Kitsumi
Copyright (c) 2026 Olexify. All rights reserved.
Kitsumi(TM) and the Kitsumi logos are trademarks of Olexify.

Kitsumi is free to use. It is not open source.


No permission is granted to copy, modify, merge, publish, distribute,
sublicense, sell, reverse engineer, or create derivative works from any part of
Kitsumi, in whole or in part, without prior written permission from the
copyright holder. This applies to the source code, and equally to the compiled
extension package distributed through the Chrome Web Store, addons.mozilla.org
and the Opera add-ons site.

Having access to the source code grants no licence to use, copy, or
redistribute any part of it. The fact that a browser extension package is
readable once installed or downloaded does not place its contents in the public
domain and does not grant any licence to reuse them.


The extension package also contains software and data that is not Kitsumi's,
under open licences that grant you rights this licence cannot take away.
Section 1 does not apply to those components. Each is governed by its own
licence, and those licences prevail over anything here.

Every one of them is listed, with its licence and the path to the full licence
text inside the package, in THIRD-PARTY-NOTICES.txt. The same list is readable
inside the extension at Settings, About & legal, Third-party licences. In
summary:

Tesseract.js; the Tesseract OCR engine compiled to
WebAssembly, which links Leptonica, libpng and libtiff;
and the Japanese vertical recognition data Apache License 2.0

fflate MIT

Kanji usage frequency data, by Dmitry Shpika, modified CC BY 4.0

Dictionaries downloaded through Kitsumi are not part of the package. They are
fetched from third-party hosts at the user's request, and each keeps whatever
licence its publisher gave it.

Fonts and word packs downloaded through Kitsumi are not part of the package
either. Each font keeps its own licence (SIL Open Font License 1.1, or Apache
License 2.0 for Kosugi Maru). The word packs for Advanced scanning are derived
from JMdict (Electronic Dictionary Research and Development Group) and
CC-CEDICT (MDBG) and are shared under CC BY-SA 4.0; see the README at
https://github.com/Olexify/KitsumiOPS.


Documentation in Kitsumi's repositories, meaning the README and other Markdown
files, may be quoted for review, commentary and reporting purposes, with
attribution.


Kitsumi is provided "as is" and "as available", without warranty of any kind,
express or implied, including but not limited to the implied warranties of
merchantability, fitness for a particular purpose, title, and
non-infringement. No advice or information obtained through Kitsumi, whether
spoken or written, creates any warranty not stated here.

Kitsumi displays material that comes from third-party websites, files and
services outside the copyright holder's control. There is no guarantee that
any subtitle, dictionary entry, translation, recognised text or generated card
is accurate, complete or fit for any purpose, nor that any third-party service
will remain available or keep working as it does today.


To the maximum extent permitted by applicable law, the copyright holder is not
liable for any indirect, incidental, special, consequential or exemplary
damages, nor for any loss of or damage to data, loss of profits, or
interruption of study or work, arising out of or in connection with Kitsumi or
its use, whether the claim is founded in contract, tort or otherwise, and even
if the possibility of such damage was known.

Where liability cannot lawfully be excluded, it is limited to the amount you
paid for Kitsumi, which is nothing.

Nothing in this licence excludes or limits liability for death or personal
injury caused by negligence, for fraud or fraudulent misrepresentation, or for
anything else that applicable law does not allow to be excluded or limited. If
you are a consumer, this licence does not affect your statutory rights.


Kitsumi is a tool. It hosts no video, no subtitles and no dictionaries, and it
supplies no copyrighted content of its own. What it shows you comes from the
page you are on, from files you provide, or from third-party services you
choose to enable.

You are responsible for having the right to access that material, and for
complying with the terms of the sites and services you use Kitsumi with.

The same applies to files you add to Kitsumi yourself - subtitle files,
dictionaries, fonts: they stay on your device, and you are responsible for
having the right to use them. The copyright holder does not check, supply or
license them.

Custom subtitle providers. Kitsumi lets you add a subtitle site of your own
choosing (Settings, Subtitle providers, Custom providers). A custom provider is
not part of Kitsumi: the copyright holder does not make, check, endorse,
supply or support it, and has no control over the site it contacts. By adding
one you accept that:
- you alone chose it, and you alone are responsible for checking that the
site is genuine, lawful and safe;
- you are responsible for having the right to use that service and anything
it provides, under its own terms and the laws that apply to you, copyright
included;
- everything the provider sends or receives - your searches, any key you give
it, and every file you download through it - is between you and that site;
- sections 4 and 5 apply to custom providers in full, and, to the maximum
extent permitted by applicable law, the copyright holder is not liable for
any loss or damage caused by a custom provider or by anything obtained
through one, and any claim a third party makes because of a custom provider
you added is your responsibility, not the copyright holder's.
Kitsumi records on your device when you accepted this for each custom
provider you add.


This licence, and any dispute arising out of it or out of the use of Kitsumi,
is governed by the laws of Ukraine, without regard to its conflict-of-law
rules, and the courts of Ukraine have jurisdiction over any such dispute.

If you are a consumer, the mandatory consumer-protection law of the country
where you live still applies to you, and you may also bring a claim in the
courts of that country; nothing here takes that away.

If any part of this licence is found unenforceable, the rest of it stays in
force.


Licensing enquiries: olexifyyy@gmail.com

Copyright complaints: if you believe something Kitsumi ships or links to
infringes your rights, write to olexifyyy@gmail.com with the work concerned,
where it appears, and how to contact you.