OpenSubs review
A capable free caption tool for browser Whisper transcription and flexible subtitle exports.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OpenSubs is a browser-based subtitle generator for creators, editors, and teams that need captions without an account or a recurring subscription. Its free plan uses Whisper speech recognition in the browser, with processing running locally by default so the video does not need to be uploaded. Users can edit subtitle text, translate captions into 20 languages, apply visual styles, and export finished subtitle files or captioned MP4 video. Desktop, command-line, and browser-extension versions extend its reach across Windows, macOS, Linux, the web, and Chrome.
The free plan covers a substantial caption workflow: all 12 subtitle styles, word-by-word highlighting, burn-in to MP4, trimming, resolution control, and SRT, VTT, and ASS export are included at no cost. Translation can run on-device, while cloud translation is available through Credits at $5 per 1,000 credits. The paid option is usage-based rather than recurring, shows the job price before running, charges nothing for failed jobs, and lets credits remain available without expiration. This structure suits occasional or variable workloads, while users who depend on cloud translation should account for credit consumption.
OpenSubs is strongest when privacy-conscious, budget-aware users want broad format and platform coverage with detailed caption styling. Its open-source model and local browser processing support a more self-contained workflow, and the export choices fit common subtitle and video delivery needs. The trade-off is a narrower branding and speaker-management feature set: it lacks brand presets and verified speaker identification. Choose OpenSubs for free transcription, translation, highlighting, and burn-in; consider an alternative if repeatable brand templates or speaker-specific captions are central to the workflow.
OpenSubs pros and cons
- Where it wins
- Free browser transcription with local-by-default video processing
- 12 styles, word-by-word highlighting, and MP4 burn-in
- SRT, VTT, and ASS exports across five platform options
- Where it doesn't
- No brand presets for recurring visual identity
- No verified speaker identification
- Cloud translation requires usage-based credits
OpenSubs fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update