Free app for opening and creating ZIP files
Last updated: 2026-04-23
ZIP Extractor is built with help from the open source components listed below. Thanks to the authors and maintainers who make them available. Each component is governed by its own license terms, summarized in the tables that follow.
| Library | Version | Purpose | License | Copyright |
|---|---|---|---|---|
| PDF.js | 5.3.31 | PDF rendering | Apache 2.0 | Copyright © 2024 Mozilla Foundation |
| LaTeX.js | - | LaTeX to HTML rendering | MIT | Copyright © LaTeX.js contributors (bundled Computer Modern and KaTeX fonts are licensed under SIL OFL 1.1 - see Fonts section) |
| Marked | 15.0.12 | Markdown rendering | MIT | Copyright © 2011-2025 Christopher Jeffrey |
| RTFJS / EMFJS / WMFJS | - | RTF, EMF, WMF document rendering | MIT | Copyright © 2015 Thomas Bluemel; Copyright © 2016-2020 Tom Zoehner; Copyright © 2018 Thomas Bluemel; Copyright © 2020 Ynse Hoornenborg |
| EPUB.js | - | EPUB reader | BSD 2-Clause | Copyright © FuturePress |
| UTIF.js | - | TIFF image decoding | MIT | Copyright © 2017 Photopea |
| PapaParse | 5.5.3 | CSV parsing | MIT | Copyright © Milo Holt |
| Google Code Prettify | - | Syntax highlighting | Apache 2.0 | Copyright © 2006 Google Inc. |
| jsmediatags | 3.9.7 | Audio metadata reading (ID3, etc.) | BSD 3-Clause | Copyright © Jerémie Wenger |
| Library | Purpose | License | Copyright / Attribution |
|---|---|---|---|
| fzstd | Zstandard decompression | MIT | Copyright © 2020 Arjun Barrett |
| Brotli.js | Brotli decompression | Apache 2.0 (original) / MIT (JS port) | Copyright © 2013 Google Inc. (original Brotli); Copyright © foliojs (JavaScript port) |
| JZlib-derived Deflate/Inflate | Deflate/Inflate compression | BSD 3-Clause | Copyright © 2013 Gildas Lormeau; based on JZlib 1.0.2 by ymnk/JCraft and zlib 1.1.3 by Jean-loup Gailly & Mark Adler |
| LZMA SDK | LZMA/LZMA2 decompression | Public Domain | Igor Pavlov / 7-Zip |
| PPMd (variant I) | PPMd decompression | Public Domain | Dmitry Shkarin (via 7-Zip SDK) |
| bzip2 | Bzip2 decompression | bzip2/libbzip2 license (BSD-style) | Original bzip2: Copyright © 1996-2010 Julian Seward. JavaScript implementation: Copyright © 2013-2026 Visware, LLC. |
| LZ4 | LZ4 frame & block decompression | BSD 2-Clause | LZ4 original: Copyright © 2011-2020 Yann Collet. JavaScript implementation: Copyright © 2025-2026 Visware, LLC. |
| XZ/LZMA2 | XZ container decompression | Public Domain | Based on LZMA SDK and the XZ specification (tukaani.org) |
| ncompress | Unix compress (.Z) LZW decompression | See upstream (ncompress) | ncompress project |
| JSZip | ZIP support (EPUB.js dependency) | MIT * | Copyright © 2009-2016 Stuart Knightley; includes pako (MIT) by Vitaly Puzrin, Andrey Tupitsin |
* JSZip is dual-licensed under the MIT License or GPLv3. ZIP Extractor uses JSZip under the MIT License.
| Library | Purpose | License | Copyright |
|---|---|---|---|
| SJCL (subset) | AES-CBC for RAR archive headers | BSD 2-Clause * | Copyright © 2009-2015 Emily Stark, Mike Hamburg, Dan Boneh, Stanford University |
| aes-js | AES encryption/decryption (WinZip AES, 7z AES) | MIT | Copyright © 2015-2018 Richard Moore |
| js-sha256 | SHA-256 hashing (7z key derivation) | MIT | Copyright © 2014-2017 Chen, Yi-Cyuan |
* SJCL is dual-licensed under the BSD 2-Clause License or GPLv2. ZIP Extractor uses SJCL under the BSD 2-Clause License.
| Library | Version | Purpose | License | Copyright |
|---|---|---|---|---|
| DOMPurify | 3.3.2 | HTML sanitization | Apache 2.0 / MPL 2.0 | Copyright © Cure53 and contributors |
| Panzoom | 4.6.0 | Image pan and zoom | MIT | Copyright © 2016-2019 Timmy Willison |
| cptable.js (SheetJS) | 1.15.0 | Code page conversion (RTF) | Apache 2.0 | Copyright © 2013-present SheetJS (bundled inside RTFJS) |
| he | 1.2.0 | HTML entity decoder (LaTeX.js dependency) | MIT | Copyright © Mathias Bynens (bundled inside LaTeX.js) |
| Font | Purpose | License | Attribution |
|---|---|---|---|
| Roboto | Application UI typography | Apache 2.0 | Copyright © Google LLC |
| Roboto Mono | Monospaced text in application UI | Apache 2.0 | Copyright © Google LLC |
| Google Material Icons | Icon glyphs in application UI | Apache 2.0 | Copyright © Google LLC |
| Computer Modern Unicode & KaTeX fonts | LaTeX document rendering (bundled with LaTeX.js) | SIL Open Font License 1.1 | Based on Computer Modern by Donald E. Knuth; additional weights by Andrey V. Panov and KaTeX font contributors |
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.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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. 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.
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.
The bzip2/libbzip2 license is a BSD-style permissive license. The
full text is distributed with the bzip2 source tree:
https://sourceware.org/git/?p=bzip2.git;a=blob;f=LICENSE
The full text of the Mozilla Public License 2.0 is available at:
https://www.mozilla.org/en-US/MPL/2.0/
The full text of the SIL Open Font License 1.1 is available at:
https://scripts.sil.org/OFL