Hisui PDF - Third-Party Notices ================================ Hisui PDF is licensed under the MIT License (see the LICENSE file). This file lists the third-party components distributed with Hisui PDF and the licenses under which they are provided. Each component is the property of its respective copyright holders. -------------------------------------------------------------------------------- Components -------------------------------------------------------------------------------- 1. PDFsharp 6.2.4 License : MIT Copyright: (c) 2026 empira (PDFsharp Team) Project : https://docs.pdfsharp.net/ 2. PdfPig 0.1.16 License : Apache-2.0 Copyright: (c) UglyToad and the PdfPig contributors Project : https://github.com/UglyToad/PdfPig 3. PDFtoImage 5.4.0 License : MIT Copyright: (c) David Sungaila Project : https://github.com/sungaila/PDFtoImage 4. SkiaSharp 4.150.1 (incl. SkiaSharp.NativeAssets.Win32 / macOS / Linux.NoDependencies) License : MIT (managed binding) Copyright: (c) Microsoft Corporation. All rights reserved. Project : https://github.com/mono/SkiaSharp Note : Bundles the native Skia graphics library by Google LLC, which is licensed under the BSD-3-Clause License (see below). 5. PDFium (native binaries) bblanchon.PDFium.Win32 / Linux / macOS 152.0.7961 License : Apache-2.0 (binary packaging) Copyright: (c) Benoit Blanchon 2017-2025 Project : https://github.com/bblanchon/pdfium-binaries Note : Ships Google's PDFium library, which is licensed under the BSD-3-Clause License (Copyright 2014 The PDFium Authors). 6. CommunityToolkit.Mvvm 8.4.2 License : MIT Copyright: (c) .NET Foundation and Contributors. All rights reserved. Project : https://github.com/CommunityToolkit/dotnet 7. Microsoft.Extensions.* 10.0.12 (Hosting, DependencyInjection.Abstractions, Logging.Abstractions, Logging.Debug) License : MIT Copyright: (c) Microsoft Corporation. All rights reserved. Project : https://dot.net/ 8. Avalonia 12.1.4 (incl. Avalonia.Desktop, Avalonia.Themes.Fluent) License : MIT Copyright: Copyright 2013-2024 (c) The AvaloniaUI Project Project : https://avaloniaui.net/ 9. Inter (font), bundled via Avalonia.Fonts.Inter 12.1.4 License : SIL Open Font License 1.1 (OFL-1.1) Copyright: (c) The Inter Project Authors (https://github.com/rsms/inter) Project : https://rsms.me/inter/ Note : The Avalonia.Fonts.Inter package code is MIT ((c) The AvaloniaUI Project); the embedded Inter font itself is licensed OFL-1.1. "Inter" is a Reserved Font Name under the OFL. 10. Tesseract 5.2.0 (.NET wrapper for the Tesseract OCR engine) License : Apache-2.0 (managed binding) Copyright: (c) Charles Weld and the Tesseract .NET contributors Project : https://github.com/charlesw/tesseract Note : Used for OCR of scanned PDFs. Bundles the native Tesseract OCR engine (Copyright (c) Google Inc.; Apache-2.0) and uses the Leptonica image library (Copyright (c) Dan Bloomberg), which is licensed under the BSD-2-Clause License. On Linux/macOS the native libtesseract/libleptonica libraries are provided by the system. 11. Tesseract trained language models — English and Italian ("fast" variants) License : Apache-2.0 Copyright: (c) Google Inc. Project : https://github.com/tesseract-ocr/tessdata_fast Note : The 'eng.traineddata' / 'ita.traineddata' files bundled in the 'tessdata' folder next to the executable, used by the OCR feature. 12. DocumentFormat.OpenXml 3.3.0 License : MIT Copyright: (c) Microsoft Corporation Project : https://github.com/dotnet/Open-XML-SDK Note : Writes the .docx file for the PDF-to-Word export. 13. Liberation Sans 2.1.5 (font: Regular, Bold, Italic, Bold Italic) License : SIL Open Font License 1.1 (OFL-1.1) Copyright: Digitized data (c) 2010 Google Corporation (Reserved Font Arimo); (c) 2012 Red Hat, Inc. (Reserved Font Name Liberation) Project : https://github.com/liberationfonts/liberation-fonts Note : Embedded in Hisui.Pdf.Core and used (instead of any system font) for the text Hisui PDF writes into documents: annotations, edited text, form field values, headers/footers, signature blocks. Only the glyphs used are embedded in the PDF. Metric-compatible with Arial. Unmodified font files. -------------------------------------------------------------------------------- License texts -------------------------------------------------------------------------------- ### MIT License Applies to: PDFsharp, PDFtoImage, SkiaSharp (managed binding), CommunityToolkit.Mvvm, Microsoft.Extensions.*, Avalonia (and the Avalonia.Fonts.Inter package code), with the copyright holders listed above. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ### BSD 3-Clause License Applies to the native libraries bundled by the packages above: Skia (Copyright (c) Google LLC) and PDFium (Copyright 2014 The PDFium Authors). Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ### Apache License 2.0 Applies to: PdfPig, the PDFium binary packaging (bblanchon.PDFium), the Tesseract .NET wrapper together with the bundled native Tesseract OCR engine, and the bundled Tesseract language models (eng/ita "fast" traineddata). The complete Apache License 2.0 text ships with this distribution as "licenses/LICENSE-2.0.txt" (canonical text: https://www.apache.org/licenses/LICENSE-2.0). The Apache-2.0 license includes an express grant of patent rights from the contributors of the above components. ### SIL Open Font License, Version 1.1 Applies to: the Inter font (bundled via Avalonia.Fonts.Inter) and the Liberation Sans font (embedded in Hisui.Pdf.Core). The complete OFL 1.1 text ships with this distribution with each font's copyright notice: "licenses/OFL.txt" (Inter) and "licenses/OFL-Liberation.txt" (Liberation Sans) (SPDX identifier: OFL-1.1). Under the OFL, the fonts may be bundled and redistributed freely, must remain under the OFL, may not be sold by themselves, and the Reserved Font Names ("Inter"; "Liberation", "Arimo", "Tinos", "Cousine") may not be used for modified versions. The OFL does not apply to documents created with the fonts.