PST

Subtitle Editor

Upload an SRT, ASS, or VTT subtitle file to edit cues directly in your browser — adjust timestamps, edit text, add or delete entries — then export to any format. No uploads, entirely private.

Upload Subtitle File
Supported: .srt, .vtt, .ass / .ssa (UTF-8). Drag and drop or click to browse.
Upload a subtitle file to start editing.

Edit Subtitles Without Installing Anything

Upload your subtitle file and start editing immediately — no account required, no software to install, nothing sent to any server.

Inline Editing

Click any timestamp or subtitle text to edit it in place. Save with Enter or Ctrl+Enter — no separate edit screens.

All Major Formats

Open SRT, WebVTT (.vtt), and Advanced SubStation Alpha (.ass / .ssa) files. Add or delete cues freely.

Flexible Export

Download your edited subtitles as SRT, VTT, or ASS regardless of the original format. Mix formats freely.

Fully Private

Everything runs in your browser. Your subtitle files never leave your device — no account, no server, no tracking.

How to Edit Your Subtitles

  1. 1

    Upload your file

    Drag and drop or click to browse. SRT, VTT, and ASS/SSA files are all supported.

  2. 2

    Edit inline

    Click any timestamp to adjust timing, or click subtitle text to edit it. Add or delete cues freely.

  3. 3

    Choose export format

    Select SRT, VTT, or ASS from the Download dropdown — mix formats as needed.

  4. 4

    Download

    Click Download to save the edited file to your computer, ready to use.

Frequently Asked Questions

What subtitle formats can I edit?
You can upload SubRip (.srt), WebVTT (.vtt), and Advanced SubStation Alpha (.ass / .ssa) files. The tool auto-detects the format.
Can I change the export format?
Yes. Click the arrow next to the "Download" button to choose between SRT, VTT, and ASS output, regardless of what format you uploaded.
How do I edit a timestamp?
Click on any start or end timestamp in the editor. It becomes an editable input in HH:MM:SS.mmm format. Press Enter to confirm or Escape to cancel.
How do I edit subtitle text?
Click on any subtitle text line. A textarea opens for multi-line editing. Press Ctrl+Enter (or Cmd+Enter on Mac) to save, or click the Save button.
Does this tool upload my file to a server?
No. All parsing, editing, and exporting happens locally in your browser using JavaScript. Your files never leave your device.
Can I add new subtitle cues?
Yes. Click a row to select it, then use "Add Cue" in the header or "Add subtitle cue" at the bottom — a new cue is inserted immediately after the selected row (timings fit between that cue and the next). If nothing is selected, the new cue is appended at the end.