exif.pl — Third-Party Software Notices
Revision: 2026
This document accompanies the exif.pl distribution available from https://exif.pl/. It identifies third-party software used to build or run the application and reproduces the notices and license terms applicable to components distributed with the production site.
Copyright © 2026 Lilo Huang in exif.pl's original material. Third-party components remain the property of their respective copyright holders. Their licenses apply only to those components and do not grant any license to exif.pl's original proprietary code, interface, documentation, branding, styling, or other original material.
Audit scope and verification
This inventory was rebuilt from the current package-lock.json, installed package metadata and license files, production imports, external network references, the production build output, and the source configuration for the bundled WebAssembly runtime.
- The lockfile contains 85 non-root package entries.
- Normalized lockfile inventory SHA-256: c26a09354e8ee2e86dd4748a35fd0fc5526268860f44fa7ec0f1ea75280ba8a4
- The distributed public/zeroperl.wasm file is byte-for-byte identical to both WebAssembly files installed with @lilohuang/zeroperl-ts 1.0.11.
- SHA-256: 43e577e0b0eaf84cede3110a2335db806dbac508b00ba5e20da04c38a92e3a83
Components used by the production site
Browser runtime and generated assets
1. @lilohuang/exiftool 1.0.10
- Purpose: JavaScript/TypeScript wrapper used for browser-based metadata reading and extraction.
- License: Apache License 2.0.
- Source: https://github.com/lilohuang/exiftool
2. @lilohuang/zeroperl-ts 1.0.11
- Purpose: JavaScript/TypeScript interface to the ZeroPerl WebAssembly runtime.
- License: Apache License 2.0.
- Source: https://github.com/lilohuang/zeroperl-ts
3. Tailwind CSS 4.3.1
- Package: tailwindcss 4.3.1.
- Purpose: CSS framework used to generate portions of the production stylesheet.
- License: MIT.
- Copyright: Copyright (c) Tailwind Labs, Inc.
- Source: https://github.com/tailwindlabs/tailwindcss/tree/v4.3.1
4. Vite 8.2.1
- Package: vite 8.2.1.
- Purpose: Build tooling; generated runtime bootstrap code may be present in production JavaScript.
- License: MIT.
- Copyright: Copyright (c) 2019-present, VoidZero Inc. and Vite contributors.
- Source: https://github.com/vitejs/vite/tree/v8.2.1
Bundled WebAssembly runtime
The distributed zeroperl.wasm contains or is linked with the following software. The runtime source configuration and the exact distributed binary were reviewed for this inventory.
5. ZeroPerl WebAssembly port and build integration
- License: MIT.
- Copyright: Copyright (c) 2025 United States Writing Corportation.
- Source: https://github.com/lilohuang/zeroperl
- The spelling of the copyright holder above is reproduced verbatim from the upstream license.
6. Perl 5.42.0, including bundled core modules and extensions
- License offered upstream: GNU General Public License version 1 or later, or the Perl Artistic License.
- License selected for this distribution: Perl Artistic License.
- Copyright: Copyright (C) 1993 - 2025 by Larry Wall and others. All rights reserved.
- Standard source: https://github.com/Perl/perl5/tree/v5.42.0
7. ExifTool 13.59
- License offered upstream: the same terms as Perl itself, either the Perl Artistic License or GPL.
- License selected for this distribution: Perl Artistic License.
- Copyright: Copyright 2003-2026, Phil Harvey.
- Standard source: https://github.com/exiftool/exiftool/tree/13.59
8. zlib 1.3.1
- License: zlib License.
- Copyright: Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler.
- Source: https://github.com/madler/zlib/tree/v1.3.1
9. bzip2/libbzip2 1.0.8
- License: bzip2 License.
- Copyright: Copyright (C) 1996-2019 Julian R Seward. All rights reserved.
- Source: https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz
10. wasi-libc from WASI SDK 27
- Source revision: 3f7eb4c7d6ede4dde3c4bffa6ed14e8d656fe93f.
- License selected for wasi-libc as a whole: Apache License 2.0 with LLVM Exceptions.
- Original portions retain the CC0, MIT, BSD-2-Clause, or BSD-3-Clause terms identified in the wasi-libc notice below.
- Source: https://github.com/WebAssembly/wasi-libc/tree/3f7eb4c7d6ede4dde3c4bffa6ed14e8d656fe93f
11. LLVM compiler runtime from WASI SDK 27 / LLVM 20.1.8
- Source revision: 87f0227cb60147a26a1eeb4fb06e3b505e9c7261.
- License: Apache License 2.0 with LLVM Exceptions.
- Source: https://github.com/llvm/llvm-project/tree/87f0227cb60147a26a1eeb4fb06e3b505e9c7261
Complete npm build-toolchain audit
The following packages are recorded in the lockfile and are used by, optional to, or platform-specific parts of the build toolchain. They are not shipped as standalone packages by the production website. Platform binding families include every target recorded by the lockfile, not only the binding installed on the review machine.
- Apache-2.0: detect-libc 2.1.2. The two Apache-licensed runtime packages are listed separately above.
- BSD-3-Clause: source-map-js 1.2.1.
- ISC: graceful-fs 4.2.11; picocolors 1.1.1.
- 0BSD: tslib 2.8.1.
- MPL-2.0: lightningcss 1.32.0 and 1.33.0, including their Android ARM64, Darwin ARM64/x64, FreeBSD x64, Linux ARM GNU, Linux ARM64 GNU/musl, Linux x64 GNU/musl, and Windows ARM64/x64 MSVC binding packages recorded by the lockfile.
- MIT — Tailwind toolchain: @tailwindcss/vite 4.3.1; @tailwindcss/node 4.3.1; @tailwindcss/oxide 4.3.1 and its Android ARM64, Darwin ARM64/x64, FreeBSD x64, Linux ARM GNU, Linux ARM64 GNU/musl, Linux x64 GNU/musl, WASI, and Windows ARM64/x64 MSVC binding packages.
- MIT — Vite and Rolldown toolchain: Vite 8.2.1; Rolldown 1.2.3; @rolldown/pluginutils 1.0.1; @oxc-project/types 0.143.0; and Rolldown bindings for Android ARM64, Darwin ARM64/x64, FreeBSD x64, Linux ARM GNU, Linux ARM64 GNU/musl, Linux PPC64 GNU, Linux S390x GNU, Linux x64 GNU/musl, OpenHarmony ARM64, and Windows ARM64/x64 MSVC.
- MIT — source maps and transforms: @jridgewell/gen-mapping 0.3.13; @jridgewell/remapping 2.3.5; @jridgewell/resolve-uri 3.1.2; @jridgewell/sourcemap-codec 1.5.5; @jridgewell/trace-mapping 0.3.31; magic-string 0.30.21; PostCSS 8.5.26; nanoid 3.3.18.
- MIT — loading, matching, and file discovery: enhanced-resolve 5.21.6; tapable 2.3.3; jiti 2.7.0; tinyglobby 0.2.17; fdir 6.5.0; picomatch 4.0.5; fsevents 2.3.3.
- MIT — WebAssembly build helpers: @emnapi/core 1.10.0; @emnapi/runtime 1.10.0; @emnapi/wasi-threads 1.2.1; @napi-rs/wasm-runtime 1.1.5; @tybys/wasm-util 0.10.2.
License identifiers in this build-toolchain section come from the locked package metadata. The corresponding source distributions and installed license files remain authoritative. The MPL-2.0 tools operate during the build and are not included as standalone executables or source files in the deployed site.
External services and remotely served assets
These resources are not bundled in exif.pl's production files, but a visitor's browser may connect to them:
1. Google Fonts
- The page requests font CSS and font files from Google Fonts when it loads.
- Inter: SIL Open Font License 1.1; Copyright 2020 The Inter Project Authors.
- Inter source and license: https://github.com/google/fonts/tree/main/ofl/inter
- Roboto Mono: SIL Open Font License 1.1; Copyright 2015 The Roboto Mono Project Authors.
- Roboto Mono source and license: https://github.com/google/fonts/tree/main/ofl/robotomono
2. OpenStreetMap
- When a user chooses to display GPS map data, exif.pl loads an embed from OpenStreetMap.
- No OpenStreetMap map data is bundled in exif.pl's application files.
- OpenStreetMap data and services remain subject to the notices and terms shown at https://www.openstreetmap.org/copyright.
License selection and separation
Where Perl and ExifTool offer a choice of license, this distribution relies on the Perl Artistic License option reproduced below. Standard versions are available from the source locations listed above. This election applies only to Perl, ExifTool, and material distributed under those terms. It does not place exif.pl's original code under the Artistic License or the GPL.
Where wasi-libc offers multiple licenses, this distribution relies on Apache License 2.0 with LLVM Exceptions for wasi-libc as a whole, while preserving the original licenses of its third-party portions.
The names of third-party projects and contributors are used only to identify origin. No endorsement of exif.pl by any third-party author, service, or project is implied.
Full license texts and notices
Apache License 2.0
Applies to @lilohuang/exiftool and @lilohuang/zeroperl-ts. It also forms the base license for wasi-libc and LLVM material identified above when accompanied by the LLVM Exceptions in the next section.
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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The End
MIT License — ZeroPerl WebAssembly port
MIT License
Copyright (c) 2025 United States Writing Corportation
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
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zlib License
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
bzip2/libbzip2 License
This program, "bzip2", the associated library "libbzip2", and all
documentation, are copyright (C) 1996-2019 Julian R Seward. All
rights reserved.
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.
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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.
Julian Seward, jseward@acm.org
bzip2/libbzip2 version 1.0.8 of 13 July 2019
wasi-libc upstream license notice
wasi-libc as a whole is multi-licensed under the
Apache License v2.0 with LLVM Exceptions, the Apache License v2.0, and
the MIT License. See the LICENSE-APACHE-LLVM, LICENSE-APACHE and LICENSE-MIT
files, respectively, for details.
Portions of this software are derived from third-party works covered by
their own licenses:
dlmalloc/ - CC0; see the notice in malloc.c for details
emmalloc/ - MIT; see the notice in emmalloc.c for details
libc-bottom-half/cloudlibc/ - BSD-2-Clause; see the LICENSE file for details
libc-top-half/musl/ - MIT; see the COPYRIGHT file for details
fts/musl-fts/ - BSD-3-Clause; see the COPYING file for details
wasi-libc's changes to these files are multi-licensed under the
Apache License v2.0 with LLVM Exceptions, the Apache License v2.0,
the MIT License, and the original licenses of the third-party works.
The list above is the upstream source-tree notice. Its reproduction here does not assert that every optional source file survives linking and optimization in the distributed WebAssembly binary.
dlmalloc notice
This is a version (aka dlmalloc) of malloc/free/realloc written by
Doug Lea and released to the public domain, as explained at
http://creativecommons.org/publicdomain/zero/1.0/. Send questions,
comments, complaints, performance data, etc. to dl@cs.oswego.edu.
Version 2.8.6, August 29, 2012, Doug Lea.
emmalloc notice
Copyright 2018 The Emscripten Authors. All rights reserved.
Emscripten is available under two separate licenses, the MIT license and the
University of Illinois/NCSA Open Source License. For the MIT option:
Permission is hereby granted, free of charge, to any person obtaining a copy
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Copyright (c) 2015-2017 Nuxi (https://nuxi.nl/) and contributors.
Redistribution and use in source and binary forms, with or without
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musl MIT notice
Copyright © 2005-2020 Rich Felker, et al.
Permission is hereby granted, free of charge, to any person obtaining
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The complete musl authorship and third-party-origin notice for the wasi-libc revision used here is available at https://github.com/WebAssembly/wasi-libc/blob/3f7eb4c7d6ede4dde3c4bffa6ed14e8d656fe93f/libc-top-half/musl/COPYRIGHT.
musl-fts BSD-3-Clause notice
Copyright (c) 1989, 1993
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documentation and/or other materials provided with the distribution.
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MIT License — Tailwind CSS
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MIT License — Vite
MIT License
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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SOFTWARE.