New

CaptionFlow.

Pop, bounce, slide, spring, karaoke, typewriter — pick a preset, tweak the colors, and burn in beautiful captions powered by the JASSUB WASM engine.

22 ready-to-go animated caption presets
Word-level highlighting (karaoke style)
Real-time WASM preview — no render to see changes
Custom fonts, colors, strokes, drop shadows

Get CaptionFlow View Pricing

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CaptionFlow preview Replace with: /images/features/captionflow-hero.png

Why Choose CaptionFlow?

See how CaptionFlow simplifies your workflow

METRIC

Manual Editing

CaptionFlow

Captioning a 10-min video with animation

90 min

4 min

PRESETS

Designed by editors, not template farms

Every preset was hand-tuned by working podcast and short-form editors. Pop, Bounce, Slide, Spring, Karaoke Highlight, Typewriter, MrBeast-style, and 15 more — each one production-ready out of the box.

ENGINE

JASSUB WASM real-time preview

Most caption tools force you to render to see changes. CaptionFlow renders subtitles in your browser via WebAssembly, so every color tweak, font swap, and timing nudge appears instantly in the preview.

JASSUB WASM real-time preview Replace with: /images/features/captionflow-preview.png

CUSTOMIZATION

Full control over every word

Adjust font, size, fill, stroke, shadow, position, and animation per preset — or override individual words with custom emphasis colors. Save your favorites as personal presets for the next project.

Full control over every word Replace with: /images/features/captionflow-customize.png

Frequently Asked Questions

Everything you need to know about CaptionFlow

Do I need to transcribe first?+

CaptionFlow can transcribe automatically or import an existing SRT/VTT. If you already used VoxScript or another transcription tool, just paste in the file.

Can I edit individual word timings?+

Yes. The word-level editor lets you drag word boundaries, fix timing, and split or merge words.

What languages are supported?+

40+ languages for transcription, and any Unicode-supporting font for rendering — including Bangla, Hindi, Arabic, Chinese, Japanese, and Korean.

Does it burn captions into the video?+

Both options — burn-in for short-form social, or sidecar SRT export for YouTube and broadcast deliverables.

Will custom fonts work?+

Yes. Drop any TTF or OTF into the fonts folder and CaptionFlow picks it up.