Products

OpenSubs

AI-native

Free AI subtitle generator that runs in your browser

opensubs.app Source★ 2 Chrome Web StoreVideo & Audio / Subtitles, Translation & Dubbing

AI Benchmark
Desktop
Mobile
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
Creators
OpenSubs
@opensubsapp· 18 followers
Launched
2mo ago
2026-09-16 · Est.

Traffic

Last 12 months
Monthly visitsData through Oct 2026
Events3 marketing moves

Marketing moves

Launches, search & content, referrals, promotions
X accounts@opensubsapp
  • Launched 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 moves
  • Launched 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 moves
  • Launched 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
Fazier
2026-09-16Source
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
Ruanyf Weekly
2026-09-24Source

Open Source & Agent Ecosystem

GitHub · MCP / Skill
Last commit 2026-10-20
GitHub Stars
★ 2
Forks
—
License
See repository
Primary language
—

Store data

Chrome Web Store
Chrome Web Store Chrome Web Store
Update date not synced
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

Oct 2026

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

KeywordMonthly volume
opensubtitles321.1K
opensubs11.3K
open subs5,470
open subs eng130
自动加双语字幕—

Traffic data: Vaneform

Pricing

$0 forever
$0 forever
Subtitles generated in your browser, every line editable · Translation into 20 languages on your device, with Chrome's built-in translator (desktop Chrome 138 or later) · All 12 subtitle styles, with word-by-word highlighting · Burned into the video (MP4, or WebM where the browser cannot make MP4), no watermark, ready to post · Trimming and resolution control · SRT, VTT, ASS and TXT export
Credits
$5 for 1,000 credits
1,000 credits · about 1 credit per 30 subtitle lines, so $5 translates about 30,000 · Credits never expire, and a failed job costs nothing

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

Tracked since 2026-09-17

Key pages

Weekly snapshots
opensubs.app/ Snapshot 2026-11-03

Changes

No pricing, plan, or positioning changes detected since tracking started.

Design

First-screen visual analysis & :root CSS

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

Palette · click to copy

5-D design score7.5 / 10
Typography
8.0
Color & Contrast
8.0
Layout & Spacing
8.0
Craft & Polish
7.0
Distinctiveness
6.0

Structure

Fonts
Inter
Primary visual
Interactive Hero Demo / Tool
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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Video & Audio / Subtitles, Translation & Dubbing

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