Release Notes
Follow every step of our journey, from the very first launch to a full-featured subtitle platform
- Major Update
Voice Cloning Launched — Make Dubs With Your Own Voice
New Features- New Voice Cloning feature — Upload a sample of your voice, the system learns your voice fingerprint and uses it for any future dubbing
- Privacy-first design — Your voice belongs only to you, never used for model training, never sold, encrypted storage
- Free demo page — Try voice cloning once without signing up, hear the sample immediately
- Dedicated voice cloning intro page — Full explanation of how it works, privacy protections, and popular use cases (preserving a loved one's voice, audiobooks, podcasts, branded virtual hosts, and more)
- One-click jump from the cloning page straight to the voice studio — your new voice and matching language are pre-selected so you can try it right away
- Voice studio default switched to audio-only mode — short video panel is no longer forced, cleaner interface, faster to get started
- Usage stats added to homepage and voice studio — see how much voice content has been generated on the platform
- Free-plan voice limits now shown on the pricing page — 500 chars per generation, 3 generations per month
Fixes- Fixed wrong share image showing on multilingual blog articles
- Fixed scroll-counter animation only triggering on page load instead of when scrolled into view
Voice Studio Improvements — Audio-only Mode + Smarter Transcription
New Features- New audio-only mode in the voice studio — skip the short video when you only need audio, generates faster
- Glossary hints for transcription — add proper nouns, names, and brands when uploading (e.g. "Hung Wan, Ah Fai") to reduce errors with English and technical terms
- Confidence indicator — colored bar in front of each subtitle line helps you spot what needs review
- New ghost-story short video example added to the homepage hero — see text-to-video in action
Fixes- Fixed browser still showing old version after voice regen
- Fixed background image not being replaceable on regen
- Fixed server restart accidentally wiping subtitle text
- Fixed final-line hallucination caused by silent tail being misinterpreted
- Fixed Traditional Chinese voice language sometimes producing Mandarin tones
- Major Update
Text to Video Launched — One Text Input Generates Voice + Short Video
New Features- New Text to Video feature — Every text input now generates both audio and a vertical short video, complete with a looping background ready to upload directly to IG Reels, YouTube Shorts, and TikTok
- Custom short video background — Use the default or upload your own photo (up to 10 MB)
- Blinking top headline — Customize bold text (e.g. "Limited Free") for eye-catching visuals
- Brand watermark toggle — Paid plans can hide the bottom-right watermark
- Animated voice indicator — An animated icon is automatically added to the center of the short video, signaling to muted viewers (IG Reels / Shorts) that audio is present
- Voice library redesigned — Each creation now has separate audio and short video buttons. Desktop shows full download and share options; mobile simplifies to one-tap share (pick "Save to Photos" or send straight to IG Reels)
- Brand-new guided tour — Step-by-step walkthrough of the new library and studio layout, beginner-friendly
- Homepage top banner carousel — Subtitle editor, AI voice cast, and education plans take turns in the spotlight
- Education page copy refreshed — Doubles down on Cantonese AI voice positioning
Fixes- Fixed 404 on login / register pages when switching languages
- Fixed Traditional Chinese captions using Cantonese colloquial terms — now unified to formal written Chinese
- Fixed slow processing of large photo uploads for short video backgrounds (auto-compressed to save storage)
- Fixed garbled or missing characters in short video headlines on the server (automatic font fallback)
New Comparison Article + Free Plan Adjustment
New Features- New blog article — Hey Subtitle VS Subanana full comparison, breaking down pricing, processing speed, and features to help you choose the right tool
- Homepage tagline updated — revised to "2x Cheaper, 8x Faster" based on latest data
Fixes- Free plan monthly quota adjusted to 5 minutes — due to rising AI transcription and proofreading costs, the free quota has been adjusted from 10 to 5 minutes per month. New users still receive a 15-minute welcome gift, and paid plans are not affected
Education Page Launch + Translation Speedup + CEO Card QR Bonus
New Features- New education page — AI dubbing solutions for teachers and educators, 4 locales
- CEO business card QR bonus — received a card at an event? Scan to claim free minutes instantly
- Translation engine speedup — proofreading and translation now run in parallel, significantly faster
- Translation quality guard upgrade — auto-retries when abnormal blank results detected, reducing missed translations
- Brand new landing page copy — cheapest & fastest positioning, see how we compare at a glance
Fixes- Fixed occasional wrong language display after switching languages
- Fixed promo overlay UX — now dismissible + remembers already-redeemed state
- Fixed promo overlay register/login link redirect issue
- Fixed ad tracking parameters lost when switching languages
- Fixed education page feature card height inconsistency
- Fixed missing page animations on some pages
Transcription Now 18x Faster! Nav Fix + AI Dubbing Guard
New Features- Transcription engine upgrade — multi-endpoint parallel processing, up to 18x faster
- New post-login hub page + secondary navigation bar for better navigation
- Google avatar sync + breathing pulse animation on account icon
- New blog article: No Audio in Your Video? AI Dubbing in 5 Minutes
Fixes- Fixed nav bar links overlapping on iPad portrait / iPhone landscape (breakpoint adjusted from 768px to 1024px)
- Fixed dubbing timeout issue (timeout extended to 180 seconds)
- Fixed dubbing language setting not being applied + added retry button
- Fixed retry button incorrectly shown after AI content moderation rejection
- Fixed empty subtitle lines causing dubbing errors — batch dubbing auto-fills silence, single-line re-dub shows error overlay
- Fixed search icon overlap + auto scroll-to-top on pagination
- Fixed account page card style inconsistency
- Fixed secondary nav bar layout on mobile
- Fixed nav bar link centering + Japanese text wrapping
- Fixed blog CTA buttons causing 404 in non-default locales
- Fixed duplicate brand suffix in Voice Studio SEO title
Redesigned Upload Page, Clearer Error Messages
New Features- Redesigned upload page — File upload and YouTube URL are now separate tabs for a cleaner experience; YouTube copyright notice is now shown inline instead of a pop-up
Fixes- Fixed AI content policy errors now showing a dedicated "Content Filtered" message instead of a generic error
- Fixed detection of videos with no audio track — now shows a specific "No audio stream" error message
Upload Tips Upgraded, Share Voice Previews Instantly
New Features- Voice preview sharing — After previewing AI voices in Voice Studio or the text-to-speech page, share audio clips with friends via WhatsApp, AirDrop, Email, and more
- Email notification system — Stay informed with system notifications so you never miss important updates
- Upload tips revamped — Added guidance on background music handling, vocal isolation tools, and AI content review — a must-read before your first upload
- Improved error reporting and handling — Enhanced error detection, tracking, and real-time alerts so our team can respond faster
- New article — Claude Code Dev Diary: Building an AI Subtitle SaaS from Scratch in 38 Days
Fixes- Fixed subtitle text drifting in certain scenarios
- Improved stability for YouTube video link uploads
- Fixed account page not syncing unsubscribe status in real time
Editor Evolved — Merge Subtitles with Ease
New Features- Merge subtitles — combine adjacent subtitle lines with one click, auto-handling text joining and timecode expansion
- TTS usage tips — added voice quality improvement hints in dub prep, TTS generator, and Voice Studio
- Maintenance page — service pauses safely during maintenance, in-progress work unaffected, resumes smoothly after
- TTS dubbing comparison added to pricing — see dubbing features across all plans at a glance
- New article — AI dubbing showcase: 8 voice actors x 4 languages full demo
- Major deployment infrastructure upgrade — staging environment, phased releases, and automated deployment for stable updates
Fixes- Fixed Cantonese TTS demo producing unnatural accent
- Major Update
Dubbing, Down to Every Last Second
New Features- New Voice Studio showcase page — preview all AI voices and hear them in action
- Pre-dubbing cost confirmation — see estimated minutes and storage before you commit, with automatic alerts when balance is low
- Per-line re-dubbing — re-dub individual segments you're not happy with, showing actual deduction
- Translation and dubbing queue system — handle multiple jobs simultaneously without bottlenecks
- New English and Mandarin AI voices
- Exclusive voice clones — private voice models assigned to specific users
- Auto-pad dubbing audio — dubbed tracks automatically match original video duration
- Precise billing — charged in 0.1-minute increments, pay only for what you use
Fixes- Full server tuning — HTTP/2 multiplexing, Brotli compression, long-term static asset caching, TLS 1.3 encryption, building a high-performance foundation from the ground up
- Dubbing panel redesign — theme colors, button layout, audio file download
- Fixed conflicts when multiple dubbing jobs run simultaneously
- Minutes display now consistently rounded to 1 decimal place
- Fixed provider routing error when re-dubbing
- Prerender acceleration — page reuse and batch parallelism
- Major Update
Words, Now With Soul
New Features- Our voice synthesis experiment is complete — a unified voice library with 13 AI voices across Cantonese, Mandarin, English, and Japanese
- Standalone text-to-speech: type any text and generate expressive speech, no video upload needed
- AI emotion tag system — AI automatically analyzes text sentiment, injecting laughter, sighs, whispers, and more to give every sentence a soul
- Emotion tag toolbar for manual fine-tuning of tone and expression
- All-in-one voice studio: choose language, type text, pick a voice, and generate — all on one page
- Interactive guided tour for beginners to get started quickly
Fixes- Fixed missing subtitles at the end of long audio — when the speaker finishes their last sentence, AI may terminate transcription early; now auto-detects and rescues dropped tail segments
- Fixed pricing page display error
- Improved prerender timeout handling
- Major Update
Standalone Text-to-Speech Feature
New Features- Brand new standalone text-to-speech feature with 6 Cantonese AI voices
- Smart emotion tag system — AI automatically analyzes text sentiment and injects tone control
- Text-to-speech studio: an all-in-one workspace to type and generate speech
- Guided tour for text-to-speech, easy for beginners to get started
Fixes- Fixed missing subtitles at the end of long audio — when the speaker finishes their last sentence, AI may terminate transcription early; now auto-detects and rescues dropped tail segments
- Fixed pricing page display error
- Improved prerender timeout handling
- Blog article cover images now display in original aspect ratio
Dubbing Interface Redesign
New Features- Video list now groups by language — one row per language for a clearer overview
- New unified dubbing panel with all dubbing actions in one place
- Export directly from the video list without entering the editor
- Streamlined icon-only action buttons for a cleaner interface
Fixes- Improved dubbing panel button layout on mobile
- Fixed dub prep button state detection
- Fixed voice name display issues
- Fixed duplicate entries in translation modal
- Major Update
AI Dubbing Engine — Complete Overhaul
New Features- Rebuilt the dubbing engine from the ground up for better audio sync and more voice options
- Per-segment voice regeneration: re-generate a single subtitle's audio without redoing the entire dub
- Speed detection indicator: segments that were sped up now display the tempo ratio
- Added 3 new international voices (Itsuki, Zara, Brittney) — voice library expanded to 9
- Dubbing costs reduced with a new TTS billing architecture
- Interactive dubbing guide tours: dub prep (3 steps) and dub mode (4 steps)
- Dub prep can now be started from any translated version
- Terms of Service updated: added Prohibited Content policy and Account Termination clauses
Fixes- Significantly improved dubbing audio timing accuracy — eliminated cumulative drift from multi-segment assembly
- Fixed missing space between merged segments in preMerge for non-CJK languages
- Fixed badge vertical alignment on video listing cards
- Unified minutes display to 1 decimal place across nav bar and usage page
- Paid dubbing translations no longer double-count against translation quota
KOL Testimonials, Email Overhaul & Subscription Fixes
New Features- New creator testimonials carousel on Landing Page: AP人生, Line姐, and founder
- Email system overhaul: redesigned Welcome email + Upgrade/Downgrade/Cancel/Referral reward emails with tutorial cards and feedback buttons
- Referral reward email: both subscriber and referrer now receive notifications
- Minute pool descriptions now show plan name, referral code, and promo code sources
- New blog #13: comprehensive subtitle tool comparison with table display
Fixes- Fixed checkout page blank screen issue
- Fixed subscription page showing incorrect plan names
- Fixed cancel button hidden during pending downgrade
- Fixed stale downgrade schedule remaining after upgrade
- Minute pool descriptions now use multi-language plan names instead of English names
Universal Subtitle Splitting & Dubbing Improvements
New Features- Universal subtitle auto-splitting for all languages: unified silence detection + smart sentence breaking, no longer relying on space-based tokenization
- New blog articles: complete AI subtitle tool tutorial and AI dubbing + YouTube multi-language audio guide
- Blog content now dynamically displays the latest welcome bonus and free minutes
Fixes- Fixed English subtitle split timestamp offset caused by space characters
- Disabled AI dubbing voice cloning, switched to standard voice library for better accent accuracy
- Unified all email template brand colors and forced light mode to prevent dark mode color shift
- Increased AI dubbing API timeout to prevent long video dubbing interruptions and wasted credits
Segment Splitting & Notification Enhancements
New Features- New "Split Segment" feature in editor: split subtitles at cursor position with proportional time allocation
- Real-time Telegram notifications for new user registrations (includes sign-up method and locale info)
- Guide tour state migrated to cloud storage for cross-device sync
- New blog post: YouTube URL upload tutorial
Fixes- Fixed YouTube player seek polling issue
- Fixed SEO prerender duplicate DOCTYPE and unnecessary styles
- Fixed per-locale brand name display in page titles
- Fixed browser favicon cache not updating
- Fixed welcome email CTA button not visible in some email clients
Interactive Guide & UX Improvements
New Features- New interactive guided tour: automatic Spotlight walkthrough on first visit, covering homepage, upload page, and editor with 20+ steps
- Reset the tour anytime from account settings to re-experience it
- Admin LLM logs now display source and target language in separate columns
Fixes- Fixed language preference not being saved during registration
- Improved audio processing stability for online video dubbing
- Enhanced retry reliability for online video processing
- Fixed language field display in admin logs
Multi-Language Website
New Features- URL-based language switching across 4 languages (Traditional Chinese / English / Simplified Chinese / Japanese)
- Japanese interface support added
- Automatic browser language detection and redirect
- 4-language email templates (verification and welcome emails)
- Language-specific social sharing images
- Currency notes added to pricing and checkout pages
- Multi-language SEO tags for global search engine indexing
- 72 pre-rendered static pages for faster loading
- Added disclaimer, copyright confirmation and thumbnail copyright overlay for online video uploads
- Desktop subtitle editor now supports fullscreen mode
- About page enriched with brand story and team introduction
- Added release notes page with timeline UI
Fixes- Mobile pricing comparison table now supports horizontal scrolling
- Checkout page terms display and styling unified
- Improved stability and security for online video processing
- Optimized online video processing server architecture
- Added online video processing status monitoring to admin dashboard
Promo & Referral System
New Features- Promo code system (enter a code to receive free minutes)
- Refer-a-friend rewards program (tiered rewards based on subscription plan)
- Referral management page (track referral results and rewards)
- Admin code management interface (create and edit promo and referral codes)
- Homepage promo code showcase area
- Referral plan comparison added to pricing page
- Referral rewards section added to service page
- Blog article about the referral rewards program
Fixes- Premium user referral link display issue
Online Video Upload & Video Editor Export
New Features- Paste a video URL to transcribe directly (no download needed)
- Online videos play directly in the editor
- Online videos also support AI dubbing
- Final Cut Pro subtitle export format (FCPXML) with custom resolution and frame rate
- Server infrastructure upgrade (more computing power and memory)
- Online video subtitle feature added to service and pricing pages
- Pricing comparison table fully updated with all features
- Video thumbnails cached locally for faster loading
- Video preview encoding speed doubled
- Full error message localization
- All 5 admin pages now support multiple languages
- Video list delete experience redesigned
Fixes- Dual-track audio switching issue when dubbing online videos
- Accidental edit panel trigger on mobile blank areas
- Admin dashboard online users timezone display error
AI Dubbing
New Features- AI voice dubbing launched (automatically clones original voice, preserving tone and emotion)
- Dubbing automatically aligned to original timeline
- Multiple translation versions per language (e.g., multiple English versions for separate editing)
- Dubbing audio files downloadable directly (MP3 format)
- Editor supports one-click toggle between dubbed and original audio
- Admin dashboard adds dubbing analytics and storage tracking
- Pricing, service, terms, and privacy pages updated with dubbing content
- Competitor feature comparison table
- Dubbing feature blog article
- Video loading progress indicator
- Upload page hints consolidated into a unified tip area
Fixes- Dubbing language parameter error
- Failed translation jobs can now be manually deleted
- Video list badge sizes unified
Unified Navigation & Content Enhancements
New Features- Unified navigation bar across all pages (consistent experience)
- Translation quota system (per-video limits based on subscription plan)
- Social media accounts created (YouTube / Instagram / Threads)
- Navigation menu reorganized (different options before and after login)
- FAQ moved to bottom of issue report page (easier self-service)
- Social media links added to footer
- Mobile subtitle tutorial blog article
- Welcome email now includes tutorial video thumbnail and link
- Pricing comparison table fixes with multilingual plan names
- Upload page resolution recommendation hint added
- Security hardened (rate limiting and privacy policy updates)
Fixes- Page content and footer spacing issue
- Pricing page alignment issue
- Admin dark mode color adjustments
SEO & Storage Optimization
New Features- Search engine pre-rendering (static public pages for faster loading and indexing)
- Product tutorial videos produced
- Three-step pre-upload validation (file size, remaining minutes, storage estimate)
- File size display with icons added to video list
- Storage card moved to usage page (alongside minute balance)
- Pricing page fully redesigned (including terms and privacy layout)
- Social media blog article with embedded video
- Article list now sorted by publish date
- Video preview quality adjusted to 360p (significantly saves storage)
- Thumbnail size optimized (saves bandwidth)
- Audio temp files automatically cleaned after transcription
Fixes- SEO language detection priority fix
- Dark mode search highlight contrast insufficient
- Mobile menu not closing after language switch
Dark Mode & Multiple New Features
New Features- Dark mode launched (6th theme, dark purple tone)
- Emerald green theme replaces old purple theme
- Service introduction page (full feature overview)
- Issue report page (user feedback collection)
- Pagination for all listings (video list, transactions, etc.)
- Analytics tracking (page views and feature usage statistics)
- Unique title and description for each page (improves search indexing)
- Branded welcome email (sent automatically to new users)
- 404 page (friendly message when lost)
- Bilingual toggle button (view original and translated subtitles side by side)
- Mobile subtitle area breathing space optimized
- Social sharing image with larger logo and text
- Step-by-step tutorial blog article with 11 screenshots
- Homepage layout redesigned (cleaner layout)
Fixes- Mobile share URL canonical tag update issue
- Email logo white edge issue
Subtitle Editor Major Overhaul
New Features- Subtitle editor completely redesigned (theme colors, playback controls, mobile scroll optimization)
- Subtitle editing now uses popup panels (compatible with all phones and tablets)
- Adding a subtitle row automatically opens the edit panel
- Edit panel shows surrounding context lines (easier to edit with context)
- Timecodes merged into a single pill button (cleaner look)
- Current playback line highlighted with border
- Logo converted to vector format (crisp at any size)
- SEO basics added (keywords, structured data, social sharing cards)
Fixes- Video freeze when editing subtitles
- Logo color error on login page
- Login page gradient not following theme switch
Pricing Revamp & Visual Upgrade
New Features- Pricing page, homepage, and admin dashboard fully redesigned
- Storage limit mechanism launched
- New favicon icon set (supports all device sizes)
- New social sharing preview image
- Brand name full-width display
- Support email card added to contact page
- Major Update
Subscription Plans & Rebrand
New Features- Four subscription plans launched (Free, Basic, Pro, Premium)
- Monthly and annual billing options
- Automatic credit for remaining days when upgrading
- Seamless auto-switch when downgrading (no service interruption)
- Full rebrand to "Hey Subtitle"
- New domain heysubtitle.com purchased and migrated
- Brand new homepage design
- New logo design (French Bulldog icon)
- Blog system launched (multiple tutorial and feature articles)
- About Us page
- VTT subtitle export format
- Sitemap submitted to search engines (faster indexing)
- Social sharing preview image
- Auto scroll-to-top on page navigation
- 10+ new languages for voice transcription (auto-detect source language on upload)
- Free plan includes complimentary minutes
- New users can upload immediately after registration
Fixes- Subscription payment security fixes (4 items)
Official Launch & Account Management
New Features- Website officially deployed and open to the public
- Domain hkautomatic.com purchased and server configured
- Email verification system launched
- Google account one-click login
- Error and log management system (automatic recording and tracking)
- Admin dashboard launched (system monitoring, error logs, user management)
- User management features (upload permission control, user suspension and deletion)
- Email verification code login (more secure login experience)
- Account deletion feature (users can delete all their data)
- Unused data auto-cleanup (saves storage space)
Fixes- Pre-launch security comprehensive fix
- Email verification code sending issue
Design Refresh & Multi-Language
New Features- Complete visual design refresh (modern new look)
- Traditional Chinese, English, and Simplified Chinese interface
- Full mobile adaptation (all features work on mobile)
- Comprehensive security hardening
- AI voice recognition upgraded to cloud version (faster and more stable)
Subtitle Editor
New Features- Subtitle editor with synchronized video preview
- Real-time subtitle timeline sync (highlights current line as video plays)
- AI smart translation feature
- Major Update
Product Launch
New Features- User registration and login system
- Password recovery feature
- Video upload feature
- Video list management
- AI speech-to-text (upload video to auto-generate subtitles)
- AI smart proofreading (auto-correct typos and punctuation)
- SRT subtitle file export
- Major Update
First Prototype
New Features- First working prototype completed
- AI speech-to-text feature validated
- AI smart proofreading feature validated
- Basic subtitle editor prototype
Have any feature suggestions or feedback? We'd love to hear from you!
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