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Jubler

Free#4 of 30 in Subtitle Software

Jubler: A broad free subtitle editor for multi-format production, timing, translation, and validation. Ranked #4 of 30 in Subtitle Software by our editors (8.9/10); pricing: Free plan; best for free multi-format subtitle production.

8.9/10Editor score

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Jubler8.9 Visit Jubler

At a glance

Editor score
8.9 / 10
Pricing
Free plan
Best for
Free multi-format subtitle production
Free plan
Yes
Paid from
Free
Facts checked
20 Sep 2026

Where it wins
- Supports 20+ formats, including SRT and WebVTT
- Combines timeline editing, waveforms, synchronization, and validation
- Offers command-line tools and external tool integration for automation
Where it doesn't
- Automatic captioning and integrations are less extensive than leading tools
- Azure Translator requires a separate Azure account and service subscription
- Desktop application focus may not suit teams seeking a hosted workspace

Our verdict on Jubler

Jubler is a free, open-source desktop subtitle editor for creating, editing, translating, synchronizing, validating, and converting text-based subtitles. It officially supports Windows, macOS, and Linux, making it suitable for subtitle professionals, translators, video teams, and individual creators who need a multi-format production tool without a paid plan. Support for more than 20 formats includes SRT and WebVTT, while VLC-based playback, frame preview, and audio waveform visualization help connect subtitle work with the underlying video and audio.

Its strongest case is the breadth of editing and timing tools available in one desktop application. An interactive timeline supports draggable subtitle blocks, while time shifting and frame-rate conversion address common synchronization tasks. Users can split and join subtitles, run spell checking, search and replace with regular expressions, and apply configurable quality validation, including TED guidelines checking. Side-by-side translation mode supports Azure Translator, and integrations with VLC and ASpell extend the workflow. Command-line tools and external tool integration also give automation a clear role for repeatable processing.

Jubler’s open-source pricing model keeps the core application free, with the project relying on donations rather than paid tiers. That makes it a practical choice for users prioritizing format coverage, detailed timing control, validation, and local desktop workflows. It is less suitable for teams seeking a hosted collaboration environment, broader integrations, or more extensive automatic captioning. Azure Translator can add translation support, but it requires a separate Azure account and service subscription. Choose Jubler when subtitle production depth and format flexibility matter more than a larger cloud ecosystem; consider an alternative when automated captioning or connected team workflows are central requirements.

Your product? Our editors can test Jubler in depth and publish a review, labelled as paid · from $149/mo →

Jubler pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on jubler.org

Jubler fact sheet

Free plan	Yes
Paid from	Free
Max video length	Not verified
Auto-captioning	Yes
Subtitle translation	Yes
Speaker labels	Not verified
SRT export	Yes
VTT export	Yes
Deployment	Desktop
Platforms	Windows, macOS, Linux
Built for	Solo, Small business (editorial estimate)
Integrations	3 integrations: VLC, ASpell, Azure Translator
Pricing	Free plan
Website	jubler.org
Facts checked	20 Sep 2026

Jubler integrations

Jubler lists 3 integrations on its own site.

VLC
ASpell
Azure Translator

Alternatives to Jubler

See all Jubler alternatives →

Jubler vs the competition

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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Jubler for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

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Featured on iTechGuides

Jubler is listed in our Subtitle Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update