Tools
The Tools section holds six edits that each do one job to a subtitle file and leave everything else alone. Five of them are free to use — like the YouTube Transcript screen they sit outside the license check, because no model runs and nothing is downloaded to do the work. The sixth, Sync, needs a license.
What is in the section
| Shift Timing | Moves every subtitle in the file earlier or later by the same amount. |
|---|---|
| Shift a Section | Moves a range of subtitles — subtitles 340 to the end, say — without touching the rest. |
| Color | Sets the colour of the subtitle text, or strips colouring the file already carries. |
| Position | Moves subtitles to another part of the frame — top, middle, a corner. |
| Clean Up | Removes SDH descriptions, credits and clutter, and repairs timing. Offline rules, no AI. |
| Sync | Realigns subtitles to a video’s audio or another subtitle. Licensed. |
Each is its own screen and they all work the same way: open one subtitle file, choose what to change, check the preview, save. AI Clean Up uses the same layout from the main menu.
Opening a file
Click Add subtitles or drop a file anywhere on the window. One file at a time — these are single-file edits, not batch jobs; to run one over a season, use the matching step in a workflow.
SRT (SubRip), WebVTT and ASS/SSA (Advanced SubStation Alpha) are read and written. Character encoding is detected on open, so a Windows-1252 or UTF-16 subtitle opens correctly and is saved back as UTF-8.
The preview, and what actually changes
Below the settings is a before-and-after table. Rows the tool will change are highlighted, the new value is shown in colour and the original is struck through beneath it. A line above the table says how many subtitles change — and says Nothing changes with the current settings when the answer is none, which is also when Save is greyed out. Settings start with nothing chosen, so opening a file never arms a change by itself.
The tools do not rewrite the parts of the file they were not asked to touch. A subtitle a tool does not change comes back byte for byte as it was, down to the way its timestamps were spelled. This matters most for ASS: the script info and styles, each event’s layer, style, margins and effect, karaoke timing, typesetting and comment lines all stay. Line breaks stay where the file put them; the layout settings in Settings → General apply only to subtitles the app produced. Color and Position change dialogue only, not signs or karaoke.
Saving
Save overwrites the file you opened. Save as… asks for a destination and suggests name (edited).srt beside the original; after that, further saves go to the copy. The file is written in the format it was opened in — a .ass stays an ASS file with its styles. To change format, use Convert or the editor’s export. Settings describe the total change from the file as it was opened, not a running tally.
When to use something else
These tools apply a change you have already decided on. If you do not know the offset, use Sync, which listens to the audio. To edit individual lines or retime single cues against a waveform, use Edit Subtitles.