KISS Translator

English | 中文 | 日本語 | 한국어

A simple, open source bilingual translation extension & Greasemonkey script.

kiss-translator.webm

Features

• Keep it simple, smart
• Open source
• Adapt to common browsers
  • Chrome/Edge
  • Firefox
  • Kiwi (Android)
  • Orion (iOS)
  • Safari
  • Thunderbird
• Supports multiple translation services
  • Google/Microsoft
  • Tencent/Volcengine
  • OpenAI/Gemini/Claude/Ollama/DeepSeek/OpenRouter
  • DeepL/DeepLX/NiuTrans
  • AzureAI / CloudflareAI
  • Chrome built-in AI translation (BuiltinAI)
• Covers common translation scenarios
  • Webpage bilingual translation
  • Input-box translation
    • Instantly translate text in input fields into other languages via shortcut keys
  • Text selection translation
    • Open translation popup on any page, support multiple translation services for comparison
    • English dictionary lookup
    • Save vocabulary
  • Hover translation
  • YouTube subtitle translation
    • Support translating video subtitles with any translation service and display bilingually
    • Built-in basic subtitle merging and sentence-splitting algorithm to improve translation quality
    • Supports AI-powered sentence segmentation for even better translation
    • Custom subtitle style
• Supports diverse translation modes
  • Supports both automatic text recognition and manual rule modes
    • Automatic text recognition mode allows most sites to be translated fully without writing rules
    • Manual rule mode enables extreme optimization for specific sites
  • Custom translation styling
  • Supports rich-text translation and rendering, preserving links and other text styles where possible
  • Option to show only translation (hide original text)
• Advanced translation API features
  • With custom API support, theoretically works with any translation service
  • Batch aggregation of translation requests
  • Supports AI conversation context memory to improve translation quality
  • Custom AI terminology dictionary
  • All APIs support hooks and custom parameters for advanced usage
• Cross-client data synchronization
  • KISS-Worker（cloudflare/docker）
  • WebDAV
• Custom translation rules
  • Rule subscription/rule sharing
  • Customized terminology
• Custom shortcut keys
  • Alt+Q Toggle Translation
  • Alt+C Toggle Styles
  • Alt+K Open Setting Popup
  • Alt+S Open Translate Popup / Translate Selected Text
  • Alt+O Open Options Page
  • Alt+I Input Box Translation

Install

Note: For the following reasons, it is recommended to use browser extensions first

• Browser extensions have more complete functions (local language recognition, context menu, etc.)
• Grease Monkey script will encounter more usage problems (cross domain issues, script conflicts, etc.)

• Browser extension
  • Chrome Installation address
    • Kiwi (Android)
    • Orion (iOS)
  • Edge Installation address
  • Firefox Installation address
  • Safari
    • Safari (Mac)
    • Safari (iOS)
  • Thunderbird Download address
• GreaseMonkey Script
  • Chrome/Edge/Firefox (Tampermonkey/Violentmonkey) Installation link
    • Greasy Fork
  • iOS Safari (Userscripts Safari) Installation link

Associated Projects

• Data synchronization service: https://github.com/fishjar/kiss-worker
  • Data synchronization service available for this project.
  • Can also be used to share personal private rule lists.
  • Deploy by yourself, manage by yourself, data is private.
• Community subscription rules: https://github.com/fishjar/kiss-rules
  • Provides the latest and most complete list of subscription rules maintained by the community.
  • Help with rules-related issues.

Frequently Asked Questions

How to Set Keyboard Shortcuts

Set this in the extension management page, for example:

• chrome chrome://extensions/shortcuts
• firefox about:addons

What is the priority order of rule settings?

Personal Rules > Subscription Rules > Global Rules

Among these, Global Rules have the lowest priority but are very important as they serve as the default rules.

API (Ollama, etc.) Test Failure

Common reasons for API test failures include:

• Incorrect address:
  • For example, Ollama has a native API address and an Openai-compatible address. This plugin currently supports the Openai-compatible address and does not support the Ollama native API address.
• Some AI models do not support batch translation:
  • In this case, you can choose to disable batch translation or use a custom API.
  • Alternatively, you can use a custom API. For details, please refer to: Custom API Example Documentation
• Some AI models have inconsistent parameters:
  • For example, the parameters of the Gemini native API are highly inconsistent. Some model versions do not support certain parameters, leading to errors.
  • In this case, you can modify the request body using a Hook, or replace it with Gemini2 (an OpenAI-compatible address).
• The server restricts cross-origin access, returning a 403 error:
  • For example, Ollama requires adding the environment variable OLLAMA_ORIGINS=* when starting. See: https://github.com/fishjar/kiss-translator/issues/174

Custom API doesn't work in Tampermonkey scripts

Tampermonkey scripts require adding domains to the whitelist; otherwise, requests cannot be sent.

How to set up a hook function for a custom API

Custom APIs are very powerful and flexible, and can theoretically connect to any translation API.

Example reference: custom-api_v2.md

How to directly access the Tampermonkey script settings page

Settings page address: https://fishjar.github.io/kiss-translator/options.html

Future Plans

This is a side project with no strict timeline. Community contributions are welcome. The following are preliminary feature directions:

• Batch Text Requests: Optimize request strategy to reduce translation API calls and improve performance.
• Enhanced Rich Text Translation: Support accurate translation of complex page structures and rich text content.
• Advanced Custom/AI Interfaces: Add support for context memory, multi-turn conversations, and other advanced AI features.
• Fallback English Dictionary: When translation services fail, fall back to a local dictionary lookup.
• Improved YouTube Subtitle Support: Enhance merging and translation experience for streaming subtitles, reducing sentence fragmentation.
• Upgraded Rule Collaboration System: Introduce more flexible rule sharing, version management, and community review processes.

If you're interested in any of these directions, feel free to discuss in Issues or submit a PR!

Development Guidelines

git clone https://github.com/fishjar/kiss-translator.git
cd kiss-translator
git checkout dev # Submit a PR suggestion to push to the dev branch
pnpm install
pnpm build

Discussion

• Join Telegram Group

Appreciate