Release Notes

v1.5.1 (December 2025) - API Burst Test

Introducing API Burst Test, a browser-based HTTP load testing tool for quick API performance checks. All requests originate from your browser—no server proxy required.

New Features

✨ API Burst Test Tool: Simple browser-based load testing
- Load Modes: Total requests (N) or duration (Z seconds) with configurable concurrency
- Rate Limiting: Global QPS or per-worker QPS control
- Metrics Collection: RPS, latency distribution (p50/p90/p95/p99), status codes, error breakdown
- Time Series Charts: RPS, latency, and errors over time visualization
- hey CLI Integration: Copy test configuration as hey command for CLI comparison
- Chrome Extension: CORS bypass and cookie inclusion support
- Export Options: JSON, CSV, and summary copy to clipboard
✨ Responsible Use Safeguards:
- Required acknowledgment before first test execution
- Hard limits: max 6 concurrent connections (HTTP/1.1), 50 (HTTP/2), 10,000 requests, 60s duration
- Collapsible warning banners for responsible use notice and browser limitations
- Clear performance gap warning (5x+ difference vs CLI tools)
✨ API Tester Integration:
- "Send to Burst Test" button in API Tester
- Transfers URL, method, headers, body, and cookie settings

Enhancements

🔧 HTTP/2 Mode: Toggle to increase max concurrency from 6 to 50 (requires server support)
🔧 Beta Badge: Added to tool header indicating experimental status
🔧 Collapsible Warnings: Each warning section (Responsible Use, Browser Limitations) collapses independently
🌐 Full i18n Support: All UI translated to 5 languages (en-US, ko-KR, ja-JP, zh-CN, es-ES)

Technical

Core engine with token bucket rate limiter and concurrent request executor
Metrics calculation: percentiles, histogram buckets, reservoir sampling
Error classification: timeout, CORS, network, aborted, HTTP 4xx/5xx
AbortController for clean test cancellation
Time series data collection at 1-second intervals
New directories: src/tools/api-burst-test/, src/tools/api-burst-test/core/

Privacy & Limitations

🔒 All requests sent directly from your browser (your IP visible to target server)
⚠️ Browser-based: Results may differ 5x+ from CLI tools (hey, wrk, ab)
⚠️ Not suitable for production load testing—use CLI tools for accurate benchmarks
⚠️ HTTP/1.1 limited to 6 concurrent connections per domain (browser restriction)

v1.5.0 (December 2025) - Media Tools: Image Studio & Video Studio

Major release introducing Image Studio and Video Studio tools for browser-based media processing. All processing happens locally in your browser—no data is ever sent to servers.

New Features

✨ Image Studio: Complete image editing pipeline
- Crop: Free ratio, fixed ratios (1:1, 4:3, 16:9), custom ratio support
- Resize: Width/height input, aspect ratio lock, resize modes (Contain, Cover, Stretch)
- Rotate/Flip: 90° rotation, horizontal/vertical flip
- Export: PNG, JPEG, WebP formats with quality control
- Pipeline-based editing: combine multiple operations in one export
- Drag & drop, file picker, and clipboard paste support
- Real-time preview with crop overlay
- Preset management: save, load, export/import presets
✨ Video Studio: Browser-based video editing powered by ffmpeg.wasm
- Thumbnail Extraction: Extract frame at any timestamp as PNG/JPEG/WebP
- Trim: Set start/end times to extract video segments
- Cut (Segment Removal): Remove unwanted portions from video
- Crop: Crop video frame with aspect ratio presets
- Resize: Change output resolution with presets (480p, 720p, 1080p, 1440p, 4K)
- Export: MP4 (H.264) and WebM (VP9) formats with quality presets
- Pipeline-based editing: combine Trim + Crop + Resize in single export
- Progress indicator with cancel support
- Preset management: save, load, export/import presets
✨ Pipeline Workflow: Both tools support combining multiple operations
- Enable/disable individual steps
- Collapsible step panels for cleaner UI
- Step count indicator
- One-click "Run & Export" execution
✨ Preset System: Save and reuse your editing configurations
- Save current settings as named presets
- Load presets to restore configurations
- Export all presets to JSON file
- Import presets from JSON file
- Privacy-first: presets stored locally only

Enhancements

🔧 Pretendard Font: Added as secondary fallback font for better multilingual support
- Font stack: NanumSquareNeo → Pretendard → Inter → system fonts
- Improved rendering for Latin characters when NanumSquareNeo lacks coverage
🔧 HTML lang Attribute: Now dynamically updated based on current locale
- Proper BCP 47 format: en-US, ko-KR, ja-JP, zh-CN, es-ES
- Both static HTML (build) and runtime (SPA navigation) correctly set lang attribute
- Better accessibility and SEO for international users
🌐 Full i18n Support: All Media Tools UI translated to 5 languages
- English (en-US), Korean (ko-KR), Japanese (ja-JP), Chinese (zh-CN), Spanish (es-ES)
- Pipeline, export, and progress status messages all localized
⌨️ Keyboard Shortcuts:
- ⌘/Ctrl + O: Open file
- ⌘/Ctrl + Enter: Run & Export
- ⌘/Ctrl + Shift + R: Reset pipeline
- ⌘/Ctrl + C: Copy to clipboard (Image Studio)
- Esc: Cancel processing

Technical

Image Processing: Canvas API with createImageBitmap() for efficient decoding
Video Processing: ffmpeg.wasm (single-thread core) running in browser
Memory Management: Automatic cleanup of Blob URLs and ffmpeg FS files
Singleton Pattern: ffmpeg instance reused across operations
Progress Tracking: Real-time progress from ffmpeg logs with time parsing
New directories: src/tools/image-studio/, src/tools/video-studio/
Dependencies: @ffmpeg/ffmpeg, @ffmpeg/util, jszip

Privacy

🔒 All media processing happens in your browser
🔒 No files are uploaded to any server
🔒 Presets stored in localStorage only
🔒 Share links contain settings only (no media data)

v1.4.2 (December 2025) - API Response Diff & Locale-specific SEO

Introducing the API Response Diff tool for comparing API responses from two domains, plus locale-specific SEO for better international search visibility.

New Features

✨ API Response Diff Tool: Compare API responses from two domains
- Send identical requests to Domain A and Domain B simultaneously
- JSON response comparison with deep equality (ignoring key order)
- Side-by-side diff view with field highlighting (yellow for different, red for missing)
- Diff table showing only different fields with field path and values
- Response metadata display (Status, Elapsed time, Size)
- Multiple tabs: Body (JSON Viewer), Headers, Raw, cURL
- Domain Presets: Save, load, export/import domain configurations
- Chrome Extension integration for CORS bypass (same as API Tester)
- History management (last 30 executions)
- URL sharing with current configuration
✨ Locale-specific SEO: Language-optimized SEO for all tools
- Tool descriptions and meta tags in 5 languages (en-US, ko-KR, ja-JP, zh-CN, es-ES)
- Each locale's HTML files include localized meta descriptions
- Improved search visibility for international users
- Home page SEO also localized per language

Enhancements

🔧 Updated Tool Descriptions: All tool descriptions refined to highlight main features
🔧 i18n Meta Integration: Build system now imports i18n resources for SEO generation
🔧 Tool ID to i18n Key Mapping: Automatic mapping between tool IDs and i18n keys

Technical

New tool directory: src/tools/api-diff/
Reuses useExtension and Extension mode from API Tester
Comparison utilities: deepEqualIgnoringKeyOrder, findDifferentFields
Domain presets stored in localStorage with export/import support
vite-plugin-generate-routes.ts extended to use i18n for locale-specific SEO
i18n meta.home section added for home page SEO

v1.4.1 (December 2025) - cURL Parser & API Tester Integration

Introducing the cURL Parser tool and enhanced cURL integration with API Tester.

New Features

✨ cURL Parser Tool: Parse and analyze cURL commands
- Paste cURL commands and view structured breakdown
- Request Summary with method and URL
- Query Parameters table with enable/disable toggles
- Headers table with copy functionality
- Cookies section with raw string and parsed key-value table
- Body viewer with JSON pretty formatting
- Options display (follow redirects, compressed, insecure TLS, basic auth)
- Warnings for unsupported features (file uploads, shell variables, config files)
✨ "Open in API Tester" Button: One-click transfer of parsed cURL to API Tester
- Preserves locale prefix (e.g., /ko-KR/curl → /ko-KR/api-tester)
- Automatically fills method, URL, headers, body, and options
✨ API Tester cURL Paste Support: Paste cURL directly in URL input
- Auto-detects cURL commands vs regular URLs
- Automatically parses and fills the form
- Toast notification on success/failure
- "Paste as URL" fallback option on parse failure
- Undo functionality to restore previous state

Enhancements

🔧 JSON Viewer Integration: Values that look like JSON show "Open in JSON Viewer" button
🔧 Clickable URLs: URL values in parsed results are now clickable links
🔧 Collapsible Raw Cookie: Raw cookie section collapsed by default (expandable)
🔧 URL Decode Display Option: Toggle to show URL-decoded values
🌐 i18n: Full internationalization support for cURL Parser (5 languages)

Technical

New cURL parsing library at src/lib/curl/
Shell-like tokenizer with quote handling and line continuation
Supports -H, -d, -X, -b, -F, --data-urlencode, and more
State transfer via sessionStorage for API Tester integration

v1.4.0 (December 2025) - API Tester & Monorepo Architecture

Major release introducing the API Tester tool and migrating to a pnpm + Turborepo monorepo architecture.

New Features

✨ API Tester Tool: Full-featured HTTP client for testing APIs
- Support for all HTTP methods (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)
- Request builder with query params, headers, and body
- Multiple body types: none, JSON, form-data, x-www-form-urlencoded, raw
- Response viewer with syntax highlighting
- HTTP status code with status text display (e.g., "200 OK", "404 Not Found")
- Direct Mode: Standard fetch requests (subject to CORS)
- Extension Mode: CORS bypass via Chrome Extension
✨ Chrome Extension Integration
- Companion extension for CORS bypass
- Permission management per domain
- "Include Cookies" option for authenticated requests
- Extension install button when not detected
- Detailed error view for debugging
✨ Copy as cURL: Export requests as cURL commands

Architecture

📦 Monorepo Migration: Migrated from single-package to pnpm + Turborepo monorepo
- apps/web: Main web application
- apps/extension: Chrome Extension
- packages/shared: Shared types and utilities
- Turborepo for efficient build caching

Enhancements

🔧 Response Viewer: Show HTTP status text alongside status code
🔧 Extension Status Badge: Visual indicator of extension connection
🔧 CORS Modal: Clear guidance on CORS restrictions and solutions
🌐 i18n: Full internationalization support for API Tester (5 languages)
🔀 Resizable Panels in API Tester: Drag to resize request/response panels horizontally
📤 Open in Viewer: Send JSON/YAML responses directly to JSON Viewer or YAML Converter
💾 History Sidebar State Persistence: Remember open/closed state of history sidebar
🔗 Clickable URLs in JSON Viewer Tree: URL strings in tree view are now clickable links

Technical

Uses http-status-codes library for HTTP status text
Extension uses Manifest V3 with Service Worker
Shared types between web and extension via packages/shared

Extension v1.0.1 (December 2025) - API Tester Enhancement

The first feature release of Yowu DevTools Companion Chrome Extension, enhancing the API Tester tool with CORS bypass and cookie handling capabilities.

New Features:

✨ CORS Bypass: Execute cross-origin API requests that would otherwise be blocked by browser security policies
- Requests executed in extension context, bypassing CORS restrictions
- Automatic header modification via declarativeNetRequest API
✨ Include Cookies Option: Optionally include browser cookies in API requests
- Toggle "Include Cookies" checkbox in API Tester (Extension mode only)
- Uses credentials: 'include' for automatic cookie handling
- i18n support for tooltip (all 5 languages)
✨ Permission Management: Granular host permission control
- Explicit permission grant per domain
- Permission caching in localStorage
✨ Error Details View: Detailed error information for debugging
- Collapsible "Show Details" section in response area
- Includes: error code, message, request URL, method, headers

Bug Fixes:

🔧 Fixed "Invalid name" error when sending requests with empty header keys

Technical:

Manifest V3 with Service Worker architecture
Permissions: storage, cookies, declarativeNetRequest
See apps/extension/CHANGELOG.md for full details

v1.3.4 (December 2025) - JSON Viewer & Share UX Improvements

New Features:

✨ JSON Viewer Fullscreen Mode:
- Added fullscreen toggle button next to the copy button
- Right panel expands to full width for better viewing of large JSON
- Press ESC or click toggle again to exit fullscreen
✨ Improved Search UX in JSON Viewer:
- Search input now only appears in Pretty mode (where highlighting works)
- Cleaner UI when using Tree or Minify modes

Enhancements:

🔧 Share Modal on Web:
- Web browser now shows confirmation modal before copying share link (same as mobile)
- Modal displays what data will be included in the shared URL
- Different button text: "Copy Link" (web) vs "Generate Share Link" (mobile)
🎨 Sidebar Design Improvements:
- "More coming soon" badge is now center-aligned
- Added "Suggest a feature" link below the badge
- Links to GitHub Issues for feature requests
⚡ ResizablePanels Optimization:
- Added expandRightPanel prop for fullscreen support
- Reduced resizer padding by 50% for better space efficiency

Technical:

ResizablePanels.tsx: New component for flexible panel layouts with expand support
ShareModal.tsx: Added isMobile prop for button text differentiation
useToolSetup.ts: Updated share logic to show modal on both web and mobile
Sidebar.tsx: Added external link to GitHub Issues
i18n: Added translations for fullscreen, exitFullscreen, copyLink, suggestFeature

v1.3.3 (December 2025) - PWA Update Notification Fix & SEO Optimization

Bug Fixes:

🔧 PWA Update Notification Not Showing:
- Resolved conflict between registerType: 'prompt' mode and skipWaiting/clientsClaim settings
- Update notifications now display correctly in installed PWA after new version deployment
- Optimized configuration based on vite-plugin-pwa official documentation

Enhancements:

⚡ Improved PWA Update Detection:
- Added version.json-based version check (alongside Service Worker)
  - Auto-generate /version.json file at build time
  - Compare server version on app startup for update notification
  - Periodic version check every 5 minutes
- Auto-check for updates when app receives focus (tab switch, window activation)
- Immediate update check when coming back online from offline
- Skip update check when offline (prevents unnecessary errors)
- Uses onRegisteredSW callback (v0.12.8+ recommended approach)
🔍 SEO: Sitemap Priority Optimization:
- Applied priority strategy based on real developer search patterns
- Individual tool pages (en-US): priority 1.0 (search engine top priority)
- Locale tool pages: priority 0.9
- Home pages (all locales): priority 0.8
- Developers search directly for "json formatter", "base64 decode" etc., so tool pages prioritized over homepage
📖 PWA Troubleshooting Documentation Overhaul:
- Explained relationship between registerType option and skipWaiting/clientsClaim
- Added guide for resolving update not reflecting issues
- Added console log meaning explanations
- Added vite-plugin-pwa official documentation links

Technical:

vite.config.ts: Removed skipWaiting and clientsClaim options (prompt mode compatible)
vite-plugin-generate-routes.ts:
- Auto-generate version.json at build time
- Defined sitemap priority constants (TOOL_PRIORITY, TOOL_LOCALE_PRIORITY, HOME_PRIORITY)
usePWA.ts: Version-based update check + Service Worker update check in parallel
docs/PWA_TROUBLESHOOTING.md: Complete documentation overhaul

References:

v1.3.2 (December 2025) - Cron Parser Advanced

A major Cron Parser enhancement supporting various cron dialects with accurate semantics parsing and improved UI/UX.

New Features:

✨ Multi Cron Spec Support:
- Auto (recommended): Auto-detect by analyzing input
- UNIX/Vixie: Standard 5-field, DOM/DOW OR rule clarification
- UNIX + Seconds: 6-field (includes seconds)
- Quartz: 6-7 fields, ? L W # advanced operators support
- AWS EventBridge: cron(...) wrapper + year field
- Kubernetes CronJob: @hourly, @daily macro support
- Jenkins: H hash token and alias support
✨ Wrapper Normalization:
- Auto-extract from cron(...), cron('...'), cron("...")
- Remove leading/trailing whitespace/newlines/text
- Display "Normalized" and "AWS format"
✨ Field Breakdown + Highlighting:
- Display cards for Minutes / Hours / DOM / Month / DOW / (Year/Seconds)
- Color/underline highlighting for input tokens
- Mutual highlighting on hover (mobile: tap)
- Badge display for L/W/#/?/H special tokens
✨ Enhanced Next Runs Calculation:
- "From" base time setting (useful for debugging)
- Copy buttons for ISO / RFC3339 / Epoch formats
- Web Worker to prevent UI freezing

Enhancements:

🔧 Semantics Clarification:
- UNIX/Vixie: Explicit DOM/DOW OR rule (not AND!)
- AWS/Quartz: DOM/DOW simultaneous specification constraint validation
- Differentiated error messages per spec
⚠️ Automatic Compatibility/Warnings:
- UNIX/Vixie: DOM/DOW OR warning
- Jenkins: H/3 short period end-of-month irregularity warning
- AWS: Format/limitations/TZ/DST characteristics
- K8s: TZ= not supported, .spec.timeZone recommended
🔄 Conversion Feature (optional):
- UNIX(5) ↔ UNIX+Seconds(6)
- UNIX(5) → AWS (cron(...))
- Clear warnings for non-convertible/non-equivalent expressions

Technical:

Separate parser modules per spec (src/tools/cron/parsers/)
Auto-detection logic (wrapper, special tokens, field count based)
Offload next-run calculation to Web Worker
Add i18n translation keys (tool.cron.spec.*, tool.cron.field.*, tool.cron.warning.*)

Dependencies:

Library	Purpose	Notes
`cron-parser` (existing)	Next run time calculation	UNIX 5/6 fields
`cronstrue` (existing)	Human-readable description	i18n support
`croner` (under review)	Quartz advanced syntax	`L W # ?` support

Spec Verification:

✅ UNIX/Vixie DOM/DOW OR rule: man7.org
✅ Quartz ? required rule: quartz-scheduler.org
✅ AWS EventBridge constraints: docs.aws.amazon.com

v1.3.1 (December 2025) - Code Quality & Bug Fixes

Bug Fixes:

🔧 JWT Encoder: Fixed HMAC algorithm (HS256/HS384/HS512) not showing results
- Corrected conditional logic that prevented signToken() from being called

Refactoring:

🏗️ New Custom Hooks:
- useToolSetup: Combines useTitle and useI18n for consistent tool setup
- useLocalStorage: Generic localStorage hook with cross-tab/component sync
🎨 New Common Components:
- ModeToggle: Reusable mode toggle button group (URL, Base64, Diff tools)
- ResultPanel: Consistent result display with copy button
🌐 i18n Improvements:
- ShareModal now fully internationalized
- Added ShareModal-related translation keys to all locales
⚡ Performance Optimizations:
- Static route generation in App.tsx (moved outside component)
- Reduced re-renders from route definitions
🗑️ Code Cleanup:
- Removed deprecated shareState function from useToolState
- Simplified useFavorites and useRecentTools with useLocalStorage
- Added i18nKey field to ToolDefinition for explicit i18n mapping
- Added getToolI18nKey helper function

Technical:

Refactored localStorage hooks to use common useLocalStorage abstraction
Improved code organization with consistent patterns across tools
Better separation of concerns in tool components

v1.3.0 (December 2025) - i18n Internationalization

New Features:

✨ Multi-language Support: Full internationalization support
- Supported languages: English (en-US), Korean (ko-KR), Japanese (ja-JP), Chinese (zh-CN), Spanish (es-ES)
- Language selection dropdown in sidebar (above theme toggle)
- Automatic language detection: URL → localStorage → browser language → en-US fallback
- Language-specific URLs: /{locale}/{tool} (e.g., /ko-KR/json)
- All UI strings referenced from i18n resources (no hardcoded strings)
- Type-safe translations with satisfies I18nResource
🎨 NanumSquareNeo Font: Beautiful Korean-optimized variable font
- Variable font support (weight 300-900)
- Better readability for CJK characters

Enhancements:

🌐 i18n Infrastructure:
- Custom React Context-based i18n implementation
- i18n resource files: src/i18n/{locale}.ts
- Namespace structure: common.*, sidebar.*, commandPalette.*, homepage.*, pwa.*, tool.{slug}.*, meta.{slug}.*
- Type-safe translation keys (TypeScript satisfies keyword)
- Missing key fallback to en-US
🔗 URL/Routing:
- Language prefix in URLs: /{locale}/{tool}
- Maintain current tool when changing language
- Preserve URL fragments (share payload) when changing language
- Sidebar, HomePage, CommandPalette all use locale-aware navigation
🏗️ Build System:
- Generate language-specific HTML files for each tool and locale combination
- Language-specific meta tags (title, description, Open Graph, Twitter Card)
- Extended sitemap.xml with language-specific URLs
- Each HTML has proper <html lang="{locale}"> attribute
💾 Storage:
- Language preference saved to localStorage (yowu-devtools:common:locale)
- Restore language preference on app reload
- Language selection persists across sessions

UI/UX Improvements:

🔐 Hash Generator: Default algorithm changed to SHA-256
📱 PWA Install Prompt: Updated color scheme to blue theme
🆔 UUID Generator:
- Simplified title (UUID/ULID → UUID)
- Improved UI with type descriptions and "Copy All" button
📝 YAML Converter: Left/right panels now have consistent heights
📊 Text Diff: Copy icon moved to right side for better UX
🔑 JWT Encoder: Default algorithm changed to "None"
🔤 Regex Tester: Pattern descriptions now support i18n (47 patterns)
📅 Cron Parser: Human-readable descriptions now localized via cronstrue
⭐ GitHub Stars Badge: Added to main page footer

Improvements:

🌍 Better accessibility for international users
🔍 Improved SEO with language-specific pages
📱 Consistent UI experience across all languages
🎨 Language selector UI in sidebar

Technical:

Custom React Context-based i18n implementation (no external library)
Extended vite-plugin-generate-routes.ts for language-specific HTML generation
useI18n hook with t() function and setLocale() method
buildLocalePath() utility for locale-aware URL construction
i18n utilities: getLocaleFromUrl, getStoredLocale, getBestMatchLocale
Build-time type checking ensures translation key consistency

v1.2.1 (December 2025) - Regex & Hash Enhancement

New Features:

✨ Regex Tester: Test and visualize regular expressions
- Pattern matching with visual highlights (full matches and capture groups)
- Named capture groups support ((?<name>...))
- Group-specific color coding (same group = same color across matches)
- Replacement preview with $1, $2, $<name> support
- Flags toggle (g, i, m, s, u, y, d, v)
- Match list panel with click-to-scroll functionality
- Performance protection (debounce, backtracking warnings)
- JavaScript RegExp engine (browser-native)

Enhancements:

🚀 Hash/HMAC Generator Improvements:
- File hash support: Calculate hash for files (drag & drop or file picker)
- Base64URL encoding option added (hex, base64, base64url)
- HMAC key encoding options (raw-text, hex, base64)
- Random key generation button (WebCrypto generateKey)
- HMAC verification section: Enter expected MAC → shows match status (OK/Fail)
- File metadata display (name, size, lastModified)
- Processing status indicator (loading spinner, progress for large files)
- Security enhancement: HMAC keys are NOT saved to share links/localStorage by default
- Algorithm cleanup: SHA-256 and SHA-512 only (removed MD5, SHA-1, SHA-384)

Improvements:

🔒 Enhanced security for HMAC keys (not shared by default)
📁 File-based workflow for hash calculation
🎨 Better visual feedback for regex matches and groups
⚡ Performance optimizations for regex testing
📤 Improved Web Share API text formatting
- Professional share message format with title, privacy message, and URL
- Better control over share text order (title → privacy → URL)
- Cleaner messaging without celebratory wording

Technical:

Extended Hash tool state schema for file support
Regex tool implementation with overlay highlighting
HMAC key security policy implementation
File reading via file.arrayBuffer() API

v1.2.0 (December 2025) - Power-user Release

New Features:

✨ Command Palette: Fast tool navigation with ⌘K / Ctrl+K
- Search tools by title or keywords (Fuzzy search)
- Quick actions: Navigate, toggle favorites, access recent tools
- Mobile support: "Search" button in header
✨ File Workflow: Drag & drop and file download support
- Drag & drop files or use file picker to load input
- Download results as files (.json, .yml, .txt, etc.)
- Available in JSON, YAML, and Diff tools
- Worker response ordering guaranteed with requestId for large files
✨ Enhanced Share: Improved sharing experience
- Shows what data is included in share links
- Web Share API support for mobile devices
- Enhanced privacy warnings for sensitive tools (JWT)
- URL schema versioning for compatibility
✨ PWA Polish: Complete PWA installation experience
- All 8 tools added to shortcuts
- Screenshots for desktop and mobile
- Improved update notifications and refresh prompts
✨ Version Display: App version shown in sidebar footer
- Build-time version injection from package.json
- Version synchronization between package.json and service
✨ New Tools:
- Hash Generator: SHA-256, SHA-1, SHA-384, SHA-512, HMAC support (WebCrypto API)
- UUID/ULID Generator: Generate UUID v4/v7 and ULID with batch generation (up to 100 IDs)
- URL Parser: Parse and visualize URL components (protocol, host, path, fragment, query parameters) with decoding options and array parameter support

Improvements:

🎯 Better keyboard navigation with Command Palette
📁 File-based workflow for faster iteration
🔒 Enhanced privacy controls and warnings
📱 Better mobile sharing experience
🎨 Improved PWA installation and update UX
📊 Version tracking and release notes

Technical:

Extended ToolDefinition with keywords and category fields
Worker response ordering with requestId to prevent race conditions
Web Share API integration with clipboard fallback
Build-time version injection via Vite environment variables
CHANGELOG.md for Git tag-based release notes

v1.1.1 (December 2025)

Bug Fixes:

🔧 Fixed HS384 and HS512 signature verification issues in JWT tool
- Improved signature encoding for large arrays
- Fixed buffer range handling in signature verification
🔧 Fixed JWT encoding algorithm handling
- Header's alg field now takes precedence over separate algorithm selector (JWT standard compliance)
- Algorithm selector automatically updates header JSON for convenience

Improvements:

🎨 Improved Toast notification styling for dark mode
- Toast notifications now match project's color scheme (gray-800 background, gray-700 border)
- Consistent with other UI elements in dark mode

Technical:

Enhanced Base64URL encoding/decoding for better compatibility
Improved error handling in JWT signature generation

v1.1.0 (December 2025)

New Features:

✨ Enhanced Sidebar: Recent tools list and favorites for quick access
✨ JWT Tool: Decode and encode JSON Web Tokens with signature verification
✨ Web App Support: Install as a Chrome app with PWA features
- Automatic updates with user-friendly prompts
- Offline caching with Service Worker
- Install prompt for easy app installation
✨ Performance Improvements: Web Workers for large data processing
- JSON parsing for files > 1MB or 10,000+ lines
- Text diff calculation for large comparisons
- YAML conversion for large files

Improvements:

🎨 Improved offline fallback page design
🔔 Update notifications when new versions are available
📱 Better mobile experience with PWA support
⚡ Faster processing of large datasets without UI freezing

Technical:

Migrated to vite-plugin-pwa for better PWA support
Added useWebWorker hook for reusable Worker logic
Enhanced caching strategies (Network First, Cache First)
Improved Service Worker management with automatic updates

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Release Notes

v1.5.1 (December 2025) - API Burst Test

New Features

Enhancements

Technical

Privacy & Limitations

v1.5.0 (December 2025) - Media Tools: Image Studio & Video Studio

New Features

Enhancements

Technical

Privacy

v1.4.2 (December 2025) - API Response Diff & Locale-specific SEO

New Features

Enhancements

Technical

v1.4.1 (December 2025) - cURL Parser & API Tester Integration

New Features

Enhancements

Technical

v1.4.0 (December 2025) - API Tester & Monorepo Architecture

New Features

Architecture

Enhancements

Technical

Extension v1.0.1 (December 2025) - API Tester Enhancement

v1.3.4 (December 2025) - JSON Viewer & Share UX Improvements

v1.3.3 (December 2025) - PWA Update Notification Fix & SEO Optimization

v1.3.2 (December 2025) - Cron Parser Advanced

v1.3.1 (December 2025) - Code Quality & Bug Fixes

v1.3.0 (December 2025) - i18n Internationalization

v1.2.1 (December 2025) - Regex & Hash Enhancement

v1.2.0 (December 2025) - Power-user Release

v1.1.1 (December 2025)

v1.1.0 (December 2025)

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RELEASE_NOTES.md

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RELEASE_NOTES.md

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Release Notes

v1.5.1 (December 2025) - API Burst Test

New Features

Enhancements

Technical

Privacy & Limitations

v1.5.0 (December 2025) - Media Tools: Image Studio & Video Studio

New Features

Enhancements

Technical

Privacy

v1.4.2 (December 2025) - API Response Diff & Locale-specific SEO

New Features

Enhancements

Technical

v1.4.1 (December 2025) - cURL Parser & API Tester Integration

New Features

Enhancements

Technical

v1.4.0 (December 2025) - API Tester & Monorepo Architecture

New Features

Architecture

Enhancements

Technical

Extension v1.0.1 (December 2025) - API Tester Enhancement

v1.3.4 (December 2025) - JSON Viewer & Share UX Improvements

v1.3.3 (December 2025) - PWA Update Notification Fix & SEO Optimization

v1.3.2 (December 2025) - Cron Parser Advanced

v1.3.1 (December 2025) - Code Quality & Bug Fixes

v1.3.0 (December 2025) - i18n Internationalization

v1.2.1 (December 2025) - Regex & Hash Enhancement

v1.2.0 (December 2025) - Power-user Release

v1.1.1 (December 2025)

v1.1.0 (December 2025)