How to Make an SRT File: Free Online SRT Subtitle Generator & Editor

What Is an SRT File and Why Do You Need One?

An SRT file is a plain-text subtitle format: each caption is stored as a number, a timestamp range, and the subtitle text. Video players and editors — YouTube, Premiere Pro, DaVinci Resolve, CapCut, VLC — read SRT files to show captions in sync with your video. Because SRT is plain text you can edit it in any text editor, but building every line by hand is slow and error-prone. A dedicated SRT generator turns a finished script into correctly timed subtitle lines in seconds.

1
00:00:01,000 --> 00:00:04,000
Your first subtitle line goes here

Why Generate SRT in the Browser?

Browser tools remove every barrier between your script and a finished subtitle file. There is nothing to install and no account to create, and the generator runs locally, so unreleased videos, client voice-over scripts, and internal training content never leave your device. The same tool works on Windows, macOS, Linux, Chromebook, tablet, or phone, because it is just a web page.

How to Generate an SRT File in 4 Steps

1. Paste your script or caption text into the main text box.
2. Choose a split mode: by punctuation, by line length, or spread evenly across a target total duration.
3. Set a start-time offset, the maximum words per line, and the timestamp style (milliseconds or comma format).
4. Download the .srt file or copy the text straight into your video editor's subtitle importer.

Which Split Mode Should You Pick?

Fix Subtitles That Are Out of Sync

Sync drift usually comes from two places: the first caption starts too early or too late, or lines are so long that viewers cannot finish reading them in time. The generator solves both problems. A global start-time offset shifts the entire track, and the per-line word limit keeps captions short enough to read. If you already have an SRT with minor timing issues, the editor lets you adjust timestamps, merge or split cues, and export a cleaned file.

An SRT Workflow for Video Creators

• Script Splitter — time a voice-over script to a target duration before subtitling.
• SRT Subtitle Generator — turn the final script into a timed .srt file.
• Text to Speech — hear the script read aloud to check pacing before you lock the cut.
• Screen Recorder with AI Subtitles — record the screen and export video with matching SRT.

FAQ

Is the SRT generator free? Do I need to sign up or upload my script?

Yes, it is completely free and there is no signup. Everything runs locally in your browser — your script never leaves your device, so there is nothing to upload and nothing to store.

Will the generated SRT work in CapCut, Premiere Pro, or DaVinci Resolve?

Yes. The output is standard SRT — sequence number, timestamp range, and text — which every major editor imports natively. Just drag the .srt file onto your timeline.

Can I generate subtitles for a long script or video in one go?

Yes. Paste your whole script and choose a split mode — by punctuation, line length, or target duration — and the generator turns it into properly numbered, timed captions. You can review and adjust before downloading.

Can I shift all subtitles earlier or later to match my video?

Yes. Use the time-offset control to move every caption forward or backward by seconds, plus millisecond-level fine tuning for frames where the audio starts slightly off. No manual line-by-line editing needed.