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Just Captions
What Just Captions is
Just Captions adds styled captions to videos and exports captioned video for sharing. It generates captions in more than 50 languages and offers AI translation into more than 33 languages. Users can edit caption text or use AI Correct to fix words the system misheard. The site describes 15 styles, including Emoji, Mega, Word Highlight, and Highlight Box, along with burn-in captions and brand caption presets. The free app offers three videos a day with a watermark and says no card is needed; the Free plan includes on-device caption generation and single or batch captioning. Pro plans remove watermarks, add animated styles and higher export quality, and include 600 AI caption minutes per month, but no prices are given for those plans. The browser tool accepts MP4 and MOV and processes the first 60 seconds locally. Its API returns timed captions in SRT, VTT, or JSON. An open-source MCP, CLI, renderer, and style catalog are MIT licensed, and MCP support is offered for Codex and Claude Code. The product is listed for API, iOS, macOS, and web.
Who it suits
Just Captions suits video makers who want styled captions, multilingual caption generation, and captioned exports. Its API and open-source agent tools also suit people building caption workflows or custom pipelines.
What it does well
- Automatic captions in 50+ languages and translation into 33+.
- Edit caption text or correct misheard words with AI Correct.
- 15 styles, including Emoji, Mega, and Word Highlight.
- Free use includes on-device caption generation.
- API returns timed captions in SRT, VTT, or JSON.
- MCP, CLI, renderer, and style catalog are MIT licensed.
What to know first
- Free video exports carry a Just Captions watermark.
- Pro plan prices are not given in the listed details.
- Browser tool processes the first 60 seconds locally.
Limits
The Free option gives three videos a day and adds a watermark. The browser tool processes the first 60 seconds locally. The Free API plan includes 30 audio minutes per month and 50,000 caption characters per month.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Caption videos with a Just Captions watermark · Single and batch captioning · On-device caption generation | Free |
| Pro Monthly | Removes watermarks · Animated caption styles · Higher export quality · 600 AI caption minutes per month | On request |
| Pro Yearly | Removes watermarks · Animated caption styles · Higher export quality · 600 AI caption minutes per month | On request |
| Free API plan | 30 audio minutes/month · 50,000 caption characters/month · no card | Free |
| API pay as you go | $0.01 per audio minute, billed per second; $0.01 per 1,000 caption characters sent; Stripe invoices monthly · Default spend cap is $100/month · failed requests are not billed | On request |
As justcaptions.com lists them, read 19 Sept 2026. The maker's own page has the final word.
Getting started
- Visit https://www.justcaptions.com/.
- Use the Free option for up to three videos a day without a card.
- For browser captioning, provide an MP4 or MOV file.
- Use the API for timed SRT, VTT, or JSON captions.
- Use the listed iOS, macOS, web, or API access route.
Verdict
Choose Just Captions if you need styled video captions, multilingual support, or an API for caption workflows. Look elsewhere if you need watermark-free exports without a Pro plan or want to caption longer videos with the browser tool.
Questions
What platforms does Just Captions support?
The listed platforms are API, iOS, macOS, and web.
Is there a free plan?
Yes. The Free plan is listed as free and includes on-device caption generation. The app offers three videos a day free with a watermark and says no card is needed.
What do the Pro plans include?
Pro Monthly and Pro Yearly remove watermarks and include animated styles, higher export quality, and 600 AI caption minutes per month. Their prices are not given.
Does the API have a free plan?
Yes. The Free API plan is listed as free and includes 30 audio minutes per month and 50,000 caption characters per month, with no card.
Is Just Captions open source?
The MCP, CLI, renderer, and style catalog are MIT licensed.
Which AI providers process caption text?
The privacy policy says optional AI Correct and AI Translate send caption text to OpenAI on the non-China path and DeepSeek on the China path. Backup routing may be enabled explicitly.
Facts from Just Captions's own pages
- Agent integration
- The maker offers open-source MCP support for Codex and Claude Code, plus an API for custom pipelines. · justcaptions.com, 11 Oct 2026
- API outputs
- The API returns timed captions in SRT, VTT, or JSON formats. · justcaptions.com, 11 Oct 2026
- Batch limit
- Pro supports up to 20 videos totaling 60 minutes at once. · justcaptions.com, 11 Oct 2026
- Brand caption presets
- Yes · justcaptions.com, 19 Sept 2026
- Browser tool
- The browser caption tool accepts MP4 and MOV and processes the first 60 seconds locally in the browser. · justcaptions.com, 11 Oct 2026
- Burn-in captions
- Yes · justcaptions.com, 19 Sept 2026
- Caption styling
- Yes · justcaptions.com, 19 Sept 2026
- Data handling
- API recognition uploads extracted audio, while correction, translation, and emoji selection send caption text; offline recognition keeps media on the machine. · justcaptions.com, 11 Oct 2026
- Editing
- Users can edit caption text or use AI Correct to fix misheard words. · justcaptions.com, 11 Oct 2026
- Free plan
- Yes · justcaptions.com, 19 Sept 2026
- Free usage
- The app offers three videos a day free with a watermark and says no card is needed. · justcaptions.com, 11 Oct 2026
- Languages
- It provides automatic captions in 50+ languages and AI translation into 33+ languages. · justcaptions.com, 11 Oct 2026
- Local rendering
- The agent video tools render previews and export MP4 on the user's computer. · justcaptions.com, 11 Oct 2026
- Open source
- The MCP, CLI, renderer, and style catalog are MIT licensed. · justcaptions.com, 11 Oct 2026
- Product
- Just Captions adds styled captions to videos and exports captioned video for sharing. · justcaptions.com, 11 Oct 2026
- Styles
- The site describes 15 caption styles, including Emoji, Mega, Word Highlight, and Highlight Box. · justcaptions.com, 11 Oct 2026
- Subtitle export
- other formats · justcaptions.com, 19 Sept 2026
- Support
- The site links to a Help & contact page for support. · justcaptions.com, 11 Oct 2026
- Supported AI providers
- The privacy policy says optional AI Correct and AI Translate send caption text to OpenAI on the non-China path and DeepSeek on the China path, with backup routing possible when explicitly enabled. · spacesheepboy.github.io, 11 Oct 2026
Where Just Captions stands on Freedom251
- AI Video Caption Generators#7 of 99