Subtitle Extractor
Intelligently extract hardcoded subtitles from any video, quickly and accurately.
Lightweight & Fast AI Audio/Video Toolkit
Process Video Subtitles & Audio Fast in Just a Few Clicks
Lightweight AI toolkit for creators. No complex software needed: add bilingual subtitles, remove hardcoded watermarks, isolate vocals and instrumentals, and transcribe 100+ languages in one click. Upload and get results in minutes.
No software install requiredOne-click zero editingReady in minutes
Quantum Subtitle4K • 60 FPS
EN ➔ 中文
"Fast video subtitles & audio tools in one click."
"一键为视频添加双语、翻译或原文字幕，免剪辑直接出片"
AI processingReady
One-Click Output
Add Subtitles to Video
One-click to add bilingual, translated, or original subtitles to videos, export ready-to-share videos without editing, and get subtitle files.
Upload File
AI Instant Processing
Bilingual Video + SRT Ready
Fast
Secure
Quick ToolsChoose the right AI tool for every step of your subtitle workflow
Subtitle Extractor
Intelligently extract hardcoded subtitles from any video, quickly and accurately.
Subtitle Translator
Easily translate SRT subtitles into multiple languages while preserving timestamps and formatting.
Speech Recognition
Next-gen AI multilingual speech-to-text with speaker diarization and audio event detection.
Add Subtitles to Video
One-click to add bilingual, translated, or original subtitles to videos, export ready-to-share videos without editing, and get subtitle files.
Everything in one place
Our Products
Choose the right AI tool for every step of your subtitle workflow
Subtitle Tools
Subtitle Translator
Easily translate SRT subtitles into multiple languages while preserving timestamps and formatting.
Speech Recognition
Next-gen AI multilingual speech-to-text with speaker diarization and audio event detection.
Video Tools
Translation & Dubbing
NEWUpload video or audio, translate and dub the original speech into your target language, and download the dubbed media and subtitles.
Add Subtitles to Video
One-click to add bilingual, translated, or original subtitles to videos, export ready-to-share videos without editing, and get subtitle files.
Subtitle & Text Watermark Remover
Remove hardcoded subtitles and text watermarks from videos with AI technology
Music Vocal Separation
Accurately separate vocals and accompaniment with one click to quickly get high-quality backing tracks or clean vocal tracks.
Other Tools
VoiceBoo Text to Speech
HOTHyper-realistic AI text-to-speech generator! Effortlessly create multi-character immersive audiobooks and voice dramas from novels and stories.
Quantum OCR
A lightweight desktop companion for capturing text from any screen region. Core OCR features are free forever.
Subtitle Snapshot Editor
Free tool to edit subtitle snapshots.
Local Subtitle Viewer
Interactive subtitle editor: edit text, fine-tune millisecond timestamps, manage speakers, and sync with local media.
Flexible Pricing for Everyone
Choose the plan that fits your needs
Free Trial
Try all features after account verification
No credit card required
Pay As You Go
$0.02/ Credit
Purchase credits as needed
As low as
Why Choose Our AI Subtitle Platform
Why Choose Our AI Subtitle Platform?
High-performance AI audio & video workflow built for creators and global teams: fast, accurate, private, and subscription-free.
0 Install
Browser-based, zero install
Upload and process audio & video in minutes without complex software.
100+ Languages
100+ languages & speaker diarization
Accurately transcribe code-switching speech, dialects, and audio events.
24h Wipe
Strict privacy & 24h auto-deletion
All processing is strictly isolated and uploaded files are automatically wiped within 24 hours.
Pay As You Go
Fair Pay-As-You-Go, No Subscription Traps
No expensive subscriptions. Pay only for what you use with permanent credits that never expire, plus free trial for all tools.
Starting from $0.02 per credit
Credits never expire
No monthly commitments
Free trial of all features
Quantum Subtitle
Try for Free NowSay Goodbye to Complex Editing, Finish in Minutes
No heavy software needed. Drop your audio/video in the browser to generate subtitles, remove watermarks, or isolate vocals in one click.