.sub
Open SUB on Phone
Quick view supported
OpenOnPhone can show a quick view for this format.
Yes. OpenOnPhone can show a quick local view for .sub files in your browser.
What is a .sub file?
SUB is a subtitle extension used by several subtitle variants, including MicroDVD-style files.
Why is .sub hard to open on a phone?
- Phone viewers usually show subtitle files as raw text.
- Timestamps and cue boundaries are hard to scan without a structured view.
- A local preview is enough to confirm language, timing, and text content.
What OpenOnPhone does not do
OpenOnPhone is for quick local inspection. It does not replace the original professional app for editing, conversion, exact layout, formulas, measurements, security review, or full workflow features.
MIME examples
- text/plain
- application/octet-stream
Next steps
- Choose the SUB file on the home page.
- OpenOnPhone shows a local timeline and text preview.
- Use a subtitle editor when you need retiming, styling, or video synchronization.
Related formats
FAQ
- What is a .sub file?
- SUB is a subtitle extension used by several subtitle variants, including MicroDVD-style files.
- Can OpenOnPhone show a quick view for .sub files on phone?
- Yes. OpenOnPhone can show a quick local view for .sub files in your browser.
- What should I try next for .sub files?
- Choose the SUB file on the home page. OpenOnPhone shows a local timeline and text preview. Use a subtitle editor when you need retiming, styling, or video synchronization.