Add Subtitle.ai
Browser-based AI video subtitle, translation, dubbing, voiceover, and rewrite tool for multilingual video workflows.
About Add Subtitle.ai
Add Subtitle.ai is a browser-based AI video editor focused on subtitles, translation, dubbing, voiceover, and text-based video rewrite workflows. Official pages position it for creators and businesses that need to add captions, translate videos into 100+ languages, produce AI dubbing, clone voices, style subtitles, and export or share finished videos without installing desktop editing software. The product is strongest when a team already has a finished or near-finished video and needs to make it understandable in more languages, improve sound-off social viewing, or repair spoken lines without a reshoot. The free Basic tier makes it easy to test the workflow, while paid tiers unlock more credits, longer storage, larger files, watermark-free exports, and higher usage limits. Readers should treat accuracy figures such as 99% or 99.9% as official marketing claims and verify results on their own accents, audio quality, languages, and review standards before relying on it for high-stakes content.
Best for
Best use cases
A YouTube creator uploads a finished video, generates subtitles, corrects transcript timing in the editor, styles captions, and exports a publish-ready version.
A course team translates an English lesson into several target languages, reviews the translated subtitles, adds AI dubbing, and shares the localized files with students.
A sales team prepares the same product demo for overseas prospects by translating the video, keeping subtitles synchronized, and testing whether the dubbed voice fits the message.
An agency fixes a spoken mistake in a client video through text-based rewrite and dubbing instead of scheduling a reshoot.
A marketer turns a captioned campaign video into sound-off social assets while keeping watermark-free export and file-size limits in mind.
Compare before choosing
Compare with professional editors such as Adobe Premiere Pro or Final Cut Pro when timeline control, color grading, or broader post-production matters more than fast subtitle and translation workflows.
Compare with AI dubbing platforms such as HeyGen, Rask AI, or ElevenLabs when voice quality, avatar workflows, enterprise review controls, or localization operations are the main buying criteria.
Compare with manual transcription and subtitle vendors when regulated content, legal review, broadcast-level QC, or human translation assurance is required.
Compare plan limits carefully because video duration, file size, cloud storage, watermark removal, voice clones, and credit usage change materially by tier.
Features
AI subtitle generation
Generate synchronized subtitles or captions from uploaded video, then review and adjust the text before export.
Video translation
Translate video content into 100+ languages with subtitles and AI voice options according to the official product pages.
AI dubbing
Create translated voiceovers and lip-synced dubbing for localized videos, with official pages emphasizing natural timing and context-aware output.
Subtitle styling
Customize caption appearance with styles, fonts, colors, and positioning for social, course, and marketing videos.
Text-based rewrite
Fix or rewrite spoken lines by editing text and generating matching audio, reducing the need for reshoots on small changes.
Voice cloning and voiceover
Use AI voices or clone voices within plan limits to produce narration, localized speech, or rewritten segments.
Browser workflow
Work online through upload or supported link-based flows, edit in the web interface, then download or share the final video.
Plan-based exports
Move from watermarked free testing to paid tiers with watermark-free exports, longer storage, larger files, and higher credit allowances.
Pros
- Combines subtitle generation, translation, dubbing, voiceover, and rewrite workflows in one browser-based product.
- Free Basic tier provides a low-risk way to test transcript quality, editing flow, and export behavior.
- Paid plans publish concrete credit, file-size, storage, and video-duration limits, which helps users estimate fit before subscribing.
- Useful for creators and small teams that need fast localization without operating a full professional editing stack.
- Official pages cover multiple practical entry points, including subtitles, translation, rewrite, voiceover, and creator or sales use cases.
Cons
- Accuracy claims are vendor claims and should be verified on the user's own languages, audio quality, accents, and terminology.
- The free plan includes a watermark and tight limits on video duration, file size, storage, and credit usage.
- Uploaded videos and related content are collected for service delivery, and the privacy policy says the product team may access uploaded files for quality assurance, troubleshooting, and improvement.
- Enterprise details, API or SDK access, private deployment, and dedicated account management require direct contact instead of self-serve pricing.
- It is not a full replacement for professional nonlinear editing when a project needs advanced timeline control, grading, compositing, or broadcast review.
Pricing Plans
Basic
- 30 credits
- 3 voice clones
- 7 days cloud storage
- 20 minute video duration
- 200 MB video size
- Add Subtitle watermark
- Standard customer support
- Video exports and shares
Standard
- 200 credits
- 5 voice clones
- 180 days cloud storage
- 30 minute video duration
- 300 MB video size
- Subtitle export
- Lip sync
- Watermark-free exports
- Priority customer support
Pro
- 500 credits
- Unlimited voice clones
- Permanent cloud storage
- 60 minute video duration
- 500 MB video size
- Higher subtitle, translation, voiceover, and subtitle-translation credit allowances
- Most popular tier on the official pricing page
* Pricing information is for reference only. Please refer to the latest announcement on Add Subtitle.ai's official website.