OpenSubs
AI-nativeFree AI subtitle generator that runs in your browser
opensubs.app Source★ 2 Chrome Web StoreVideo & Audio / Subtitles, Translation & Dubbing
- Monthly visits
- 8.7K
- Oct 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- $5/mo
- Lower than 81% of peersNiche median $9.9/mo
- Launched
- 2mo ago
- 2026-09-16 · Est.
Traffic
Marketing moves
Launches, search & content, referrals, promotionsLaunched on 阮一峰周刊投稿Launch
【开源自荐】OpenSubs:在浏览器里给视频加字幕,视频不上传 — 官网:https://opensubs.app 仓库:https://github.com/open-subs/opensubs (AGPL-3.0) OpenSubs 用来给视频加字幕:识别语音、翻译、调样式、烧进画面,整个过程在你自己的机器上完成,视频文件不会上传到任何服务器。 打开网页就能用,不用注册、不用装东西,也没有水印和时长限制。语音识别用的是 Whisper,编译成 WebAssembly 在浏览器里跑,支持 WebGPU 加速;除网页版外还有浏览器扩展、桌面版和命令行三种用法。 几个可能有用的细节: - 字幕可以导出 SRT / VTT / ASS,也可以直接烧录成 MP4 - 支持翻译,并且可以保留原文做成双语字…
Sep 24 · 53d agoLaunch page
At the time: <5K visits/mo2 concurrent movesLaunched on Uneed (#33)Launch
OpenSubs — Generate, translate, style and burn subtitles into video, right in your browser.
Sep 17 · 2mo agoLaunch page
At the time: <5K visits/mo2 concurrent movesLaunched on Fazier (#79 · 25 upvotes · 2 comments)Launch
OpenSubs — Free AI subtitle generator that runs in your browser
Sep 16 · 2mo agoLaunch page
At the time: <5K visits/mo2 concurrent moves
Third-party reviews & case dossiers
Acquisition breakdowns, engineer reviews & open-source metrics- What engineers like:
- Features Local speech recognition. Whisper runs in the browser tab (WebGPU when available, otherwise WebAssembly). Pick a model from 40 MB to 250 MB; it downloads once and is cached. Automatic language detection. Or set the spoken language yourself. Edit every line. Fix the text of any subtitle before you export. Translate subtitles into 20 languages. In Chrome this runs on your device for free, using the browser's built-in translation. Timings stay unchanged. Caption styles. Choose a preset, add word-by-word highlighting, and preview it over your own footage. Export. Download .srt, .vtt or .ass, or an MP4 with the subtitles burned into the picture, ready for Instagram, TikTok or YouTube Shorts. Open an existing subtitle file. Import .srt or .vtt to translate it, restyle it or convert between formats, no video needed. Optional: your own API key. For a larger model or a weak device, send the audio to OpenAI, Groq or Google Gemini with your own key. This is off by default.
- Best suited for:
- Who is it for? Creators adding captions to short-form video Anyone subtitling recordings they don't want to upload: lectures, interviews, client calls, family videos Translators and editors who need a quick SRT/VTT conversion or translation
Open Source & Agent Ecosystem
- GitHub Stars
- ★ 2
- Forks
- —
- License
- See repository
- Primary language
- —
Agent, MCP & Developer Integration
CLI / SDKStore data
- Rating
- Rating not syncedRating count not synced
- New ratings last mo
- —
- Price & IAP
- FreeIAP data not synced
- Current version
- —Store metadata
Store assets, rating histograms, install tiers, and screenshots are synced from Apple App Store, Google Play, and Chrome Web Store.
Traffic sources
Traffic breakdown
Channels
- Direct38%
- Organic Search30%
- Referrals14%
- AI Assistants6%
- Other12%
Countries
- Taiwan66%
- United States28%
- Hong Kong4%
- United Kingdom2%
- Canada1%
Search
Domain authority —Domain registered 2026-08-29
| Keyword | Monthly volume |
|---|---|
| opensubtitles | 321.1K |
| opensubs | 11.3K |
| open subs | 5,470 |
| open subs eng | 130 |
| 自动加双语字幕 | — |
Traffic data: Vaneform
Pricing
Trial: None · Observed 2026-11-03 · Source page
Entry price $5/mo, Lower than 81% of peers; “Subtitles, Translation & Dubbing” median is $9.9/mo.View pricing benchmark
Pages & changes
Key pages
Weekly snapshotsChanges
No pricing, plan, or positioning changes detected since tracking started.
Design
Minimal Monochrome (Light canvas, balanced density) featuring centered headline + input layout and interactive hero demo / tool visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“Free AI subtitle generator that runs in your browser”
Centered Headline + Input hero structure paired with direct input / instant try CTA and live generated output showcase.
Conversion path: Centered Headline + Input + Interactive Hero Demo / Tool → Direct Input / Instant Try · Trust bar: Live Generated Output Showcase
- Category Positioning Anchor
- Centered Prompt / Input
Palette · click to copy
- Typography
- 8.0
- Color & Contrast
- 8.0
- Layout & Spacing
- 8.0
- Craft & Polish
- 7.0
- Distinctiveness
- 6.0
Structure
- Fonts
- Inter
- Hero layout
- Centered Headline + Input
- Primary visual
- Interactive Hero Demo / Tool
- Conversion CTA
- Direct Input / Instant Try
- Social proof
- Live Generated Output Showcase
- Navigation
- Full-Width Top Bar
- Theme & density
- Light · Balanced
- Corners & depth
- Large Radius · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Minimal Monochrome (with Soft & Friendly)
Monochrome palette with a single accent color, hairline dividers, and generous whitespace.
## Design Tokens
```css
:root {
--background: #f9f8f4;
--surface: #ffffff;
--foreground: #111111;
--muted-foreground: #777671;
--accent: #00c49a;
--radius: 16px;
--font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #F9F8F4 (~72%) · Surface #FFFFFF (~16%) · Text #111111 (~6%) · Muted Text #777671 (~4%) · Accent #00C49A (~2%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.
## Layout & Conversion Structure
- Hero layout: Centered Headline + Input
- Navigation: Full-Width Top Bar
- Theme & density: Light · Balanced
- Border radius & elevation: Large Radius; use elevation shadows to separate layers
- Primary visual medium: Interactive Hero Demo / Tool
- Conversion CTA: Direct Input / Instant Try · Trust bar uses Live Generated Output Showcase
- Headline hook: Category Positioning Anchor
- Hero components: Centered Prompt / Input
- Spatial layout notes: Centered Headline + Input hero structure paired with direct input / instant try CTA and live generated output showcase.
- Visual summary: Minimal Monochrome (Light canvas, balanced density) featuring centered headline + input layout and interactive hero demo / tool visuals.
## Avoid
- Multi-stop neon gradients
- Heavy drop shadows
- More than one competing accent color
Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.
Questions & evidence
- How much does OpenSubs cost?
- $0 forever: $0 forever; Credits: $5 for 1,000 credits. Observed 2026-11-03. Check the source for current billing terms, usage limits and taxes.Source
- How much website traffic does OpenSubs get?
- Vaneform estimates 8.7K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is OpenSubs and what platforms does it support?
- OpenSubs is catalogued under Subtitles, Translation & Dubbing: Free AI subtitle generator that runs in your browser. Supported platforms: Browser Extension, CLI / SDK.
- Is OpenSubs open source?
- OpenSubs has a public repository (https://github.com/open-subs/opensubs) with its source repository published, recording 2 GitHub stars.Source
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