Edit text inline
Click any subtitle line to fix typos, reword phrases, or correct AI-generated errors. Changes apply in real-time with live video preview.
Editor
Free Online Subtitle Editor - Edit SRT & VTT Instantly
Already have subtitles but need to fix timing, correct typos, or restyle them? CapsAI's subtitle editor lets you edit SRT, VTT, and ASS files directly in your browser. Adjust word-level timestamps, change fonts and colors, merge or split lines - all without installing software.
SRT
VTT & ASS supported
Free
No signup required
Instant
Browser-based editing
Features
Everything you need to edit subtitles perfectly
Precision timing adjustment
Drag timeline markers or type exact millisecond values to sync subtitles perfectly. Fix desync issues from auto-generated files in seconds.
Restyle fonts and colors
Change font families, sizes, colors, outlines, and shadows. Apply consistent branding across all your subtitle files.
Split and merge lines
Break long subtitle blocks into readable segments or merge fragmented lines. Maintain natural reading flow for your audience.
Import any subtitle format
Upload SRT, VTT, ASS, or SSA files and edit them in a unified interface. Export to whichever format your platform requires.
Live video preview
See your edits rendered on the actual video in real-time. No more guessing if timing and positioning look right.
Workflow
Edit subtitles in 4 easy steps
Step 1
Upload your subtitle file
Drag and drop an SRT, VTT, or ASS file - or upload a video to use AI-generated subtitles as your starting point.
Step 2
Edit text and timing
Fix errors, adjust timestamps, and restyle text using the visual editor with real-time video playback.
Step 3
Preview on video
Watch your edited subtitles play back on the video to verify timing, readability, and positioning.
Step 4
Export in any format
Download as SRT, VTT, or ASS - or burn subtitles directly into the video for a watermark-free export.
Use Cases
Why creators choose CapsAI's subtitle editor
No software to install
Works entirely in your browser. No downloading Aegisub or Subtitle Edit - just upload, edit, and export online.
AI-assisted corrections
CapsAI suggests spelling fixes, punctuation improvements, and timing adjustments as you edit. Accept or ignore with one click.
Batch editing support
Apply find-and-replace across all subtitle lines, shift all timestamps at once, or restyle every line simultaneously.
Works with any video platform
Export files compatible with YouTube, Vimeo, Facebook, LinkedIn, and any player that supports standard subtitle formats.
FAQ
Subtitle editor - frequently asked questions
Can I edit SRT files online for free?
Yes. Upload any SRT file to CapsAI and edit text, timing, and styling directly in your browser. Export the updated file when done - completely free.
What subtitle formats can I edit?
CapsAI supports SRT, VTT (WebVTT), ASS, and SSA files. You can import in one format and export in another if needed.
Can I fix subtitle timing without re-transcribing?
Absolutely. The timeline editor lets you drag, shift, or manually type timestamps for any line without regenerating the entire transcription.
Does the editor work on mobile?
Yes. The subtitle editor is responsive and works on tablets and smartphones, though desktop provides the best editing experience for precision work.
Can I edit auto-generated YouTube subtitles?
Yes. Download your YouTube auto-captions as SRT, upload to CapsAI, fix errors and timing, then re-upload the corrected file to YouTube.
Edit subtitles online - free, fast, no install
Fix timing, correct text, restyle captions. CapsAI's browser-based subtitle editor handles SRT, VTT, and ASS files in seconds.
Try CapsAI Free →