Speak text aloud with the browser speech engine. Free, no upload.
No. Processing stays in your browser unless the tool only uses device APIs with no file upload.
Yes. Free without an account for the core conversion path.
Files you select are not sent to Power Tools servers for conversion. Clear shared computers after use.
Yes—see the on-page limits for size, duration, or browser API support.
Recent Chromium, Firefox, or Safari builds work best. Some APIs need HTTPS and permissions.
Whatever your OS/browser installed. Lists update when voices change.
Open the result in a second app or tab, compare against a small known-good sample, and only then send it to clients or commit it to git. Listen to the start, middle, and end after processing. Keep an unprocessed master; speed/volume/reverse outputs are derivatives. If something looks wrong, adjust one setting at a time and rerun rather than stacking multiple weak exports.
Browser memory and CPU bound large jobs. Close unused tabs, try a smaller fixture first, then scale up. Desktop browsers are usually more reliable than phones for heavy media or WASM paths. After finishing, clear Downloads and the tool workspace when files contain personal or customer data.
Skip it as the sole system of record when you need multi-user collaboration, enterprise audit trails, or legally certified processing. Use your approved platform for those cases, and treat this page as a fast local assistant. Keep authoritative masters outside the browser session.