What it does
One click fixes most files
Load your SRT, click Re-segment all, and every card is broken again by a real segmentation engine instead of a character counter. Most files need nothing else after that click.
- Smart line breaksNever ends a line on an article, a preposition, an intensifier, a contraction or a negator, and keeps proper nouns whole.
- Standard limitsSticks to a 42-character line and a two-line card.
- Break rules you controlYour own list of words that must never end a line, with a match-case option, plus two-word groups that should never be split.
- See exactly what changedCompare the original and the new version side by side, card by card, with a character count on every line.
- Move words, keep the timingMove a word between lines or push it to the next card, and the boundary follows that word's own timestamp so the audio stays matched.
- Edit on the waveformLoad the video and drag the start and end of each card on the audio waveform.
- Split, merge and re-breakSplit at the cursor with the times recalculated, merge, unbreak, re-break a single card, insert, delete and undo.
- Warnings that catch what the eye missesCharacters per line, reading speed in characters per second, and clickable warnings that jump to the next problem.
How it works
Ready in three steps
Open the app
Save the HTML file to your computer and double-click it. It opens in your browser, ready to use.
Load your SRT
Add the video or audio too if you want the preview and the waveform.
Re-segment, then fine-tune
Click Re-segment all, check the comparison, fix the few cards that need it, and save the new SRT.
Deterministic by design
Nothing leaves your computer
One segmentation engine, with no AI model and no API key, so the same input always gives the same output. Your video and your transcript stay on your computer, and the tool works offline.
- Who it is for
- Translators, subtitlers, captioners and digital creators who deliver SRT files and care about where the lines fall. Especially useful if you export from a tool that segments by character count.
- What you get
- A single HTML file, with no installation and no account, plus a three-page quick-start guide with the full shortcut list and an explanation of every setting.
- Requirements
- Any current desktop browser: Chrome, Edge, Firefox or Safari. A video or audio file if you want the preview and the waveform.
Clean subtitles in one click
Re-segment the whole file, then spend your time on the few cards that need a human eye.
Get Subtitle Refiner