YouTube Shorts voiceover

Text to Speech for YouTube Shorts

Generate clean, natural AI voiceovers tailored for 60-second mobile retention. Download MP3 or 24 kHz WAV audio with full commercial monetization rights.

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Shorts timing and captions

Working tool

YouTube Shorts voiceover studio

Target a 15, 30, 60, or 90-second Short and export the voice track with edit-ready captions.

0 characters
Show format, timing, and saving settings
Fix how a word is said

Add a word the voice gets wrong and spell it the way it should sound. The fix is used every time you generate, and your script stays exactly as you typed it. Saved in this browser only.

    Source files are parsed locally. In Cloud mode, only the selected text sections are sent for speech generation. In-browser mode keeps both the source and generated speech on this device.

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    Short-form retention

    Voice guide for YouTube Shorts

    Smartphone speakers compress dynamic range. These four Kokoro voices have distinct frequency profiles that cut through mobile background noise without fatiguing listeners.

    Adam

    Authoritative & direct

    History facts, tech breakdowns, and finance hooks where credibility in the first 3 seconds is crucial.

    Nova

    Energetic narrator

    Fast-paced listicles, life hacks, and commentary that needs to sustain high energy throughout.

    River

    Calm & expressive

    Storytelling, mystery breakdowns, and philosophical Shorts that benefit from a natural, reflective pace.

    Fenrir

    Deep & cinematic

    True crime, movie recaps, and dramatic hooks that need heavy low-end presence on smartphone speakers.

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    Creator workflow

    How to produce high-retention Shorts audio

    1. 01

      Write a tight 60-second script

      Shorts can run up to three minutes, but this workflow aims at the 60-second format. That is about 125 to 145 words, which leaves room for a beat at the end instead of a hard cut-off.

    2. 02

      Choose a voice that cuts through mobile audio

      Pick clear, energetic voices like Nova, Adam, or Sky. Avoid flat or overused default voices that cause viewers to swipe away.

    3. 03

      Set pacing to 1.1x speed

      YouTube Shorts viewer retention peaks when delivery is crisp and confident. Bump playback speed slightly to keep momentum.

    4. 04

      Import into your timeline and mix

      Download MP3 or 24 kHz WAV audio, drop it into Premiere, DaVinci, or CapCut, duck your background music to -18 dB, and render.

    Three retention rules for YouTube Shorts audio

    YouTube's Shorts algorithm prioritizes view duration and swipe-away rate above all else. How your voiceover sounds in the first three seconds determines whether viewers stay or swipe.

    1. Hook before breath

    Never start a Short with a generic greeting ("Hey guys, today I'm going to show you..."). Cut straight to the conflict or unusual premise. Start the first syllable on frame 1.

    2. Keep the music ducked -18 dB

    Trending YouTube audio helps discoverability, but creators often leave the music bed too loud. If words blur into the track on a phone at medium volume, viewers swipe away. Keep the voice prominent.

    3. Avoid monotonous cadence

    Old robotic TTS engines read every sentence at the exact same pitch and interval. Kokoro neural models vary intonation naturally based on punctuation. Use question marks, commas, and short sentences to keep delivery punchy.

    Best practices

    Editing tips for short-form audio

    Most of what makes a Short sound finished happens after you download the file.

    • 01

      Budget the words before you generate

      Hook, body, payoff: about 3 seconds, 40 seconds, and 15 seconds. At 150 words a minute that is roughly 145 words, far under the 5,000-character limit for one generation. Write to the time first and generate second.

    • 02

      Trim the silence in your editor

      The voices leave small breath pauses between sentences. They sound fine in a ten-minute video and drag in a 45-second one. Cut any gap longer than about a quarter of a second.

    • 03

      Pick a voice people have not heard 500 times

      The built-in TikTok and CapCut voices are on a huge number of Shorts, and regular viewers have learned to tune them out. A less common voice such as Sky, Puck, or Echo gives your hook a fairer hearing.

    • 04

      Nudge speed in the editor, not twice

      Generate at 1.1x for most Shorts and 1.2x for fast hooks. Past about 1.25x the voice starts to sound squeezed. If you want to try a different pace, change it once in the editor rather than stacking speed changes.

    FAQ

    Text to Speech for YouTube Shorts FAQs

    01

    Can you monetize YouTube Shorts that use text-to-speech voiceovers?

    Yes, as long as the video itself is original. The YouTube Partner Program rules go after mass-produced, repetitive, or re-uploaded content, not the fact that the narration was synthesized.
    02

    How many words can fit in a 60 second YouTube Short?

    At a conversational speaking rate of 140 to 150 words per minute, aim for 125 to 140 words. If your video includes sound effects or visual pauses, keep it closer to 110 words.
    03

    Do I need to check the "Altered or Synthetic Content" box on YouTube for TTS?

    YouTube requires disclosure for realistic synthetic media that depicts real people saying or doing things they did not do. Standard narration over gameplay, tutorials, or educational footage does not trigger a penalty, but toggling the disclosure in YouTube Studio is good practice if you want to be completely transparent.
    04

    Which audio format is best for YouTube Shorts editors?

    Choose 24 kHz WAV in the format menu when the file is going into an editor. WAV preserves clean transients and full dynamic range, preventing compression artifacts when YouTube re-encodes your video audio for mobile playback.
    05

    Are the voices free for commercial use on YouTube?

    Yes. All audio generated on FreeTextToSpeech includes full commercial rights. You can monetize your Shorts, brand sponsorships, and affiliate videos with zero royalties or mandatory attribution.
    06

    How do I get captions in sync with the AI voice?

    Caption the audio, not the script. CapCut and Premiere can both auto-transcribe the audio file you drop in, so the caption timing follows the actual read. Pasting the script as captions tends to drift, because the voice does not pace itself the way you typed.
    07

    Can I switch voices partway through a Short?

    Yes. Generate each part separately and put the switch on a cut, not in the middle of a sentence. A gap of roughly 100 ms between the two clips keeps it from sounding like a glitch. It works best for a twist or a punchline, where a new voice reads as a deliberate change.

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    Create your Shorts voiceover now

    No account, no fees, instant MP3 or 24 kHz WAV downloads with commercial rights.

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    visual guide showing an AI voice studio with scripts, voice lanes, dialogue tracks, and audio export

    Visual guide

    An AI voice studio workflow for generating narration, dialogue, and spoken vocal audio.