Price: $0 vs subscription
Captionly is free forever — no plan, no card, no trial. Submagic starts around $16/month and caps minutes/exports per tier.
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A free, private, in-browser Submagic alternative
Captionly vs Submagic — side by side
Both tools add AI captions to short-form video. The difference: Captionly is 100% free, runs entirely in your browser and never uploads your video. Submagic is a paid cloud service starting around $16/month with limits on every plan.
Submagic built a real product and a real audience around viral-style captions. We respect it. But for most creators — especially anyone who values privacy, doesn't want a recurring bill, or just needs to caption a few clips — the equation tilts to a local tool. This page is the honest comparison: what each tool does well, where they differ, and when you should pick one over the other.
Free AI subtitle generator — drop a video to get started
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Supports MP4, MOV, AVI, WebM (max 500MB)
100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved
✦ Where Captionly and Submagic differ
Where Captionly and Submagic differ
Five concrete differences between an in-browser tool and a cloud product.
Where your video is processed
Captionly transcribes and renders locally with Whisper + WebCodecs. Submagic uploads your video to their servers. If your client signed an NDA, that matters.
Watermark
Captionly never adds a watermark. Submagic's plans remove the watermark only at higher tiers.
Signup
Captionly needs no email, no account, no card on file. Submagic requires a signup before you can use it.
Caption styles + control
Both offer trendy preset styles. Captionly ships 12 presets plus fine-grained control over font, weight, anchor, padding, active-word color and per-phrase grouping.
When to pick Submagic
If you're a heavy daily user who wants templated B-roll, emoji overlays, sound effects and a polished mobile app, Submagic does more in those areas. For pure captions, the in-browser tool is hard to beat on cost and privacy.
✦ ShowcaseReal videos.
Real videos.
Real captions.
See how creators of every kind are using Captionly. Drag to browse, click to play.
EN0:42
Neon Pop
thischangedmylife
EN1:18
Box Highlight
andthat'swhenIquit
EN0:21
Gradient Wave
onemorerep!
EN2:04
Karaoke
Tokyoatgoldenhour
EN0:56
Bounce
bestadviceever
ES0:33
Outline
novasacreer
EN0:28
Shadow Pop
let'sgo!victory
EN1:45
Underline
watchthistrick
EN0:52
Glitch
thisisinsane
EN0:38
Minimal
feelthebeat
EN0:19
Rainbow
hitthatmove
EN0:47
Pill
waitforit
✦ FAQ
Captionly vs Submagic — direct answers
The questions creators actually ask before switching from Submagic to a free tool.
Related tools
- Captionly vs KapwingCaptionly vs Kapwing compared. Captionly is 100% free with no watermark and runs in your browser. Kapwing watermarks free exports and uploads to the cloud. Features, pricing, privacy.
- Captionly vs VEEDCaptionly vs VEED.io compared. Captionly is free, in-browser and never uploads your video. VEED has limits and watermarks on the free plan and processes in the cloud.
- TikTok subtitle generatorAdd viral TikTok-style subtitles to any video for free. AI transcription with Whisper, runs in your browser, no watermark, no signup. Export burned-in MP4 or SRT.
- Podcast subtitle generatorGenerate accurate AI subtitles for podcast videos, audiograms and clips. 50+ languages, 1-click inline edit, export SRT for YouTube or burn-in MP4. Free, in-browser, no signup.
- YouTube Shorts subtitle generatorAdd AI captions to YouTube Shorts in seconds. Free, no watermark, no signup, 12 vertical-ready styles. Burn into MP4 or export SRT for YouTube auto-captions.
- Burn subtitles into videoBurn subtitles directly into an MP4 in your browser. No upload, no FFmpeg setup, no watermark. WebCodecs-powered, free forever, 12 caption styles. Done in seconds.
Free · In-browser · No watermark
Try the free Submagic alternative
Drop a clip, pick a style, ship a captioned MP4. Same viral-caption energy, no subscription, no upload, no watermark.