Heart
female voice · A · Kokoro
warm · natural
Text to Speech for Proofreading Essays
Proofread essays, academic papers, and manuscripts by listening. Catch typos, run-on sentences, and awkward phrasing with natural offline AI voice read-aloud.
Try it now — no signup or per-character charge
Browser audio synthesis; text handling and network needs depend on the selected engine and language.
Available English Voices
Compare 28 Kokoro voices + 9 Kyutai/Pocket for english with a fixed sample. Voice type, grade, and traits are catalog cues rather than a quality guarantee—use the same part of your real script before choosing one.
Kyutai voices run on Pocket TTS only (voice-cloning via hf://kyutai/tts-voices/…), not Kokoro.
Kokoro TTS — 28 voices
| Voice | Type | Catalog cues | Preview |
|---|---|---|---|
| female · A | warm · natural | ||
| female · A- | expressive | ||
| female · B- | professional | ||
| female · C | neutral | ||
| female · C+ | melodic | ||
| female · D | Compare with your script | ||
| female · C+ | clear | ||
| female · C | modern | ||
| female · D | Compare with your script | ||
| female · C+ | warm | ||
| female · C- | bright | ||
| male · F+ | Compare with your script | ||
| male · D | resonant | ||
| male · D | Compare with your script | ||
| male · C+ | deep | ||
| male · D | Compare with your script | ||
| male · C+ | professional | ||
| male · D | Compare with your script | ||
| male · C+ | playful | ||
| male · D- | Compare with your script | ||
| female · B- | professional | ||
| female · D | Compare with your script | ||
| female · C | Compare with your script | ||
| female · D | Compare with your script | ||
| male · D | Compare with your script | ||
| male · C | Compare with your script | ||
| male · C | Compare with your script | ||
| male · D+ | Compare with your script |
Bella
female voice · A- · Kokoro
expressive
Nicole
female voice · B- · Kokoro
professional
Alloy
female voice · C · Kokoro
neutral
Aoede
female voice · C+ · Kokoro
melodic
Jessica
female voice · D · Kokoro
Compare this voice with your own script
Kore
female voice · C+ · Kokoro
clear
Nova
female voice · C · Kokoro
modern
River
female voice · D · Kokoro
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Sarah
female voice · C+ · Kokoro
warm
Sky
female voice · C- · Kokoro
bright
Adam
male voice · F+ · Kokoro
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Echo
male voice · D · Kokoro
resonant
Eric
male voice · D · Kokoro
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Fenrir
male voice · C+ · Kokoro
deep
Liam
male voice · D · Kokoro
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Michael
male voice · C+ · Kokoro
professional
Onyx
male voice · D · Kokoro
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Puck
male voice · C+ · Kokoro
playful
Santa
male voice · D- · Kokoro
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Emma
female voice · B- · Kokoro
professional
Alice
female voice · D · Kokoro
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Isabella
female voice · C · Kokoro
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Lily
female voice · D · Kokoro
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Daniel
male voice · D · Kokoro
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Fable
male voice · C · Kokoro
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George
male voice · C · Kokoro
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Lewis
male voice · D+ · Kokoro
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Kyutai / Pocket TTS — 9 voices (Pocket only)
| Voice | Type | Preview |
|---|---|---|
| male · B+ · calm · steady | ||
| male · B · youthful · energetic | ||
| female · B · clear · professional | ||
| female · B+ · casual · character | ||
| female · B · gentle · narrative | ||
| male · B · audiobook · warm | ||
| male · B · narrator · classic | ||
| male · B · classic · steady | ||
| female · B · british · deep |
calm · steady
youthful · energetic
clear · professional
casual · character
gentle · narrative
audiobook · warm
narrator · classic
classic · steady
british · deep
Enhanced wav via ai-coustics where available. NC datasets (expresso/ears) excluded. Use Pocket TTS to generate.
Listening to your writing read aloud is one of the most effective proofreading techniques. When you read silently, your brain anticipates text and glosses over typos, missing words, and clumsy sentence structures. Hearing your draft in a natural AI voice immediately highlights awkward phrasing, pacing issues, and grammatical mistakes.
Why proofread with text to speech?
- Catch blind spots: your ears notice repeated words and missing prepositions that your eyes skip over
- Audit pacing and flow: identify run-on sentences and unbalanced clauses instantly
- Check tone and rhythm: hear how dialogue and narrative rhythm sound to a real audience
- Reduce eye strain: proofread long manuscripts, research papers, and chapters hands-free
- 100% private: confidential academic drafts, unreleased articles, and client manuscripts stay in your browser
How to proofread with OfflineTTS: 1. Paste your draft or chapter into the text area (up to 50,000 characters per batch). 2. Choose a clean narrator voice (e.g. Heart for expressive prose or Michael for formal academic articles). 3. Enable subtitle timing to follow along with synchronized word highlighting. 4. Listen closely and note phrasing where the voice hesitates or sounds unnatural — that is where revisions are needed.
Auditory Proofreading Complements Visual Editing
Listening to your manuscript with a neural TTS voice activates auditory language processing, revealing repetitive words, awkward transitions, clashing rhythms, and missing punctuation that the eye glosses over during silent reading. For essays, dissertations, and published books, a combined visual and auditory review significantly increases error detection rates.
Use standard punctuation to control pacing: periods for complete stops, commas for breathing pauses, and em dashes for parenthetical thoughts. If the AI voice stumbles over a phrase, that sentence is frequently a candidate for simplification or grammatical restructuring.
Maintain Confidentiality for Unpublished Drafts and Sensitive Manuscripts
OfflineTTS executes English Kokoro phonemization and speech synthesis locally in your browser. Unpublished academic papers, proprietary legal briefs, and creative manuscripts remain on your computer without being uploaded to third-party synthesis APIs.
Always perform a final manual pass before submission. While neural TTS accurately pronounces standard vocabulary, specialized academic terminology, foreign loanwords, and complex mathematical notation should be checked by a domain expert.
Why Use Our English Text to Speech
👂
Catch Hidden Typos
Hear missing words, accidental duplicates, and punctuation errors that silent reading overlooks.
🔒
100% Confidential & Private
Unpublished manuscripts, research papers, and sensitive drafts are processed locally in your browser.
⚡
Instant Audio Playback
Generate speech with one click. Adjust speed to 1.1x or 1.25x for rapid proofing sessions.
📝
Synced Subtitle Highlight
Follow the text with optional karaoke-style word highlighting to spot exact line locations.
Popular Use Cases
🎓 Academic Papers & Essays
Audit clarity, thesis flow, and citations in college essays, dissertations, and research papers before submission.
📖 Novels & Creative Fiction
Test dialogue naturalness, character voice pacing, and narrative rhythm across full manuscript chapters.
💼 Business Reports & Memos
Ensure executive summaries, proposals, and emails are clear, professional, and free of embarrassing errors.
📰 Articles & Blog Posts
Review editorial tone, heading transitions, and readability before publishing content online.
How It Works
1
Paste Text
Enter your english text (up to 50,000 chars)
2
Choose Voice
Pick from english voices
3
Generate
AI creates speech on your device
4
Download
Save as WAV or MP3
English Text to Speech — FAQ
Is English text to speech free?
Yes. OfflineTTS does not charge per character and requires no signup or API key. Audio synthesis runs in your browser with the engine you select.
Does English text to speech work offline?
Offline behavior depends on the selected engine and language. Supertonic, Piper, Kitten, Pocket TTS, and English Kokoro can synthesize locally after their model files download. Non-English Kokoro uses the OfflineTTS phonemization service before audio is generated on your device.
Is my English text data private?
Audio synthesis runs locally in your browser. Fully local-capable engine and language combinations keep the input on your device after model download. Non-English Kokoro sends plain text to the OfflineTTS phonemization service and receives pronunciation data before local synthesis.
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No signup, no per-character fee, and browser-based audio synthesis.
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