Features
letter maps is built around one idea: the script should follow you, not the other way around. Here's what it does.
Core
- Voice-following scroll — text tracks your speech in real time via your browser's speech recognition.
- Auto-scroll mode — a steady fixed-speed crawl in any browser when you'd rather not use the mic.
- On-device recognition — on Chrome 139+, voice runs locally so microphone audio never leaves your machine.
- Mirroring — flip text horizontally for beam-splitter teleprompter rigs.
- Countdown — a short count-in before scrolling starts.
Reading comfort
- Adjustable font size for your distance from the screen.
- Multilingual — pick your script's language for accurate following.
- Keyboard control — Space to pause/resume, Esc to edit, arrows to step.
Privacy
- No account — open the page and start.
- Local-first — script and settings live in your browser's localStorage, never a server.
- Nothing uploaded in auto-scroll mode; audio stays on-device when on-device recognition is on.
Frequently asked questions
- Does letter maps record video?
- No — it's a prompter only. Pair it with your own recorder, phone camera or OBS.
- Can I use it with a hardware teleprompter?
- Yes. Turn on mirroring so the reflected text reads correctly through a beam-splitter rig.
Related: What is a teleprompter, Pricing, Offline & on-device