twineconvert

free · in-browser · no upload

SBV to Text
Converter

Drop your SBV file. We'll convert it to TXT right here in your browser, your file never leaves your device.

or drop your file

Select your file here to get started

or drop your file here.

Accepts .sbv

nothing uploaded no file size cap no signup

How it works

Three steps. No upload, no signup.

  1. 1

    Drop your file

    Click the dropzone above or drag a SBV from your desktop. Files of any size, there's no upload, so there's no upload limit.

  2. 2

    Convert in your browser

    The conversion runs entirely in this tab using JavaScript and WebAssembly. Your file never touches our servers, we don't have any.

  3. 3

    Download

    Get your TXT the moment the conversion finishes. Convert another, or close the tab.

Files stay on your device

Your file is never uploaded. The entire conversion runs in your browser using WebAssembly. We can't see what you convert because we have no server to see it.

No file size limit

Server converters cap free users at 1-2 GB and gate larger files behind a paid plan. Since nothing uploads, our limit is whatever your browser can handle.

Free, no signup, no ads on conversions

No account required. No watermark on the output. No queue. Drop a file, get a converted file.

Why convert SBV → Text

What this conversion is actually for

SBV is a timed caption format; this strips the timestamps, cue numbers, and inline markup to give you a clean plain-text transcript of what is said. Repeated lines from rolling auto-captions are collapsed, and each caption becomes one line. Runs in your browser, nothing is uploaded.

A real example

You have a SBV caption file from a video and just want the words, e.g. to paste into a doc, summarize, or feed to an LLM. Drop the SBV here and get the transcript text back.

Troubleshooting

Lines are split oddly or a caption is on two lines.

Each cue becomes one transcript line; a caption that was wrapped across two screen lines is joined with a space. If you need sentence-level paragraphs, the source captions did not encode sentence boundaries, so re-flow the text in your editor.

Formats involved

About SBV and TXT

SBV, SubViewer (YouTube subtitle format)

SBV is YouTube's legacy subtitle download format — `H:MM:SS.mmm,H:MM:SS.mmm` start/end timestamps separated by a comma, then caption text on the next lines. YouTube Studio still exports captions as SBV when you click 'Download captions' in the video editor. Single-digit hours, period decimal, no header.

How to open

Any text editor. Most subtitle editors (Subtitle Edit, Aegisub) auto-detect SBV from the timestamp shape. Convert to SRT/WebVTT for use outside YouTube.

Full SBV format guide →
TXT, Plain text

Plain text, the simplest data format. No formatting, no metadata, just characters. Universal compatibility across every device and program ever made. UTF-8 encoding has been the de facto default for over a decade.

How to open

Every text editor on every platform. Browser previews. Universal.

Full TXT format guide →

You may also need

More tools people use alongside this one

Related tools

Convert other files to TXT

Convert your SBV to other formats

FAQ

Common questions

Is this SBV → Text converter really free?

Yes. No signup, no watermark, no daily file count limit. Every conversion runs in your browser, your file never touches our servers because there are no servers.

Where does my file go when I convert it?

Nowhere. The conversion runs entirely in your browser using JavaScript and WebAssembly. Your file is never uploaded to our servers. We don't have any servers handling files, there's nothing for us to log, store, or accidentally leak.

What's the maximum file size?

Whatever your browser can hold in memory. Practically, this means a few hundred MB on most computers, significantly larger than the 1-2 GB caps that server-upload converters charge for. Very large files (multi-GB) may require closing other browser tabs first.

Why convert SBV to TXT?

Downloading and editing YouTube auto-generated captions. Universal text interchange. The most common reason to convert is compatibility, TXT works in places where SBV doesn't, or vice versa.

How do I open a SBV file in the first place?

Any text editor. Most subtitle editors (Subtitle Edit, Aegisub) auto-detect SBV from the timestamp shape. Convert to SRT/WebVTT for use outside YouTube.

Does this work offline?

Once the page is loaded, the conversion itself runs entirely offline. The first time you use a tool, your browser downloads the conversion library (a one-time cache). If you reload while offline, the page won't load, but you can install the site as a Progressive Web App for full offline use.

Can I convert multiple files at once?

Single file at a time for now. Batch conversion is on the roadmap, for now, drop one file, download the result, then convert the next.