Merge short subtitle fragments into natural cues while preserving earliest start and latest end times.
Merge short subtitle fragments into natural cues while preserving earliest start and latest end times.
Copied text, code, value, or file content
Subtitle Merger result with readable output and validation feedback
Merge short subtitle fragments into natural cues while preserving earliest start and latest end times.
A second Subtitle Merger input for comparison
Clean result ready to copy, download, or continue in a related tool
This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.
This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.
Use Subtitle Merger for focused browser-based checks and cleanup tasks.
Prepare text, values, or technical data before pasting it into another system.
Inspect edge cases without installing desktop software.
Yes. Subtitle Merger is available as a free LumaTool web tool.
No sign-in is required for the public tool pages.
No. This tool processes input locally in your browser.
Yes. The editor, buttons, and result areas are designed for mobile and desktop browsers.
Ready tools include copy actions, and file-oriented tools include download actions where useful.
Subtitle Merger is useful for focused video & subtitle tools tasks where you need a quick browser-based result without switching tools.
This tool processes your input locally in your browser. Your text, code, file, or generated value is not uploaded to LumaTool servers.
Yes, but review the result before applying it to production systems. LumaTool helps with utility work, validation, and formatting, but final decisions stay with you.
Split long subtitle cues by length, words, punctuation, and duration with automatic timing.
Use Now SOptimize subtitle line length for one-line or two-line player-friendly display.
Use Now SFind overlapping, reversed, too short, too long, and tightly spaced subtitle cues.
Use Now SAutomatically repair subtitle overlaps, minimum gaps, cue duration, and timing order.
Use Now SRepair SRT numbering, blank lines, timestamps, and cue order locally in your browser.
Use Now