Guides
Guides & answers
Everything about letter maps, from first principles to setup, pricing and the fine print — grouped so you can jump to what you need. Looking to choose a tool? See the teleprompter comparison.
Foundations
What is a teleprompter?A teleprompter shows your script as scrolling text so you can read while looking at the camera. How they work, hardware vs software, and what voice-following changes.FeaturesVoice-following scroll, on-device recognition, mirroring, a countdown, adjustable text and multilingual support — everything letter maps does, local-first and free.Why voice-following beats auto-scrollFixed-speed teleprompters force you to match a timer. A voice-following teleprompter matches you instead — fewer retakes, a more natural delivery.
Audience & cost
A teleprompter for creatorsYouTubers, course makers, founders and presenters use letter maps to read scripts on camera without sounding read. Why it fits a solo creator workflow.Pricingletter maps is free — no account, no subscription, no per-export fees. Your script stays in your browser. What 'free' means here, and why.
Requirements & setup
RequirementsWhat you need to run letter maps: a modern browser, a microphone for voice mode, and Chrome 139+ for on-device recognition. Nothing to install.Quick startRead your first script in under a minute: paste your text, start, and speak — letter maps follows your voice. A three-step quick start.Full setupConfigure letter maps end to end: microphone permissions, language, on-device recognition, mirroring, countdown and font size — for the best follow accuracy.How to use a teleprompterA practical guide to using a teleprompter on camera: script it for speech, place the screen near the lens, control the scroll and keep your delivery natural.
Real-world use & risk
Use casesReal situations where a voice-following teleprompter helps: YouTube videos, online courses, product demos, speeches, webinars and multilingual reads.LimitationsWhere letter maps has limits: browser support for voice, recognition accuracy in noise, language coverage, no recording, and the trade-offs of a local-first tool.Teleprompter reading speed (WPM)How fast should you read on a teleprompter? Typical words-per-minute ranges, how to estimate runtime from word count, and why voice-following skips speed-setting.
Context & support
Browser supportWhich browsers letter maps works in: voice-following is best in Chrome and Chromium browsers, on-device voice needs Chrome 139+, and auto-scroll works everywhere.Offline & on-device recognitionWhere your script and voice are processed: scripts stay in your browser's localStorage, and on Chrome 139+ voice recognition runs on-device so audio never leaves your machine.SupportGet help with letter maps: troubleshooting microphone and voice issues, fixing scroll problems, and where your scripts live if they go missing.