Captions & Subtitles·Updated
The best subtitle generators turn video audio into accurate, time-synced SRT or VTT captions in minutes. PlainScribe is the top pay-as-you-go pick at $0.067/min ($4/hour), exporting both SRT and VTT with high accuracy on clear audio across 47 languages. Kapwing and Zubtitle lead for styled social captions; Happy Scribe for heavy translation.
If you just want to generate subtitles for a file now, use PlainScribe's subtitle generator.
An automatic subtitle generator runs your video's audio through automatic speech recognition (ASR), then splits the text into timed cues and writes them to a caption file. The steps are the same in every tool:
The two formats you'll meet most: SRT (SubRip) is plain, numbered, and universally supported; VTT (WebVTT) is web-native and supports styling. Most platforms accept both, and converting between them is lossless. PlainScribe exports both SRT and VTT so you're never locked in.
Caption file vs burned-in captions: a caption file (SRT/VTT) can be toggled on and off and is what YouTube, Vimeo, LinkedIn, and most players expect. Burned-in (open) captions are part of the video pixels, which is what short-form social tools like Zubtitle produce. Tools like PlainScribe and Rev produce files; Kapwing, VEED, Descript, and Zubtitle can do either.
Upload a video (up to 1GB), get time-synced captions at $0.067/min with no monthly fee. High accuracy on clear audio, 47-language transcription and translation, and export to SRT, VTT, TXT, and CSV. How to use it: sign up (your first transcript is free, up to 2 hours), upload the video, wait for the email, then download SRT or VTT, fix any misheard words in a text or subtitle editor, and upload it to your platform. Verdict: the best value for accurate, portable caption files — and the only pick that auto-deletes your video after 30 days.
Auto-captions inside a full browser video editor. Freemium, subscription from ~$10/month; free tier adds a watermark. How to use it: open the video in Kapwing's editor, choose Subtitles → Auto-generate, pick a caption style, then export the video with burned-in captions or download the SRT. Verdict: great if you want to edit and caption in one place.
Polished caption styling, speaker labels, and team features on a subscription. How to use it: upload to VEED, click Subtitles → Auto Subtitle, select the language, adjust fonts and positioning, then export the video or the SRT/VTT file. Verdict: strong for branded, broadcast-leaning work.
$24–$33/month. Edit the video by editing the transcript; captions fall out naturally. How to use it: import the video and let Descript transcribe it, edit the transcript (edits re-cut the video), then add a Captions layer or export SRT from the Publish menu. Verdict: excellent accuracy and workflow for podcasters/YouTubers, at a subscription price.
Purpose-built for short-form, with auto-styled on-screen captions. Subscription-based. How to use it: upload the clip, let Zubtitle auto-caption it, choose a caption template and progress bar, then export in 9:16, 1:1, or 16:9 for each platform. Verdict: ideal for vertical social video, less so for plain caption files.
AI captions come with a plan (free 45 min/month; paid plans from $29.99/seat/month), human captions from $1.99/min (99%+); clean SRT/VTT output. How to use it: upload the video, choose AI or human captions, wait (minutes for AI, 12–24 hours for human), then download SRT, VTT, or a burned-in version. Verdict: worth the premium when caption accuracy is critical.
$10–$25/month with strong translation across many languages. How to use it: upload, pick the spoken language, review the subtitles in the editor, add translated tracks, then export each language as SRT or VTT. Verdict: good for subtitling content for international audiences.
| Tool | Price | Accuracy | Model | Best for | |------|-------|----------|-------|----------| | PlainScribe | $0.067/min ($4/hr) | High on clear audio | Pay-as-you-go | SRT/VTT export, privacy | | Kapwing | from ~$10/mo | ~94–97% | Freemium/sub | Editor + captions | | VEED | Subscription | ~94–97% | Subscription | Styled pro captions | | Descript | $24–$33/mo | ~94–97% | Subscription | Text-first editing | | Zubtitle | Subscription | ~94–97% | Subscription | Social short-form | | Rev | Plans from $29.99/seat/mo (AI minutes included); $1.99/min human | 99%+ (human) | Subscription (human per-minute) | Human accuracy | | Happy Scribe | $10–$25/mo | ~94–97% | Freemium/sub | Multilingual subtitles |
Verdict: for accurate caption files you can drop into any platform, PlainScribe wins on price and portability. Pick Kapwing or Zubtitle when you want captions burned and styled onto social video, and Happy Scribe for heavy translation.
Every tool above has a free entry point, but "free" means very different things:
| Tool | What's free | Watermark? | Caption file export on free? | |---|---|---|---| | PlainScribe | First transcript free (up to 2 hrs), no card | No | Yes, SRT/VTT/TXT/CSV | | Kapwing | Free tier | Yes | Limited | | VEED | Free tier, short exports | Yes | Limited | | Descript | ~3 hours/month | Yes | Yes (watermarked video) | | Zubtitle | Trial only | Yes | No | | Rev | 45 AI minutes/month (English only) | — | — | | Happy Scribe | Small allotment | Often | Limited | | YouTube Studio | Unlimited (own channel) | No | Yes, SRT/VTT |
Verdict: if you want a clean, unwatermarked caption file for free, PlainScribe's free first transcript or YouTube Studio's auto-captions (for video already on your channel) are the only real options. The editor-first tools are free to try but watermark their output.
What is the best subtitle generator? For accurate, portable SRT/VTT files without a subscription, PlainScribe is the best value at $0.067/min with high accuracy and 47-language support. For styled social captions, Kapwing and Zubtitle lead; for translated subtitles, Happy Scribe.
What's the difference between SRT and VTT? SRT is the simplest, most universally supported caption format. VTT (WebVTT) is web-native and supports CSS styling. Most platforms accept both, and conversion is lossless — PlainScribe exports both so you can use either.
Can subtitle generators translate captions? Yes. PlainScribe transcribes and translates across 47 auto-detected languages, and Happy Scribe specializes in multilingual subtitles. You generate captions in the spoken language, then translate to your target languages.
How accurate are auto-generated subtitles? On clean audio, top AI captioning reaches roughly 94–99% accuracy. Background noise, accents, and overlapping speakers reduce accuracy, so always review before publishing. Rev's human captions hit 99%+.
What is the best free auto subtitle generator? PlainScribe (first transcript free, no watermark, SRT/VTT export) for a clean caption file, or YouTube Studio's auto-captions if the video is already on your channel. Kapwing, VEED, and Descript have free tiers but watermark exports. The free subtitle generator table above shows exactly what each free plan includes.
What is the best video subtitle generator for YouTube? Generate an SRT with PlainScribe (or any tool that exports SRT), then upload it in YouTube Studio under Subtitles. YouTube's own auto-captions are free but only 70–85% accurate, so a generated-and-reviewed file is worth it for anything public.
Are auto-captions free? Some tools offer free tiers (often watermarked). PlainScribe makes your first transcript free (up to 2 hours) with no credit card and no watermark on exported caption files. See free transcription software.
PlainScribe makes your first transcript free (up to 2 hours), no credit card required. Generate your first captions, see pricing, or browse our transcription tools. For the full landscape, read our best transcription software roundup and our guide to audio transcription apps.
Your first transcript is free (up to 2 hours). No credit card required.