What HTML caption formats does this support?

Elements with data-start/data-end (or data-start-ms/data-end-ms) attributes, elements with begin/end attributes, and plain text with bracketed timestamps like [00:00:12] at the start of each caption.

My file didn't convert — why?

This tool needs a recognizable timing marker on each caption block. If your HTML export uses a custom structure, check whether the source tool can export VTT or SRT directly instead.

Does the converted SRT work in Premiere or CapCut?

Yes. The output is standard SRT with sequential numbering and HH:MM:SS,mmm timestamps, importable in any major video editor.

Does my file get uploaded anywhere?

No. All parsing happens locally in your browser using JavaScript. Your file never leaves your device.

Is there a file size limit?

No server-side limit — conversion runs entirely in your browser.

Free Subtitle Tools

HTML to SRT Converter — Free Online

Convert HTML captions or transcript exports to SubRip (.srt) format instantly in your browser. Supports data-start timing attributes, TTML-style begin/end attributes, and bracketed timestamps. No upload, no account.

Part of VideoText’s free subtitle tool cluster

Every converter and checker here links back to one hub so you can find the right tool fast — browse all free subtitle tools.

Free Subtitle Tools hub →

Click to upload .html file

or paste HTML content below

Don’t stop at the download

Next: fix, translate, burn, or generate from video

Out of sync, overlapping, or CPS fail? Use Fix. Need another language or hardcoded captions? Those are one click away.

Fix this file in one click →Translate Burn Video to Subtitles

⚡ Skip the manual steps

Turn any video into a transcript, chapters & summary — automatically

Upload once. Get a full transcript, AI-generated chapters, speaker labels, and subtitles in under 3 minutes.

✓Full transcript + AI summary & chapters in one upload
✓Accurate captions in 69 languages with speaker detection
✓Works with YouTube, podcasts, Zoom, TikTok & more

Try AI Transcription — free →Generate subtitles

What is an HTML caption/transcript export?

Many caption editors, transcript tools, and video platforms export timed text as HTML rather than SRT or VTT — for example, elements tagged with data-start/data-end attributes (common in caption-editor exports), begin/end attributes (an HTML-flavored variant of TTML), or plain paragraphs prefixed with a bracketed timestamp like [00:00:12]. This tool reads all three shapes and converts them into a clean, standard SRT file.

Why convert HTML captions to SRT?

SRT is the format nearly every video editor and platform expects — Adobe Premiere Pro, DaVinci Resolve, Final Cut Pro, CapCut, and YouTube Studio all import SRT directly. An HTML export from a caption tool or transcript service usually cannot be imported as-is; converting it to SRT makes it usable in your editing workflow.

Which HTML formats are supported?

This tool auto-detects three common shapes: (1) elements with data-start/data-start-ms and data-end/data-end-ms attributes, (2) elements with begin/end attributes (TTML-style timing embedded in HTML), and (3) plain text blocks where each caption starts with a bracketed or parenthesized timestamp such as [00:00:12] or (1:02:03.456). If your file uses a different structure, try exporting as VTT or SRT directly from the source tool instead.

How to convert HTML to SRT

1
Upload or paste your HTML file
Click "Choose file" to upload an .html export, or paste the HTML/text content directly into the box.
2
Conversion happens automatically
The tool detects the timing format (data attributes, begin/end attributes, or bracketed timestamps) and builds numbered SRT cues.
3
Download your SRT file
Hit "Download .srt" to save the converted file, ready for your video editor or platform of choice.

Frequently Asked Questions

What HTML caption formats does this support?: Elements with data-start/data-end (or data-start-ms/data-end-ms) attributes, elements with begin/end attributes, and plain text with bracketed timestamps like [00:00:12] at the start of each caption.
My file didn't convert — why?: This tool needs a recognizable timing marker on each caption block. If your HTML export uses a custom structure, check whether the source tool can export VTT or SRT directly instead.
Does the converted SRT work in Premiere or CapCut?: Yes. The output is standard SRT with sequential numbering and HH:MM:SS,mmm timestamps, importable in any major video editor.
Does my file get uploaded anywhere?: No. All parsing happens locally in your browser using JavaScript. Your file never leaves your device.
Is there a file size limit?: No server-side limit — conversion runs entirely in your browser.