Cloud Speech

Turn highlighted text on any web page into natural speech using multiple cloud text-to-speech providers (Amazon Polly, Azure Speech, Google Cloud TTS, and OpenAI) from a single extension. Setup guides, pricing notes, and troubleshooting live on the website.

Features

• Connect Amazon Polly, Azure Speech, Google Cloud TTS, and/or OpenAI with your own credentials; every voice appears in one searchable picker, tagged by provider
• Preview any voice before selecting it, and star your favorites
• Read aloud from the context menu, a keyboard shortcut (Ctrl/Cmd+Shift+S), or the popup sandbox, with playback controls and live speed adjustment
• Download any selection as an MP3 file (Ctrl/Cmd+Shift+E)
• Adjust speed, pitch, volume, and speaking style where the selected voice supports them
• Use the interface in English, Chinese (Simplified and Traditional), or Hindi
• Credentials stay in your browser (Chrome sync optional), and text is sent only to the provider you chose

Store listings

One Chrome build is published to three Chrome Web Store listing IDs, so users of the original single-provider extensions keep receiving updates:

• Cloud Speech: the unified listing, recommended for new users
• The original Polly and Azure listings receive the same build in place; their users are prompted to move to the unified listing with their settings transferred automatically

A Firefox build ships to addons.mozilla.org as "Cloud Speech".

Development

Built with WXT, React 19, TypeScript (strict), Tailwind CSS v4, and Bun. The repo is a bun-workspaces monorepo: apps/extension holds the extension, apps/web the Astro website (setup guides, pricing, troubleshooting, privacy policy).

bun install            # install dependencies
bun run dev            # extension dev with HMR (opens Chrome) + website on localhost:5173
bun run build          # check + all builds: chrome, firefox, web (browser builds also zip)
bun run build:chrome   # Chrome build + store zip → apps/extension/.output/chrome-mv3
bun run build:firefox  # Firefox build + store zip → apps/extension/.output/firefox-mv3
bun run build:web      # website → apps/web/dist
bun run test           # vitest, both build targets (chrome + firefox)
bun run check          # biome lint + format
bun run typecheck      # tsc --noEmit (strict, both apps)

Load an unpacked build from apps/extension/.output/chrome-mv3/ via chrome://extensions (Developer mode). For Firefox, bun run --cwd apps/extension dev:firefox runs the extension in a temporary profile via web-ext.

To rebuild the Firefox store package from source (for example as an AMO reviewer): install Bun (the version pinned in the root package.json packageManager field), then run bun install --frozen-lockfile followed by bun run --cwd apps/extension build:firefox. The zip appears in apps/extension/.output/.

Architecture in one paragraph

Provider-specific logic (SDK calls, credential fields, voice normalization, SSML/prosody) lives entirely behind the TtsProvider interface in apps/extension/src/providers/, one file per provider plus a registry. Everything else (playback transport, offscreen audio, storage, UI) is provider-agnostic and registry-driven. Adding a new TTS API = one new provider file + one registry line + locale strings + a setup guide page on the website.

Support

• Bug reports and feature requests: GitHub Issues
• Website: vivswan.github.io/cloud-speech

License

MIT; see LICENSE.