AO3 Translator

An extension designed to enhance the Chinese reading experience on Archive of Our Own.

简体中文 · English · Docs · Changelog · QQ Channel

📖 Brief Introduction

Provides full-site UI localization, real-time multi-engine content translation, smart content blocking, immersive reading typography, glossary management, translation cache acceleration, and full-format work exporting—delivering an unprecedentedly smooth reading experience for Chinese users on AO3.

✨ Core Features

🌐 Real-Time Multi-Engine Translation System

Supports traditional translation engines (Google Translate, Bing Translator) and over 10 Large Language Model (LLM) services, covering all mainstream AI translation capabilities:

Category	Supported Services
Traditional Engines	Google Translate, Bing Translator
Global AI	OpenAI, Anthropic (Claude), Google AI (Gemini), Groq AI, Together AI, Cerebras
Chinese AI	DeepSeek, Zhipu AI (GLM), SiliconFlow, ModelScope
Custom	Any third-party service compatible with the OpenAI API, supporting automatic model list fetching via /models

Enterprise-Grade Translation Dispatch Architecture:

• Token Bucket Rate Limiting — Independently configure request rates and maximum burst limits for each engine to prevent API throttling.
• Concurrent Batch Processing — Smartly merges multiple paragraphs into a single request, supporting dynamic batching based on character length and paragraph count.
• Retry & Exponential Backoff — Automatically identifies scenarios like 429 rate limits and 5xx server errors, applying exponential backoff with jitter; automatically switches to the next API Key on Auth errors.
• Dynamic Circuit Breaking — Automatically triggers a global freeze upon consecutive server overloads, gradually extending the cooldown period.
• API Key Blacklisting — Marks and automatically skips failed keys within the same page lifecycle, supporting multi-key polling.
• Placeholder Protection — Ensures specific terms remain unaltered during translation, supporting post-processing validation and anomaly detection.

🎨 Deep AO3 UI Localization

More than just text translation—the script performs deep, native-level localization on AO3's highly complex page structures, covering:

• Work Search Page (search fields, help modals, date/tag/crossover/numerical filter instructions)
• Tag Browsing & Search (tag types, wrangling status, synonymous/sub/meta tag relationships)
• Collections/Challenges Management (nomination rules, sign-up processes, event status)
• User Dashboard (preferences, privacy options, skin management, history, SVG translation for statistics charts)
• Posting & Editing Works (all form fields, tooltips, validation errors)
• Page-Specific Translation Functions (invitation requests, error pages, bookmark searches, and 40+ custom translation logics)

🛡️ Powerful Content Blocker

A comprehensive work list filtering system to help you say goodbye to unwanted content:

Blocking Dimension	Description
Tag Blacklist	Supports exact match, wildcards (*), and chained condition combinations ('TagA'+'TagB'-'TagC')
Tag Whitelist	Tags in the whitelist mark the work as safe, bypassing all other blocking rules
Content Filtering	Exact blocking by author name, title keywords, summary keywords, or Work ID
Stats Filtering	Word count range, chapter range, auto-block WIPs unupdated for N months, crossover limit
Advanced Filtering	Exact filtering by the first N relationship tags, first N character tags, or specific languages only

Supports Alt + Click Quick Blocking—hold Alt and click any tag/author/work link to instantly add it to the blacklist. Blocked work cards will be collapsed, displaying the reason for blocking, with an option to temporarily expand and view.

📖 Immersive Reading & Typography

• Bilingual / Translation-Only display modes, switchable with one click.
• Custom typography profiles (first-line indent, font size, letter spacing, line height, margins), supporting multi-profile management and instant preview.
• Automatically cleans up formatting residue like manually entered full-width spaces, NBSPs, and line breaks.
• Smart normalization for special text, including ~ separators, HTML tags, and small caps conversion.

📚 Local & Online Glossaries

• Local Glossary — Supports both case-sensitive and case-insensitive rules.
• Do-Not-Translate Glossary — Specify terms that should never be translated (e.g., character names, proper nouns).
• Regex Support — Use regular expressions directly for matching and replacing.
• Multi-part Terms — Terms separated by = for translating multiple segments individually.
• DOM-Level Node Replacement — Precise matching and replacement for complex text crossing HTML tag boundaries.
• Online Glossary Sync — Import community-maintained glossaries from GitHub Raw or jsDelivr, supporting auto-updates and drag-and-drop priority sorting for multiple glossaries.
• Post-Translation Replacement — Perform a final pass of text replacement after receiving the AI translation results.

⚡ High-Performance Cache System

A translation cache database built on native IndexedDB:

• Hash-Based Storage — Generates a unique Key using SHA-256 on the combination of (Original Text + Engine + Model + Language + System Prompt + Glossary Version) to ensure cache reliability.
• Auto-Expiration Cleanup — Supports dual eviction strategies based on days (default 30 days) and max item count (default 100,000).
• LRU Timestamp Updates — Automatically refreshes timestamps upon cache hits, keeping high-frequency terms from being evicted.
• Page-Level Clearing — One-click clearing of all translation caches on the current page for easy re-translation.
• Significant API Token Savings — Directly hits the cache for recurring text paragraphs, resulting in zero API calls.

📦 Full-Format Export Engine

One-click export of translated works into eBooks, featuring built-in JSZip and a custom CSS template system:

Format	Description
HTML	Standalone webpage with custom CSS templates (title page, TOC, body, bilingual display, mobile adaptation)
EPUB	Standard eBook format, supporting TOC navigation (NCX) and metadata
PDF	Generated via the browser's "Save as PDF" print feature, with CSS pagination control

• Custom Template Editor — Create/edit CSS templates for all three formats independently.
• Bilingual Export — Automatically detects the current display mode, supporting both translation-only and bilingual exports.
• Complete Metadata — Automatically extracts full work info including rating, warnings, fandoms, relationships, characters, and publish date.

🎛️ Modern UI & Interaction

• Shadow DOM Isolation — All extension UI runs in an isolated Shadow DOM, ensuring zero pollution to page styles and perfect coexistence with AO3's native themes and user-customized skins.
• Smart Floating Action Button (FAB) — Supports dragging, auto-edge snapping, and auto-hiding to the edge after 2 seconds on touch devices.
  • Four gestures: Click, Double-click, Long press, Right-click.
  • Customizable actions for each gesture: Open settings panel, Trigger translation/Clear translation, Clear page cache, Export current work, or No action.
  • Status indicator lights: Translating (Green), Retrying (Yellow), Error (Red), Idle (Blue).
• Custom Dropdown Menus — Replaces native <select>, supporting drag-and-drop sorting (for glossary priority), toggle switches, and deletion confirmation.
• Built-in Logging System — Tiered logs (INFO / WARN / ERROR) with auto-cleanup, real-time viewing, copying, exporting, and privacy data masking.

🤖 Supported Translation Engines

Built-in Engines

Engine	API Key	Notes
Google Translate	Not required	Traditional MT, fastest speed, handles large text volumes
Bing Translator	Not required	Traditional MT, auto-fetches Token
OpenAI	Required	GPT series models, supports reasoning_effort
Anthropic (Claude)	Required	Claude series models, supports extended thinking
Google AI (Gemini)	Required	Gemini series models, supports thinking budget
DeepSeek	Required	DeepSeek series models, highly cost-effective
Zhipu AI (GLM)	Required	GLM series models
SiliconFlow	Required	Chinese model aggregator, extremely rich model selection
Groq AI	Required	Ultra-low latency inference (LPU accelerated)
Together AI	Required	Model aggregator platform
Cerebras	Required	Ultra-fast inference speed
ModelScope	Required	ModelScope community model service
Custom Service	Optional	Any service compatible with OpenAI API, supports auto-fetching models via /models

AI Translation Configuration

• Create multiple translation parameter profiles, each bindable to different translation services and exclusive parameters.
• Custom System Prompt and User Prompt (built-in optimized 3-stage translation strategy template).
• Adjustable parameters: Temperature, Reasoning Effort, Text Volume per Request, Paragraph Limit, Request Rate, Max Burst, Lazy Load Margin, and Placeholder Validation Thresholds.

📦 Installation & Usage

Installation Guide

• Video Tutorials
  • Quark Drive
  • Baidu Netdisk
• Text Tutorial
  • Install a userscript manager in your browser. Tampermonkey is recommended.
  • Enable Developer mode in your browser's Manage Extensions page.
  • Click Tampermonkey → Details → Allow access to file URLs (or Allow running userscripts).
  • Choose a version to install:
    • Primary
      • Remote Version
      • Local Version
    • Backup
      • Remote Version
      • Local Version
  • After installing the script, visit/refresh the AO3 website, and the interface will automatically switch to Chinese.

Basic Usage

• Unit Translation Mode: Click buttons like "Translate Summary", "Translate Tags", or "Translate Text" on work cards to translate on demand.
• Full-Page Translation Mode: Double-click the settings panel title bar to switch modes. Use the FAB to trigger full-page automatic translation with one click.
• Click the FAB to open the settings panel. All configuration options can be found under "More Features".

⚙️ Configuration & Advanced Usage

Setting up API Keys

1. Open the settings panel → Select a translation service (e.g., DeepSeek).
2. Enter your Key in the "Set API Key" input box and click Save.
3. Supports entering multiple Keys (separated by ,). The script will automatically handle polling and blacklist management. For instructions on obtaining API Keys, please refer to the: API Key Guide.

Configuring Glossaries

1. Settings Panel → More Features → Set Local Glossary.
2. Case-sensitive input format: Original:Translation, Character Name:角色名.
3. Case-insensitive input format is the same as above.
4. Do-Not-Translate glossary only requires listing the original text (separated by commas).
5. Multi-part terms use an equals sign: Wakaba Mutsumi = 若叶 睦.

Online Glossaries: More Features → Manage Online Glossaries → Enter a GitHub Raw / jsDelivr link to import. You can also browse community-shared glossaries in the "Online Glossary Library" and import them with one click.

Setting up Blocking Rules

1. Settings Panel → More Features → Work Blocker Configuration.
2. Select the blocking dimension (Tag Filtering / Content Filtering / Stats Filtering / Advanced Filtering).
3. Enter the rules and save. The page will automatically refresh the blocking status.
4. Quick Action: Hold Alt and click any tag/author/work link to instantly add it to the blacklist.

Exporting Works

1. Settings Panel → More Features → Work Export & Generation.
2. Select the file format (HTML / EPUB / PDF). You can customize the CSS template styles.
3. Click "Format Selection" to check the formats you want to export.
4. Click "Export File".

🛡️ Privacy & Security

• 100% Local Storage — All configurations, API Keys, translation caches, and glossaries are stored locally in your browser's Tampermonkey storage (GM_getValue) or IndexedDB. Nothing is uploaded to any remote server.
• Zero Telemetry — The script contains no tracking, analytics, or crash reporting code.
• API Key Masking in Logs — The built-in logging system automatically replaces sensitive fields like API Keys and Tokens with [MASKED] when recording request data.
• Full Data Control — Supports categorized import/export of all configuration items (in JSON format) for easy backup and migration.
• Strict Network Requests — All authorized domains are explicitly declared in the script's @connect metadata. Tampermonkey strictly limits network requests to these domains.

📖 Documentation

• Documentation
  • FAQ
  • Translation Services Intro
• Tutorials
  • Using on Mirror Sites
  • Adding API Domains to Whitelist
• Feature Guides
  • Local Glossaries
  • Work Blocker
  • Online Glossaries
    • Online Glossary Library
    • Glossary Writing Guide
    • Creating an Online Glossary
    • Sharing Your Glossary

🤝 Contributing & Feedback

If you find any translation errors, script bugs, or have feature suggestions, feel free to submit feedback via the Issues page!

📄 License

This project is open-sourced under the GPL-3.0 License.

🙏 Acknowledgements

• V-Lipset
• JiangxianEden
• github-chinese
• kiss-translator
• Traduzir-paginas-web
• Read Frog
• AO3: Advanced Blocker
• Google Material Symbols