base on 📝 File hashing and checking shell extension # OpenHashTab [](COPYING) [](https://hosted.weblate.org/projects/openhashtab/main/) [](https://github.com/namazso/OpenHashTab/releases/latest) [](https://github.com/namazso/OpenHashTab/releases/latest) [](https://chocolatey.org/packages/openhashtab/)  ## About OpenHashTab is a shell extension for conveniently calculating and checking file hashes from file properties. ## Features * Support for 28 algorithms, see **Algorithms** * High performance hash calculation * Native Windows looks * High DPI screen support * Long path support\* * Multilingual (Consider contributing to translation!) * Check hashes against VirusTotal with a button * Hash checking against a checksum file (Supported: hex hash next to file, \*sum output (hex or base64), corz .hash, SFV) * Hash export to file or clipboard (Supported: \*sum output, corz .hash, SFV) * Optional context menu option for faster access * File associations and standalone mode \* to the extent Windows and configuration supports it. [Enable long paths](https://www.tenforums.com/tutorials/51704-enable-disable-win32-long-paths-windows-10-a.html) on 1607+ for better support. ## System requirements * Windows 7 or later (x86 / x64 / ARM64) * 1 GB RAM or more (for efficient hashing of more than 512 files at a time) ## Usage Most of the actions should be obvious. Some not-so-obvious features are listed here: * You can select multiple files or folders, all files will be hashed, directories traversed * Double click hash to copy it * Double click name or algorithm to copy the line in sumfile format * Right click for popup menu: copy hash, copy filename, copy line, copy everything * The counters next to the status text is in the format `(match/mismatch/nothing to check against/error)` * Columns sort lexicographically, except the hash column which sorts by match type * Selecting the tab on a sumfile will interpret it as such and hash the files listed in it. * If a hashed file has a sumfile with same filename plus one of the recognized sumfile extensions and the option for it is enabled, the file hash is checked against it. ### Advanced features #### Override Windows language selection Add a `DWORD` named `LangIdOverride` to `HKEY_CURRENT_USER\SOFTWARE\OpenHashTab` (create if it does not exist) with your preferred [LCID](https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/70feba9f-294e-491e-b6eb-56532684c37f) #### Disable VirusTotal button for all users on a machine Add a `DWORD` named `ForceDisableVT` to `HKEY_LOCAL_MACHINE\SOFTWARE\OpenHashTab` (create if it does not exist) with a nonzero value ## Algorithms * CRC32, CRC64 (xz) * xxHash (XXH32, XXH64) * xxHash3 (64 and 128 bit variants) * MD4, MD5 * RipeMD160 * Blake2sp * SHA-1 * SHA-2 (SHA-224, SHA-256, SHA-384, SHA-512) * SHA-3 (SHA3-224, SHA3-256, SHA3-384, SHA3-512) * BLAKE3 (256 bit, 512 bit) * KangarooTwelve (264 bit, 256 bit, 512 bit) * ParallelHash128 (264 bit) and ParallelHash256 (528 bit) * Streebog (GOST R 34.11-12) (256 bit, 512 bit) ## Download [Latest release](https://github.com/namazso/OpenHashTab/releases/latest) [Latest development build](https://nightly.link/namazso/OpenHashTab/workflows/ci/master/setup.zip) [Development builds](https://github.com/namazso/OpenHashTab/actions?query=branch%3Amaster) ## Screenshot   ## Translation  Translate the project at [Weblate](https://hosted.weblate.org/projects/openhashtab/main/) ## Building See [build_all.ps1](build_all.ps1) ## Relationship to HashTab HashTab was a similar purpose proprietary software. While this software has been inspired by it, I was never a user of HashTab and this software contains no code or resources related to it. ## License All original code in this repo is licensed under the following license, unless explicitly stated otherwise in the file: Copyright 2019-2025 namazso <[email protected]> OpenHashTab - File hashing shell extension OpenHashTab is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. OpenHashTab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenHashTab. If not, see <https://www.gnu.org/licenses/>. This software also contains or uses code from various other sources, for a complete list see [InstallerLicense.rtf](InstallerLicense.rtf) ", Assign "at most 3 tags" to the expected json: {"id":"13222","tags":[]} "only from the tags list I provide: []" returns me the "expected json"