Add Subtitles to Video Online – Easy & Free
Add timed captions or subtitles to MP4, MOV, WebM videos instantly in your browser. Customize style & position – no upload, perfect for accessibility, reels & social media.
Add Subtitles to Video
Burn subtitles directly into your video file.
Supports .SRT and .VTT formats with high-quality rendering.
1. Select Video
2. Select Subtitles (.srt)
Upload video • MP4, MOV, WebM & more • Add timed text • Customize font & position • Up to 500 MB • 100% client-side • Real-time preview
What You Can Do With This Subtitles Tool
- Add timed captions – enter text with start/end times
- Customize style – font, size, color, background, shadow
- Position control – bottom, top, middle – drag to place
- Batch apply – use same subtitles on multiple videos
- Real-time preview – see captions on video instantly
Why Use Waridi Tech Add Subtitles?
- 100% private – videos stay on your device
- Fast client-side processing – instant rendering
- Supports MP4, MOV, WebM, AVI, MKV & more
- Full styling control – font, color, size, position
- Timing editor – easy start/end adjustment
- Batch support – apply to multiple videos quickly
- Real-time preview – watch with subtitles live
- Free forever – no signup, no ads, no watermarks
- Offline capable – install as PWA
Add Subtitles Comparison
| Feature | Waridi Tech | Other Online Tools |
|---|---|---|
| Privacy | 100% client-side | Often uploads videos |
| Speed | Instant (browser processing) | Server-dependent delays |
| Cost | Free, unlimited | Free with limits / paid |
| Styling Options | Full (font, color, position) | Limited or basic |
| Offline Support | Yes (PWA) | No |
Frequently Asked Questions
Is this subtitles tool free?
Yes – completely free, no signup, no limits or hidden fees.
What video formats are supported?
MP4, MOV, WebM, AVI, MKV and more.
Is it private and safe?
Yes – 100% client-side. Your videos never leave your device.
Can I customize subtitle appearance?
Yes – change font, size, color, position, background, shadow.
Can I add subtitles to multiple videos?
Yes – batch support for adding same subtitles style to several files.
Can I use it offline?
Yes – install as PWA to use without internet after first load.
What is the maximum file size?
Up to 500 MB per video (browser memory dependent). Shorter videos process faster.
Does adding subtitles reduce quality?
No – subtitles are burned in or soft-added without re-encoding loss when possible. Output keeps original quality.
Related Video Tools
More Free Tools
- Video Editor – full suite of tools
- Audio Editor – trim, merge audio
- Compress Image – reduce image size
- Document Converter – PDF, Word, Excel
- Social Media Downloader – videos & photos
Ready to Add Subtitles to Your Videos?
Fast, private, free – add captions easily without uploading. No limits, no watermarks.
Available Worldwide
Works in modern browsers on desktop, tablet and mobile. Updated March 2026.