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losLab PDF Library Coupons & Pricing
losLab PDF Library Single License
1 developer. Full Object Pascal source for Delphi, C++Builder and Lazarus, royalty-free deployment, 1 year of updates and email support.
losLab PDF Library Small Business
Up to 5 developers in one company. Full source plus document comparison, e-invoice rule validation, Bates numbering and PDF/VCR data merge.
losLab PDF Library Enterprise
Every developer in one company, no headcount cap. The complete edition: PDF/A and PDF/UA validation, PAdES long-term signatures, HSM and cloud signing, secure redaction, priority support.
How to Use the Delphi PDF Library Coupon Code
Open losLab’s purchase page through the button above and choose your tier row.
Paste the discount code into the coupon field and check the total. A Single source license should drop to $637.50 before tax.
Pay by card, PayPal or wire transfer. The download link for a first order arrives right after payment.
How Well Does losLab PDF Library Work?
For a Delphi shop, the source is the headline benefit. When a client’s PDF breaks rendering, you can step into the engine yourself instead of filing a ticket and waiting a week. The switchable renderer helps here too, because GDI+, PDFium and Cairo each trip over different edge cases, and having all three behind one API is unusually practical.
I also like that the changelog publishes dated before/after timings for large-file work, and that the demo package ships a separate lab for each area, so you can judge behaviour on your own files. The catch is how the features are split across tiers. A lot of what the product page leads with (PDF/A and PDF/UA validation, preflight reports, long-term PAdES signatures, redaction) only ships with Enterprise. A losLab PDF Library Single license is a strong creation and editing engine, not the compliance suite the headline implies. Budget learning time as well: the API reference indexes more than 3,200 topics.
Key features
- One API across Delphi, C++Builder and Lazarus, or through DLL and ActiveX from C#, VB.NET, VBA, PHP and Visual C++.
- Opens PDFs larger than 2 GB on demand, and merges file lists in a single pass while keeping bookmarks, form fields and tags.
- Pulls text out in reading order to DOCX, JSON, CSV or Markdown, with table detection and exact Unicode text replacement.
- Signs with SHA-256/384/512 digests and PAdES attributes, including Ed25519, Ed448, SM2 and post-quantum ML-DSA keys.
- Encrypts multi-gigabyte files file to file with AES-256 and hardware AES-NI acceleration on Windows.
What we liked, what we didn’t
Which losLab PDF Library Plan Should You Buy?
| Plan | Price with WINPC | Developers | Source code | Extra features | Best for |
|---|---|---|---|---|---|
| Single | $637.50 | 1 | Yes | Core feature set | Solo dev who uses Lazarus or wants source access |
| Small Business | $1,912.50 | Up to 5 | Yes | + Comparison, e-invoice rules, Bates, PDF/VCR | Small team that needs source |
| Enterprise | $6,375 | Unlimited (one company) | Yes, plus test suites on request | Every feature + priority support | Regulated, archival or signing pipelines |
Frequently Asked Questions
Can I get a refund on losLab PDF Library?
No. Because the package includes source code, losLab treats all sales as final. Download the free demo package and run it on your real documents before buying.
Is it a one-time purchase or a subscription?
It’s a one-time purchase. You keep using the version you bought forever, and the price includes one year of updates and email support.
Can I use it from C# or VB.NET?
Yes. The DLL and ActiveX builds work from C#, VB.NET, VB6, VBA, ASP/ASP.NET, PHP, PowerBuilder, Visual C++ and anything else that can call a DLL or ActiveX component.
Which Delphi and C++Builder versions are supported?
Delphi and C++Builder XE5 through 13, plus Free Pascal 3.2.2 and 3.3.1 with Lazarus. Native Windows ARM64 needs FPC 3.3.1, and Delphi ARM64EC builds are supported too.
Requirements & Supported Formats
| Field | Value |
|---|---|
| Operating system | Windows x86, x64 and ARM64; headless builds for Linux and macOS on x64 and ARM64 (incl. Delphi Linux64 target) |
| IDE / compiler | Delphi and C++Builder XE5 to 13; Free Pascal 3.2.2 / 3.3.1 with Lazarus; Delphi ARM64EC |
| Other languages | DLL / ActiveX for C#, VB.NET, VB6, VBA, ASP/ASP.NET, PHP, PowerBuilder, PowerBASIC, RealBasic, Visual C++; macOS Dylib |
| Processor / RAM / disk | Not specified |
| Supported input formats | PDF (including files over 2 GB); images: BMP, TIFF/BigTIFF, JPEG, JPEG 2000, GIF, PNG, EMF, SVG; HTML and Markdown text; fonts: TrueType, OpenType, Type 1; e-invoice XML (ZUGFeRD, Factur-X, XRechnung, Peppol) |
| Supported output formats | PDF, PDF/A, PDF/X-1a/3/4/6, PDF/E-1, PDF/R, tagged PDF/UA, PDF/VT-3; text extraction to DOCX, JSON, CSV, Markdown; rendering to bitmaps, metafiles, device contexts and printers; preflight reports in text, JSON, HTML, CSV (Enterprise) |
| Other requirements | Rendering, codecs, cryptography and XML validators have platform-specific provider requirements; OCR uses optional Tesseract adapters; invoice validation uses xmllint or SaxonJ |
