字 AI-SRTSub

Subtitle Format Converter Guide

This guide walks the page from top to bottom: load a subtitle, confirm the detected format, choose the output format, and download. Everything runs in your browser — no file ever leaves your device.

Updated 2026-10-17Tool guides

Load your subtitles

Drag a file into the dashed box or click to choose one; you can also paste the content straight into the text box. The format is detected from both the extension and the content, and the result shows in the format tag.

  • Readable formats: srt, vtt, ass (including ssa), sbv, lrc, txt
  • txt carries no timing — each line gets 3 seconds in sequence, handy for generating a first draft from plain text before retiming
Upload area: a sample SRT loaded, detected as SRT
The detected format shows in the tag — check here first if in doubt

Choose the output format

Pick the target format from the drop-down: six options — srt, vtt, ass, sbv, lrc, txt. Converting to ass rebuilds a fixed 1920×1080 default style (white text, black outline, bottom center) and does not keep the original fonts or colors; txt exports text only, without timing.

Output format drop-down with VTT selected
The output format does not follow the input — you pick it

Bilingual handling

If the file is bilingual (two lines in one cue, or interleaved cues), the layout is kept as-is during conversion. Choosing "keep bilingual" splits the two languages into upper and lower lines, each rewrapped on its own; the control is disabled when no bilingual text is detected.

Convert and download

Hit "Convert": the result panel shows the cue count and total duration, with the text ready to inspect. Click Download to save the file, or Copy to take the text directly. Conversion never changes any timing values — it rewrites the format only. To retime cues, use the timing tool.

Result panel: cue count and total duration with download and copy buttons
6 cues, 0:23 total — skim the text before downloading

Runs entirely in your browser, nothing to install.

Open the subtitle converter

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