Speak It by Katie Mulliken

Speak It reads web pages aloud in a natural voice, highlighting each sentence and word as it's spoken. The speech is generated on your own computer by Kokoro, an open text-to-speech model: nothing you read is sent to a server.

Needs WebGPU: Firefox has it on Windows and on Macs with Apple silicon. Without it, speech is generated too slowly to keep up with playback.

Open an article and choose Read page. Speak It finds the main text, skips menus, ads and sidebars, and scrolls the page along with what it's reading.

• Read the whole page or just the selected text
• Right-click a paragraph and choose Read page from here
• Click any sentence while it reads to jump to it
• Pause, skip between passages, and change the speed from 0.5× to 3× without changing the pitch
• Back to text returns you to where it's reading after you scroll away
• Shortcuts: Alt+Shift+R reads, Alt+Shift+P pauses (change them under Manage Extension Shortcuts)

41 voices in American and British English, Spanish, French, Hindi, Italian and Brazilian Portuguese. It also reads Google Docs (without highlighting) and pull requests and issues on GitHub, GitLab and Forgejo, comments included.

The speech model (about 325 MB) is downloaded once, the first time you open Speak It, and kept on your computer. There are no accounts, analytics or ads.