Creator Toolkit

Subtitle Formatter

Import UTF-8 SRT or VTT, edit subtitle text, find invalid or overlapping timestamps, and export validated subtitles while preserving timing and text.

Processed in your browser — files are not uploaded

Import subtitles

or click to browse from your device

UTF-8 SRT, VTT·2 MBProcessed in your browser

Subtitle source — edit text and timestamps

Export format

How to use Subtitle Formatter

Import or paste subtitles

Use UTF-8 SRT or VTT up to 2 MB. Original source remains editable even if parsing fails.

Review and fix

Correct timestamp errors in the source. Edit cue text below after validation passes. Overlapping or out-of-sequence cues block exports.

Export SRT or VTT

Timing and cue text are preserved. VTT positioning is preserved in VTT; converting to SRT removes positioning settings with an explicit notice.

Processed in your browser

This tool runs entirely in your browser using JavaScript. Files you select are not uploaded to any server. Processing happens locally on your device.

Frequently Asked Questions

Are advanced VTT features supported?

Timed cues, identifiers, and common cue settings are supported. Header metadata, NOTE, STYLE, REGION, and unsupported settings remain in the source and block export rather than being silently discarded.

Are long lines automatically shortened?

No. Lines over 42 Unicode code points and cues with more than two lines show readability warnings. You choose whether to edit them.

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