---
url: https://superduperai.co/tools/caption-checker/
title: "Caption reading-speed checker"
description: "Paste an SRT: words per second per cue, lines over the limit, and how long a voice-over takes to say."
lang: en
type: tool
category: publish
---

# Caption reading-speed checker

Paste an SRT: words per second per cue, lines over the limit, and how long a voice-over takes to say.

Runs entirely in your browser: no account, no upload, no API key.

## Related tools

- [Safe-zone and aspect-ratio overlay](https://superduperai.co/tools/safe-zone/): Drop a frame or a video and see the TikTok, Reels and Shorts UI zones over it; crop and pad numbers between 16:9, 9:16, 4:5 and 1:1 with the ffmpeg line.
- [Script, shot list and prompt list](https://superduperai.co/tools/script-formatter/): Paste a rough script; get timed beats, word count, a shot-list table, a storyboard JSON and one generation prompt per shot.

More for agents: https://superduperai.co/llms.txt · MCP server: https://superduperai.co/mcp