync text-to-speech with on-page word highlights in Delphi using PDFium word boxes: TrackReadingWordAt, render ordering, auto-scroll, and Unicode pitfalls
Low-Vision PDF Color Filters in Delphi with PDFium
Add dark mode and low-vision reading modes to a Delphi PDF viewer: post-render inversion, two kinds of grayscale, and overlay colors that stay visible.
Batch PDF Preflight Reports in Delphi: PDFium Component CLI
Automate PDF/A and PDF/UA preflight in Delphi with PDFium Component: batch loops, JSON and CSV reports, exit codes, and the 0-based page number trap
Build a PDF Intake Review Workbench in Delphi with PDFium
Triage incoming PDFs in Delphi with PDFium Component: check Info dictionary and XMP metadata, spot encryption, JavaScript, and XFA, and route risky files early
Delphi PDF Annotation Review with PDFium Component
Build a PDF annotation review panel in Delphi: index markup by page, survive appearance-stream vetoes, and recolor or delete annotations without ghosts.
PDF Form Field Navigation in Delphi (PDFium Component)
Why filled PDF forms look blank in Acrobat and how to fix it: FormFill setup, keyboard field traversal, and GenerateFormAppearances in Delphi viewers.
PDFium Delphi Viewer: Render Cache and Smooth Zoom Tactics
Keep zoom and scrolling smooth in Delphi PDF viewers with PDFium: correct cache keys, bitmap ownership, progressive rendering, and high-DPI memory budgets
Secure PDF Preview in Delphi Apps with PDFium Component
Harden a Delphi PDF preview pane with PDFium Component: disable JavaScript at load, intercept link clicks, filter attachments, and read encryption permissions
PDF Viewer for Lazarus and Free Pascal with PDFium
Port a Delphi PDF viewer to Lazarus and Free Pascal: string encoding traps, runtime form construction, PDFium binary loading, and TTS beyond Windows.
Multi-Engine PDF Rendering in Delphi: PDFlibPas Guide
Switch between built-in, Cairo, and PDFium renderers per file in PDFlibPas: runtime engine probes, DPI scaling traps, and a fallback chain that logs itself.
PAdES Digital Signatures in Delphi with PDFlibPas
Produce PAdES-B-B, B-T, and B-LT signatures in Delphi with PDFlibPas: timestamp reservations, DSS assembly, and ByteRange audits before trusting signed files.
PDF/A and PDF/UA Preflight in Delphi with PDFlibPas
Run built-in PDF/A and PDF/UA preflight from Delphi with PDFlibPas: structured findings, diffable reports, save-time fixups, and veraPDF cross-checks.
Merge and Split Gigabyte PDFs in Delphi with PDFlibPas
Open gigabyte PDFs in milliseconds with PDFlibPas direct access: page handles, streaming merge lists, range extraction, and xref repair for damaged files.
PDFlibPas DLL, ActiveX, dylib Bindings Beyond Delphi
How PDFlibPas exposes one flat PDF API as a Stdcall DLL, Safecall ActiveX object, and Cdecl dylib, and the string and handle traps each binding hides.
Delphi PDF Text, Image, and Font Extraction with PDFlibPas
Extract positioned text, original image streams, and font metadata from PDFs in Delphi with PDFlibPas, plus extraction options that fit search and audit jobs.
Audit PDF Encryption and Permissions in Delphi: PDFlibPas
Read the PDF /Encrypt dictionary like an auditor: PDFlibPas calls for algorithm, key length, AES-256 R5 vs R6, permission bits, and Identity filter traps.
PDFlibPas Print Preview and Device-Context Output in Delphi
Delphi print preview that matches the printed page: device-context rendering, virtual printers, scaling, and DevMode persistence with PDFlibPas.
Tagged PDF Structure Trees in Delphi with PDFlibPas
Generate tagged PDFs from Delphi with PDFlibPas: structure trees while drawing, table header semantics, artifacts, and PDF/UA diagnostics before saving.
PDFlibPas Compliance and Signing Workbench in Delphi
Wire PDF/A preflight, PAdES signing, and ByteRange audits into one Delphi workbench with PDFlibPas so the revision you validate is the revision you sign.
Using PDFium VCL in Delphi for side-by-side comparison of PDF documents
Using PDFium VCL in Delphi for side-by-side comparison of PDF documents. Comparing multiple PDF documents side by side is essential for revision review,
Analyzing PDF Font Properties with PDFium VCL in Delphi
Analyzing PDF Font Properties with PDFium VCL in Delphi. Understanding the fonts used in a PDF document is essential for quality control, accessibility
Working with PDF Attachments in Delphi using PDFium Component
Working with PDF Attachments in Delphi using PDFium Component. PDF documents can contain embedded file attachments—a powerful feature for bundling related
Printing PDF Documents with PDFium VCL in Delphi
Printing PDF Documents with PDFium VCL in Delphi. Printing PDF documents with accurate rendering and proper scaling is a common requirement.
Creating PDF Documents from Scratch with PDFium VCL in Delphi
Creating PDF Documents from Scratch with PDFium VCL in Delphi. While PDFium is primarily known for PDF viewing and manipulation, PDFium VCL also provides
Converting PDF Pages to JPEG Images with PDFium VCL in Delphi
Converting PDF Pages to JPEG Images with PDFium VCL in Delphi. Converting PDF pages to images is essential for thumbnails, previews, and web display.
Splitting PDF Documents into Multiple Files with PDFium Delphi
Splitting PDF Documents into Multiple Files with PDFium Delphi. Splitting a large PDF into smaller files is essential for document distribution, archiving,
Merging Multiple PDF Files into One Document with PDFium VCL
Merging Multiple PDF Files into One Document with PDFium VCL. Combining multiple PDF documents into a single file is a common requirement in document
Converting Images to PDF Documents with PDFium VCL in Delphi
Converting Images to PDF Documents with PDFium VCL in Delphi. Converting images to PDF is a common requirement for document management, archiving, and
Extracting Images from PDF Documents with PDFium VCL in Delphi
Extracting Images from PDF Documents with PDFium VCL in Delphi. PDF documents often contain valuable images—photographs, diagrams, charts, and graphics.
Extracting Text from PDF Documents with PDFium VCL in Delphi
Extracting Text from PDF Documents with PDFium VCL in Delphi. Text extraction is one of the most common PDF processing tasks.
Creating a Multi-Page PDF Viewer with Continuous Scrolling in Delphi
Creating a Multi-Page PDF Viewer with Continuous Scrolling in Delphi. This tutorial explores the Multi-Page Viewer demo, which extends the basic PDF viewer
Building a Feature-Rich PDF Viewer with PDFium VCL in Delphi
Building a Feature-Rich PDF Viewer with PDFium VCL in Delphi. In this tutorial, we’ll explore how to create a professional PDF viewer application using
RtLTextOut Function in HotPDF Component
RtLTextOut Function in HotPDF Component. Right-to-Left Text in PDF Generation: Introducing HotPDF’s RtLTextOut Function Introduction to Right-to-Left
Fix the HotPDF component reuse issue
Fix the HotPDF component reuse issue. Object Instance State Management and File Conflict Resolution Discover how to solve the “Please load the document
PDF Fast Web View Optimization: Explanation & Tips of PDF Linearization
PDF Fast Web View Optimization: Explanation & Tips of PDF Linearization. PDF Fast Web View: Linearization Optimization Guides Have you ever encountered
Master PDF Structure: XML Metadata, Bookmarks & Annotations
Master PDF Structure: XML Metadata, Bookmarks & Annotations. Understanding PDF XML Metadata and Bookmarks: A Technical Guide Key Topics Covered 📍
PDF Text and Font Handling with Code Examples and Best Practices
PDF Text and Font Handling with Code Examples and Best Practices. Mastering PDF Text and Fonts: A Developer’s Guide PDF documents have revolutionized how
PDF Graphics Explained: Understanding PDF Visual Elements
PDF Graphics Explained: Understanding PDF Visual Elements. PDF Graphics: From Basic Paths to Advanced Visual Effects Discover the fascinating world of PDF
In-depth exploration of PDF document structure
In-depth exploration of PDF document structure. Understanding the Inner Structure of PDF Welcome to the fascinating world of PDF internals!
Understanding PDF File Structure: A Technical Overview
Understanding PDF File Structure: A Technical Overview. Inside PDF Files: A Complete Structural Breakdown The Portable Document Format (PDF) has become the
Building a Simple PDF Document from Scratch
Building a Simple PDF Document from Scratch. Building a PDF Document using Notepad Master the art of creating PDF files manually and understand the
Understanding PDF: The Universal Document Format
Understanding PDF: The Universal Document Format. PDF – The Document Format That Changed Everything Every day, millions of people open PDF files without
Optimizing PDF Processing Performance: From Minutes to Seconds
Optimizing PDF Processing Performance: From Minutes to Seconds. From Minutes to Seconds in PDF Handling Applications PDF processing performance can make or
Decoding Non-Standard PDF Structures – PDF without Pages dictionary
Decoding Non-Standard PDF Structures – PDF without Pages dictionary. PDF Format Variations and Processing Challenges PDF files are everywhere in our
Understanding PDF Page Ordering – Why Your PDF Pages Aren’t There
Understanding PDF Page Ordering – Why Your PDF Pages Aren’t There. The Hidden Complexity Behind PDF Structure PDF documents are far more sophisticated than
Debugging Range Check Errors in Delphi PDF Libraries
Debugging Range Check Errors in Delphi PDF Libraries. When working with PDF manipulation libraries in Delphi , range check errors can be particularly
Understanding PDF Page Trees: Why Page Order Matters
Understanding PDF Page Trees: Why Page Order Matters. PDF documents might look simple on the surface, but their internal structure can be surprisingly
Debugging PDF Page Order Issues: A Real Case Study
Debugging PDF Page Order Issues: A Real Case Study. Debugging PDF Page Order Issues: HotPDF Component Real Case Study Published by losLab | PDF Development
losLab PDF Library: A Comprehensive Feature Guide
Unleashing the Power of losLab PDF Library: A Comprehensive Feature Guide losLab PDF Library is a robust PDF Software Development Kit (SDK) that provides
Transforming RTF Files into PDF: A Guide for Developers
Transforming RTF Files into PDF: A Guide for Developers. Transforming RTF Files into PDF: A Guide for Delphi, C# & VB.
Scaling PDF Pages by 70% using losLab PDF Library, in Delphi, C# & VB.Net
Scaling PDF Pages by 70% using losLab PDF Library, in Delphi, C# & VB.Net. When working with PDFs, there are often requirements to scale the content for
Alcinoe with Delphi 11.1 Alexandria supporting
Alcinoe with Delphi 11.1 Alexandria supporting. Alcinoe Component Library by Zeus64 is an open source of visual and non-visual components library for
PDF electronic signature workflow with DigiSigner
A practical review of PDF electronic signature workflow, DigiSigner features, security checks, audit trails, and what to evaluate before online signing.
Set TDateTimePicker format in Delphi 5
Use DateTime_SetFormat in Delphi 5 when TDateTimePicker.Format is unavailable, and keep newer Delphi versions on the direct Format property.
Port Delphi _ftol inline assembly to 64-bit builds
Why Delphi 64-bit builds reject inline asm for _ftol, when to prefer Trunc, and how to avoid porting fragile 32-bit assembly into DCC64.
Fix Delphi E2010 tagLOGBRUSH and tagLOGBRUSH32 incompatible types
Fix Delphi E2010 incompatible types between tagLOGBRUSH and tagLOGBRUSH32 by copying EMR brush fields into TLogBrush before calling CreateBrushIndirect.
Create and free a HotPDF component dynamically in C++Builder
Create and free a HotPDF component instance dynamically in C++Builder, with ownership, exception safety, include paths, and PDF generation checks.
HotPDF Canvas Draw
Use HotPDF Canvas drawing in Delphi to create vector-style PDF output, with guidance on coordinates, colors, deterministic rendering, and validation.
HotPDF Table To PDF
Convert Delphi dataset rows to paginated PDF tables with HotPDF, including page headers, row rendering, column sizing, and production report checks.
HotPDF Chart Sample
Learn how a Delphi TeeChart report can be exported with HotPDF, including canvas rendering, page layout, scaling, and production checks for PDF charts.
Comprehensive Guide to PDF Barcode Generation
Comprehensive Guide to PDF Barcode Generation. Implementing 22 Barcode Types with HotPDF Delphi Component In today’s digital world, barcodes serve as the
Add clickable hyperlinks to PDF files with HotPDF
A practical HotPDF Delphi hyperlink example showing clickable PDF links, URL targets, annotation placement, validation checks, and viewer compatibility tips.
Mastering PDF Annotations with HotPDF Delphi Component
Mastering PDF Annotations with HotPDF Delphi Component. Mastering PDF Annotations with HotPDF Component PDF annotations are one of the most powerful
HotPDF Component Vertical Text Sample Project
HotPDF Component Vertical Text Sample Project. HotPDF Delphi Component: Creating Vertical Text Layouts in PDF Documents This comprehensive guide
HotPDF Component Delphi TextOut Sample Project
Explore HotPDF TextOut in Delphi, including fonts, character sets, spacing, rendering modes, searchable text, and production text-layout checks.
Delphi HotPDF Component Hello World Sample
Delphi HotPDF Component Hello World Sample. Hello World from Delphi HotPDF Component Welcome to the comprehensive guide for the Delphi HotPDF Component