English

Release Notes

Unreleased

v1.4.0 (2026-04-27)

Improvements

Selection translation now starts from a tiny icon instead of an instant full panel (#102)
- Highlighting text used to pop the entire translate panel right under your selection — handy, but in the way when you were just trying to copy something
- Now you only get a small translate icon next to your selection. Click it and the full panel slides in like before
- Right-click “Translate” and Ctrl+Shift+Y are explicit triggers, so they still open the full panel directly (no extra click)
- Added an i18n key translateSelection (used as the icon’s aria-label / title) across all 11 languages
Localized store description & shortcut hints via the browser’s built-in i18n (_locales/) (#93)
- Replaced manifest.json’s description and commands.*.description with __MSG_<key>__ placeholders and shipped 11 language packs (ar / de / en / es / fr / ja / ko / pt_BR / ru / zh_CN / zh_TW) under _locales/
- Now the description in Chrome Web Store / Firefox Add-ons / Mac App Store / iOS App Store listings and the shortcut hints in chrome://extensions/shortcuts show up in the user’s browser language
- default_locale is en — anything we haven’t translated falls back here
- The Safari Web Extension Xcode project also picks up _locales/ as a build resource

Documentation

English versions of extension descriptions (#91)
- Added docs/chrome-web-store.en.md / docs/firefox-add-ons.en.md / README.en.md
- Targets English-speaking users and overseas distribution on Chrome Web Store / Firefox AMO
Linked the published Firefox Add-ons page from the GitHub Pages landing pages (#94)
- The “Distribution” section in docs/index.md / docs/index.en.md now points to the AMO page instead of saying “coming soon”
Cleaned up release-notes links on the GitHub Pages landing pages so each language only shows its own (#95)
- Dropped the cross-language release-notes link from docs/index.md / docs/index.en.md
- You can still hop between languages from the language toggle at the top of each release-notes page
Added a “Developer” section to the GitHub Pages landing pages (#98)
- New “Developer” section on docs/index.md / docs/index.en.md linking to Orangesoft Inc. and other products (safeAttach / xgate4)

Milestones

Submitted Safari (macOS / iOS) to Mac App Store / iOS App Store (2026-04-25)
- Phase 4 complete (#1). Awaiting Apple review (typically 24–48 hours)
- Submitted build: Safari Build 2 (Marketing Version 1.0)
- Related PRs: #74 (HD icons) / #76 (submission setup) / #82 (App Group fix) / #84 (build number bump)

Bug Fixes

Fixed: API keys and settings not saved on macOS Safari (#81)
- When App Sandbox was enabled in PR #76, the App Group entitlement was missing, so storage.local failed with Disk I/O error
- Added App Group group.jp.co.orangesoft.dualview-translator to both App and Extension to allow access to the shared Container
- Same App Group also added to iOS as a precaution

Improvements

HD app icon for App Store submission (#49)
- Auto-generated all macOS sizes (16–1024) and iOS 1024 from a single 1024x1024 master
- iOS 1024 follows Apple’s recommendation: no baked-in rounded corners (system applies the mask)
- macOS uses a squircle-style rounded corner
- The browser-extension icons (icons/icon{16,32,48,128}.png) are also regenerated from the same master
- Master data saved as assets/app-icon.svg and the regeneration script assets/generate-icons.py
Safari / iOS App Store submission setup (#75)
- Added App Sandbox + Outgoing Connections capability to the macOS App / Extension (required for Mac App Store)
- Removed the alpha channel from the iOS App Store large icon (per Apple’s large-icon requirements)
- Set App Category to Productivity
- Added the encryption export-compliance declaration (ITSAppUsesNonExemptEncryption = NO) to Info.plist
- macOS / iOS Archive Upload to App Store Connect now succeeds
- Verified working on macOS Safari / iOS Safari devices via TestFlight
Privacy Policy published on GitHub Pages (#77)
- Provides a stable public URL required for App Store submission
- Public URL: https://hirokatsuhibino.github.io/dualview-translator/privacy-policy.html

v1.3.0 (2026-04-22)

New Features

New “Rules” tab: auto-translation rules now have their own tab, separate from settings (#50)
- Tab layout: Translate / Rules / Settings
Edit registered auto-translation rules: click an item in the list to edit it in the form below (#50)
- The “Add” button switches to “Update”, and a “Cancel” button appears to exit edit mode
- When the URL pattern, selector, or mode changes, the latest rule is re-evaluated and applied via reapplyAutoRule to already-open pages
Translation cache (#56)
- Caches Google Translate / DeepL results per chunk in chrome.storage.local (key: tc:<engine>:<sl>:<tl>:<hash>)
- Skips API calls for re-translations of the same text → faster, saves DeepL Free character quota, easier on Google’s rate limit
- TTL 30 days / max 2,000 entries (LRU evicts 10% when over the limit)
- Settings tab shows the current cache count and a “Clear cache” button
Summarization cache (#58)
- Caches Claude / Gemini summary results in chrome.storage.local (key: sc:<engine>:<tl>:<hash>)
- Skips paid API calls for re-summarizations → cost reduction + faster responses
- TTL 30 days / max 500 entries (LRU evicts 10% when over the limit)
- The settings tab shows the combined translation + summary cache count
Cache hit rate display (#64)
- Hit rates for translation and summarization shown with progress bars under the cache count in the settings tab
- Hits / misses are persisted in chrome.storage.local and reset when the cache is cleared
- Hidden when there are no accesses yet

Improvements

Switched the summary model to a more cost-effective one: Claude Sonnet → Claude Haiku (about 1/10 the cost) (#62)

v1.2.4 (2026-04-17)

New Features

API key validation: a “Test” button on each of the DeepL / Claude / Gemini API key fields lets you check key validity in one click (#27)
- Shows “✓ Valid” (green) on success or “✗ Invalid” (red) on failure for 3 seconds
- Insufficient balance / rate limit are treated as valid keys

Fixes

Claude model update: replaced the deprecated claude-3-5-sonnet-20241022 with claude-sonnet-4-5-20250514 (#29)
Translation bar display fix: fixed a regression where <strong> tags appeared as literal text after innerHTML→DOM API conversion (#29)
Test button layout: placed the Test button inside the input field on the right so it’s visible without horizontal scroll (#31, #33)

Improvements

PRs required: direct push to main is now disallowed; all changes must go through a PR (#25)

v1.2.3 (2026-04-16)

Fixes

Firefox compatibility: cleared all warnings raised during the Firefox Add-ons submission
- Replaced all innerHTML usages with DOM APIs (createElement, etc.) to clear security warnings
- Moved the popup’s inline scripts to an external file (popup-init.js) for CSP compliance
- Added data_collection_permissions to manifest.json (now required for new Firefox extensions)
- Bumped Firefox minimum version from 109 to 112 (for background.type support)

v1.2.2 (2026-04-16)

Fixes

Double-translation bug fix: fixed an issue where already-translated text could be translated again (#24)

v1.2.1 (2026-04-14)

Fixes

Chrome Web Store review compliance: removed the unused scripting permission from manifest.json

v1.2.0 (2026-04-02)

New Features

Auto-translation rules: auto-translate specific sites and elements via URL pattern + CSS selector (#17)
- The element picker generates a selector from a single click on the page
- Detects URL changes in SPAs (single-page apps) and re-checks
- Dynamic content support (waits up to 10 seconds for elements to appear)
- Webmail-style content rewriting handled (change detection → auto re-translation)
Translation reset: stronger ways to undo translations (#18)
- Added an “×” button at the end of each translated element (per-element reset)
- The popup’s “Reset translations” button now resets both full-page and region translations

Improvements

Drag and resize the selection translation panel: drag the header to move, drag the bottom-right handle to resize (#21)
Disable UI when API key is missing: the summary button and menu are disabled when the LLM API key is missing (#19)
Disable UI when DeepL API key is missing: with DeepL selected and the key missing, translation buttons and the context menu are disabled (#20)
Refactor: extracted magic numbers as constants and consolidated duplicated code (content-page.js 606 → 511 lines)
More tests: added tests for auto-translation rules, waitForElement, and startAutoRuleObserver (171 total)

v1.1.0 (2026-04-01)

New Features

Element selection translation & summary: click an element from the popup to translate it and get an AI summary (#15)
Tabbed popup UI: split into “Translate” and “Settings” tabs so common actions are reachable in one click (#13)
Auto-translate dynamic content: while a full-page translation is active, content added by lazy load or infinite scroll is auto-detected and translated (#14)
Automated tests: introduced 126 unit tests with Vitest + jsdom

Changes

Region selection method changed: from drag-rectangle selection to click-an-element selection. Hovering highlights the target element so you can pick the region intuitively (#12)

Translation modes (8 total)

Mode	How
Selection translation	Drag-select text
Full-page translation	From the popup
Full-page translation & summary	From the popup
Element selection translation	Click an element from the popup
Element selection translation & summary	Click an element from the popup
Right-click translation	Select text, then right-click
Element translation	Right-click (with no text selected)
Element translation & summary	Right-click (with no text selected)

v1.0.0 (2026-03-31)

Initial Release

Dual-view display (original text with translation right below)
7 translation modes (selection, full page & summary, region selection, right-click, element & summary)
2 translation engines (Google Translate / DeepL)
AI summary (Claude / Gemini)
Translation bar (auto-detect foreign-language pages)
Keyboard shortcuts (Ctrl+Shift+T/Y/R)
11-language UI
Auto-following dark / light theme