WebFaz Subtitles

Text to SRT subtitles

PT

Local by default. Only if you turn on AI is o texto das falas, somente ao clicar em Traduzir legenda sent to Groq. Learn more

Text to SRT subtitles: create subtitles from a text

Open a text file (TXT or Markdown) or paste the text, and the app creates an SRT in which each line becomes a line of fixed duration (4 seconds by default). The times are only an estimate: adjust the duration and then check the sync with the video. The conversion happens in the browser, without sending the file.

Open or drag a subtitle, ZIP or videoSubtitles up to 5 MB · ZIP up to 256 MB · MP4/MOV and MKV/WebM up to 2 GB

Files stay on your device.

Input

JSON: array of objects with start and end in seconds and text with the line. TXT and Markdown: each non-empty line becomes a block.

Output

Adjust timing for conversion

Continue in the video editor or the text editor.

How to do it, step by step

  1. Open the .txt file (or paste the text into the Input box), with one line per row.
  2. In the Adjust timing tab, set the Duration per text block.
  3. Check the times in the Output box.
  4. Download the SRT and adjust the sync with the video.

See where to click, with an image of the tool →

When this is useful

Create the subtitles of a short video from the script

Each line of the script becomes a line.

Prepare subtitles to adjust later

Use the result as a starting point and fix the times.

Tips for a good result

  • Each non-empty line becomes a block; blank lines are ignored.
  • To adjust the lines with the video on screen, open the subtitle correction with video page.

What this tool does not do

  • The times are generated by the duration per block (4 seconds by default), not by the real speech: the app warns that the sync needs review.
  • Very long lines become long captions on screen: break the text into short lines beforehand.
  • Subtitle files of up to 5 MB; ZIP of up to 256 MB; video of up to 2 GB.
  • Everything happens in the browser: the file is not sent. The only exception is the optional translation, which sends only the text of the lines.

Frequently asked questions

Are the times in sync with the speech?
No. They only follow the duration per block. To sync, adjust the times in the player or use the timing adjustment.
Can I generate subtitles from audio?
This app does not transcribe audio. For that, use WebFaz Transcription and send the result here.

More Subtitles tools

Text written by Marcelo Amantino · updated October 18, 2026 · who we are