Texto a Voz — Herramienta online gratis

Free Text to Speech Converter — Listen to Any Text Online

Herramientaolis Text to Speech converts your written text into natural-sounding speech directly in your browser. There are no downloads, no sign-ups, and no character limits. The tool leverages the Web Speech API built into modern browsers, giving you access to dozens of voices across multiple languages without any Herramientaolis server processing your text.

Whether you are proofreading an article, practicing a presentation, creating audio content for accessibility, or simply want to hear how text sounds when spoken aloud, this free TTS tool does the job instantly. The tool itself sends your text nowhere. Note that some browser voices (for example online voices in Chrome or Edge) are provided by the browser vendor's speech service; choose a local voice if the text is sensitive.

Why Use a Browser-Based TTS Herramienta?

• Privacidad first — your text never leaves your machine. No cloud API calls, no data logging.
• Zero cost — commercial TTS APIs charge per character. Browser synthesis is free and unlimited.
• Instant results — no waiting for server processing. Speech starts the moment you press Play.
• Multiple voices — access 20 to 100+ voices depending on your browser and operating system.
• Adjustable parameters — fine-tune speed from 0.5x to 2x and pitch from low to high.

Supported Browsers and Voice Counts

The Web Speech API is supported in all modern browsers, but voice availability varies significantly. Google Chrome on desktop typically offers 20 or more voices including high-quality Google voices. Microsoft Edge provides access to Azure Neural voices, which sound remarkably natural. Firefox supports the API but usually offers fewer voices. Safari on macOS and iOS uses Apple's built-in voices, which are also high quality.

Voices are loaded asynchronously by the browser, so the dropdown may take a second to populate after page load. If you see only one or two voices initially, wait a moment and the full list will appear.

Use Cases for Text to Speech

• Proofreading — hearing your text read aloud catches errors your eyes miss. Awkward phrasing and typos become obvious.
• Accessibility — help visually impaired users consume content. Screen readers use the same underlying API.
• Language learning — hear correct pronunciation in dozens of languages. Switch voices to hear different accents.
• Presentations — practice timing by listening to your script at normal speed. Adjust speed to match your target pace.
• Content creation — generate quick voice-overs for videos, podcasts, or social media clips.

Word Highlighting and Progress Tracking

As the speech engine reads your text, the tool highlights the current word being spoken using the onboundary event. This real-time visual feedback helps you follow along, making it especially useful for language learning and proofreading. You can see exactly where the reader is at any moment.

Downloading Speech as Audio

The tool attempts to capture the speech output using the MediaRecorder API with an AudioContext and MediaStreamDestination. When supported (primarily Chrome desktop), you can download the spoken text as a WebM audio file. Due to browser security restrictions, this capture method does not work in all browsers. If download is unavailable, a note explains the limitation and suggests alternatives like screen recording software.

Speed and Pitch Controls Explained

The speed slider ranges from 0.5x (half speed, great for language learning) to 2x (double speed, for quick reviews). The default is 1x, which matches normal conversational pace of about 150 words per minute. The pitch slider adjusts the tonal quality — lower values produce a deeper voice, higher values a more energetic one. Both can be adjusted before or during playback.