Add subtitle files to your videos. Support for SRT and VTT formats.
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More about the Add Subtitles to Video
SRT and VTT aren't interchangeable formats wearing different file extensions, their timestamp syntax actually differs, SRT separates milliseconds with a comma, VTT with a period, and VTT requires its own header line SRT doesn't carry at all, small enough differences that a subtitle file written for one format often fails silently when fed into software expecting the other. This tool attaches subtitles to a video and accepts either SRT or VTT directly, without requiring one format to be converted into the other first. Useful for adding captions to a video when the subtitle file already exists as SRT from one source and VTT from another, attaching subtitles without a separate conversion step beforehand, or preparing a video for a platform that specifically expects one subtitle format over the other.
Add subtitle files to your videos. Support for SRT and VTT formats. The Add Subtitles to Video is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Add Subtitles to Video?
Open the Add Subtitles to Video on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Add Subtitles to Video free to use?
Yes. The Add Subtitles to Video is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Add Subtitles to Video safe and private?
Yes. The Add Subtitles to Video processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Add Subtitles to Video produce?
The Add Subtitles to Video produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Add Subtitles to Video work on mobile devices?
Yes. The Add Subtitles to Video is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Is video processing done in the cloud with the Add Subtitles to Video?
No. The Add Subtitles to Video runs in your browser using WebAssembly, so your videos stay on your machine. If an operation ever requires a server (for example, heavy transcoding of very large files), we flag it clearly before anything is uploaded.
How long does video processing take with the Add Subtitles to Video?
Processing time depends on the file size, the operation, and your device's performance. Because everything runs locally in your browser, there are no server queues or upload delays. Short clips process in seconds; longer videos may take a few minutes.
Can I use the Add Subtitles to Video offline?
Once the page has loaded, the Add Subtitles to Video continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.