How to Convert and Fix SRT and VTT Subtitle Files Online
Learn how to convert SRT/VTT subtitles, shift timings, clean captions and test subtitle files before publishing videos.
Why subtitle tools matter
Subtitle files are used for YouTube videos, online courses, social clips, website video players and translated content. The two common formats are SRT and WebVTT/VTT. SRT is widely used by editors and upload platforms, while VTT is common for HTML5 web video and some modern caption workflows.
Common subtitle tasks
- Convert SRT to VTT for web video players.
- Convert VTT to SRT for upload workflows.
- Shift all captions earlier or later when audio is out of sync.
- Clean extra spaces, blank lines and formatting issues.
- Count words and cues to estimate caption length.
Best practice
After converting or shifting subtitles, always test the output inside the actual platform where it will be published. Subtitle timing, line breaks and styling can appear slightly different across players.
Privacy note
Use public or non-sensitive subtitle content where possible. Avoid pasting confidential transcripts into any online tool unless you understand and accept the risk.
Quick checklist
- Open the tool that matches your exact task.
- Enter clean input and check the result before downloading or copying.
- For file tools, use unlocked files and avoid private documents unless you understand the processing method.
- Use related tools when you need to convert, format, calculate or prepare the next step.
Useful related tools
AIPintora keeps public lists focused on working tools only. These related tools can help you complete common PDF, invoice, QR, text, developer and calculator tasks faster.
- SRT to VTT Converter — Convert SRT subtitles to WebVTT format for web video players and caption workflows.
- Position Size Calculator — Calculate position size using account balance, risk percentage and stop loss.
- PDF Editor — Edit PDF pages with text, whiteout, highlights, signatures, images and drawing tools.
- QR Code Generator — Generate QR codes for links, text and business use with scan and readability checks.
- Invoice Generator — Create clean invoices online with customer, item, tax, discount and total review.
- VTT to SRT Converter — Convert WebVTT captions to numbered SRT subtitle format.