How do I convert SRT subtitles to VTT?

Simply paste your SRT subtitle file into the editor, then click the "Convert to VTT" button. The tool will parse the subtitle data and convert it into WebVTT format, which you can copy or download immediately.

How can I shift subtitle timestamps forward or backward?

Paste your subtitles in the box, specify the shift amount (for example, 2.5 seconds or -500 milliseconds), and click "Shift Time". All timestamps in the file will be updated automatically.

Can I clean my subtitles to make a readable text transcript?

Yes. The subtitle cleaner option removes subtitle index numbers, start/end timestamps, formatting tags like bold or italics, and optional speaker tags or bracketed descriptions. This leaves you with a clean, raw text transcript.

Is my subtitle file kept private?

Yes. All file reading, subtitle parsing, shifting, and conversion are processed entirely client-side in your web browser. Your subtitle data is never sent to any server, keeping your content secure.

Subtitle Tools Online - Convert, Shift & Clean Subtitles

Shift Time:

Clean Options:

Remove Timestamps

Remove Line Numbers

Remove Style Tags (e.g. <b>)

Remove Speaker Names & Sounds (e.g. [Laughter], John:)

Ready

Manage, Convert, and Sync Subtitles Online

Subtitle files like SRT (SubRip Subtitle) and VTT (WebVTT) are standard text documents, but editing them by hand is slow and prone to errors. Our online tool offers a complete set of features to shift timing, convert formats, or extract clean text without requiring any software installation.

Whether you need to sync a video with slightly delayed captions, convert SRT to WebVTT for HTML5 video compatibility, or strip out code tags and timestamps to create a readable article, this tool processes everything instantly inside your web browser.

How to Use the Subtitle Editor

🔄 Converting Formats

Web video players usually require the VTT format, while media players like VLC or video editors often prefer SRT. To convert, paste your subtitles into the editor and click either "Convert to SRT" or "Convert to VTT". The converter automatically handles header blocks, timestamp formats (commas vs. periods), and styling tags, outputting a clean file ready for download.

⏳ Time Shifting and Synchronization

If your captions are running ahead of or behind the spoken audio, you can synchronize them in bulk. Enter a positive number (like 1.5) to push subtitles forward, or a negative number (like -0.75) to shift them backward. Choose between seconds and milliseconds, then click "Shift Time". The tool updates every single start and end time with microsecond precision.

📝 Clean Transcript Extraction

To turn a subtitle track into a readable article or study guide, use the transcript cleaning tool. You can choose exactly what to strip: index numbers, timestamps, HTML style tags (such as <i> or <u>), and non-dialogue cues (like [Applause] or speaker names). The result is a clean, contiguous text document representing the spoken words.

Full Client-Side Processing for Maximum Privacy

We respect the confidentiality of your video files and caption documents. Unlike other online converters that upload your files to external servers, all parsing, shifting, and conversion occur locally on your machine. The JavaScript engine handles the text processing right inside your browser, meaning your transcripts and media assets are never transmitted or saved online. It is fast, secure, and works offline.

Frequently Asked Questions

What is the difference between SRT and VTT formats?

SRT is an older, simple subtitle format that uses commas for millisecond separators (e.g., 00:01:20,500). VTT (WebVTT) is a modern web standard that supports advanced styling, uses periods for decimal separators (e.g., 00:01:20.500), and begins with a mandatory "WEBVTT" header line.

How does time shifting work?

Every time block in the subtitle content is parsed. The offset value you provide is added to or subtracted from both the start and end timestamps. The updated timestamps are then formatted back into the subtitle syntax without altering the text contents.

Will formatting tags be preserved when shifting time?

Yes. When shifting time or converting formats, style tags are preserved. Style tags are only removed if you explicitly use the "Clean Transcript" function with the style cleaning options checked.

Can I clean auto-generated YouTube transcripts?

Yes. YouTube auto-generated transcripts downloaded as VTT or SRT often contain duplicate lines, overlapping timestamps, and speaker labels. The clean transcript option is designed to filter these out and format the text into readable paragraphs.

🎬 Subtitle Tools