[2026] 6 Best Free AI Text-to-Speech Sites! Complete Guide

I want to know about speech synthesis sites that can be used for free!

Free speech synthesis sites that convert text into natural-sounding audio are attracting a lot of attention!

There are many situations where read-aloud audio is necessary, such as video production, presentation materials, and language learning.

However, recording it yourself can be surprisingly difficult.

In such cases, free speech synthesis sites that can be used at no cost are very convenient!

With advances in AI technology, it has become possible to easily create natural audio that sounds as if a real person is speaking.

Moreover, sites that can be used for free have emerged!

In this article, we will carefully select and introduce recommended speech synthesis sites, ranging from free services to high-quality sites utilizing AI technology.

Why not use this article as a guide and try out some recommended speech synthesis sites yourself?

[Free] Recommended AI Speech Synthesis Sites You Can Use for Free Right Now

For those looking for a speech synthesis site, we recommend "Ondoku."

"Ondoku" is a free speech synthesis site using the latest AI technology.

No installation is required, and it can be used immediately from your browser.

Its biggest attraction is the ability to easily generate high-quality audio just by entering text.

With a wide variety of voices including women, men, and children, you can have text read aloud in a clear, easy-to-hear voice.

Moreover, "Ondoku" is free!

You can read text aloud for free up to 1,000 characters without registration, and up to 5,000 characters after registering.

Since commercial use is OK, you can use it with peace of mind for video monetization or business purposes.

If you're unsure about which speech synthesis site to choose, why not start by using "Ondoku"?

Basic Knowledge of Speech Synthesis Sites. What are the Characteristics of Free Read-Aloud Methods?

First, let's briefly explain the characteristics of speech synthesis sites that can be used for free.

Speech Synthesis Sites Allow You to Read Text Aloud for Free

A speech synthesis site is a web service that automatically converts input text into audio.

By simply entering the sentences you want to have read aloud, you can synthesize easy-to-hear audio files that sound as if they were read by a human.

Synthesized files can be downloaded in convenient formats such as MP3.

Previous speech synthesis technology could only synthesize robotic voices, but today, it is possible to synthesize natural, human-like voices using the latest AI technology.

Currently, free speech synthesis sites are especially recommended.

By using a speech synthesis site through a browser, you can synthesize high-quality audio for free.

Since speech synthesis sites perform the read-aloud processing in the cloud, you can utilize the latest AI speech synthesis technology regardless of the performance of your own computer.

Tasks that previously required hiring a professional narrator can be completed instantly using a speech synthesis site.

What are the Merits of Free Speech Synthesis Sites?

Free-to-use speech synthesis sites offer many advantages.

First, they are easy to use without the need for installation.

As long as you have a browser, you can access speech synthesis sites from any device immediately.

You can synthesize audio with the latest AI from any environment, including Windows, Mac, Linux, iPhone (iOS), and Android.

The fact that a high-performance computer is not required is also a major merit of free speech synthesis sites.

Since processing using AI technology is performed in the cloud, latest speech synthesis technology can be used even on old computers.

Low cost is another feature of speech synthesis sites.

Tasks that would cost tens of thousands of yen when hiring a professional narrator can be completed for free with a free speech synthesis site.

Moreover, it is also possible to use the synthesized audio files for commercial purposes.

What is the Difference Between Browser-based and Installation-based Types?

Methods for AI speech synthesis include speech synthesis sites used in a browser and speech synthesis software installed on a computer.

We recommend browser-based speech synthesis sites!

The greatest attraction is the ease of being able to start immediately on any PC or smartphone.

With the free speech synthesis site "Ondoku," you can read text aloud with the latest AI technology just by accessing it.

Speech synthesis software that you install is characterized by the fact that it can be used even in offline environments.

However, to perform high-quality speech synthesis utilizing AI technology, a high-performance computer is required.

Additionally, many installation-based speech synthesis programs are paid software that cannot be used without purchasing a package.

• Beginners
• Those who want to easily try speech synthesis
• Those who want to create audio right now

For these people, free speech synthesis sites are recommended.

[Free] 6 Recommended Free Speech Synthesis Sites

I want to know about recommended speech synthesis sites!

Now, let's take a detailed look at the recommended speech synthesis sites!

1. Ondoku
2. TTSMaker
3. ttsMP3.com
4. Yukumo!
5. Narakeet
6. TTSFree

1. Ondoku | Recommended High-Quality Free AI Speech Synthesis Site

"Ondoku" is a free speech synthesis site recommended for those who want to create read-aloud audio.

The greatest feature is the ability to read aloud with natural voices utilizing the latest AI technology.

A wealth of voices, including women, men, and children, are available, allowing you to choose the most suitable voice for your purpose.

Listen to 16 types of voices from the text-to-speech software Ondoku for free. Change impressions with pitch variations.

Ondoku has 16 types of Japanese voices. Of course, both male and female voices are available. We have made it possible to listen to 8 commonly used Japanese voices and how they sound when the pitch is adjusted.

Furthermore, speech synthesis is possible in multiple languages such as English, French, German, Chinese, and Korean.

It also features a conversation function, so you can create dialogue-style audio using multiple voices.

Adjustments such as changing the pitch and speed of the voice, or using SSML (Speech Synthesis Markup Language) tags, are also possible.

Free for Commercial Use. Recommended for Monetization and Business Use

"Ondoku" is free for commercial use.

It is safe to use when you want to monetize on video sites like YouTube, or when using it for business purposes such as announcements or call centers.

For more details on commercial use, please also see this article.

What you can do with Ondoku. Regarding commercial use (business use) and prohibited acts.

Commercial use (business use) is possible with Ondoku. Whether individual or corporate, any use for the purpose of gaining profit such as money directly or indirectly is commercial use. However, please note that prohibited acts are established in Ondoku. This time, we will explain what you can and cannot do...

"Ondoku" is a Free AI Speech Synthesis Site That Can Be Used for Free

Moreover, "Ondoku" is free!

You can read aloud and download for free up to 1,000 characters without registration, and up to 5,000 characters after registering.

Since it can be used immediately from a browser without installation, why not first experience AI speech synthesis with "Ondoku"?

2. TTSMaker | A Global and Multi-functional Speech Synthesis Site

TTSMaker is a speech synthesis site attractive for its many functions.

Since it supports multiple languages, it can be utilized for global content production.

Fine parameter adjustments such as voice speed, pitch, and volume are also possible.

While the free version has limitations, basic speech synthesis can be used for free.

It is a recommended speech synthesis site as an option when creating audio for overseas markets.

3. ttsMP3.com | A Speech Synthesis Site Adopting Amazon Polly

ttsMP3.com is a speech synthesis site that adopts the AI speech synthesis engine "Amazon Polly."

It can synthesize text in languages supported by Amazon Polly into male, female, or children's voices.

It also supports SSML, allowing for detailed pronunciation adjustments.

Additionally, as the site name suggests, downloading files in MP3 format is also possible.

This is a recommended free speech synthesis site for those who want to try Amazon Polly.

4. Yukumo! | A Speech Synthesis Site Where You Can Use Yukkuri Voices

Yukumo! is a speech synthesis site specializing in Yukkuri voices.

Using a speech synthesis engine called AquesTalk, it can read text aloud in a characteristic "Yukkuri voice" (monotone voice).

It is ideal for creating audio for "Yukkuri Commentary" and "Yukkuri Gameplay" videos popular on YouTube and Niconico Douga.

Since it can be used from a browser without installation, it is recommended for those who want to easily create Yukkuri videos.

While it is a free speech synthesis site, caution is required for commercial use.

Non-commercial use by individuals is free, but a license purchase is required for commercial use.

5. Narakeet | A Speech Synthesis Site Strong for Educational and Presentation Purposes

Narakeet is a speech synthesis site strong for purposes such as education and presentations.

It supports many languages and offers special plans for educational institutions, making it ideal for creating learning content.

Although it is a speech synthesis site that can be used for free, there are functional limitations.

It is a convenient speech synthesis site when you want to produce content for overseas markets or in multiple languages.

6. TTSFree | A Simple Speech Synthesis Site

TTSFree is a speech synthesis site attractive for its simplicity.

With an intuitive interface, you can operate it without hesitation even if you are not used to speech synthesis sites.

It supports major languages including Japanese and English.

Created audio can be downloaded in MP3 format.

[Free] Detailed Explanation of How to Use Free Speech Synthesis Sites

How do you use a free speech synthesis site? Is it easy to use?

From here, we will explain how to use a free speech synthesis site, using "Ondoku" as an example!

How to Read Text Aloud for Free with the Free Speech Synthesis Site "Ondoku"

Synthesizing audio from text on the free speech synthesis site "Ondoku" is very easy.

First, access the official "Ondoku" website via your browser.

Once you open the top page, enter the sentences you want to have read aloud into the text input field.

You can read up to 1,000 characters for free, and up to 5,000 characters after registering!

Next, select the type of voice.

For Japanese, you can choose from 16 types of voices.

Please take a look at this article where you can listen to the read-aloud voices.

Listen to 16 types of voices from the text-to-speech software Ondoku for free. Change impressions with pitch variations.

Ondoku has 16 types of Japanese voices. Of course, both male and female voices are available. We have made it possible to listen to 8 commonly used Japanese voices and how they sound when the pitch is adjusted.

Read-aloud speed and pitch can also be easily adjusted with sliders.

Settings are now complete.

Click or tap the "Read aloud" button.

The speech synthesis process is completed in just a few seconds.

The display will change, and the read-aloud audio will play.

After checking the audio, if there are no problems, save it as an MP3 file using the "Download" button.

This completes the process of synthesizing audio for free on "Ondoku."

In this way, anyone can easily read text aloud with the free speech synthesis site "Ondoku!"

Since it can be used for free, why not first try synthesizing audio yourself using "Ondoku"?

What are the Points for Synthesizing More Natural Audio with "Ondoku"?

By refining a few points, you can create even more natural audio with "Ondoku!"

First, adjust the read-aloud speed.

For general explanations, the standard speed is effective, while for important content, setting it slightly slower is better.

Also, with "Ondoku," it is possible to refine how pauses are taken.

The rhythm of the reading changes based on the position of punctuation marks.

If you want to create natural pauses, refining the divisions of your sentences is also a key point.

This article explains how to adjust pauses, so please take a look!

How to adjust pauses and blank time in Ondoku reading [2 types]

One of the needs of Ondoku users is "to have slightly longer pauses." If it's a "pause" adjustment where you want to leave a little space, there are two types of adjustment methods: 1. Punctuation 2. SSML.

With "Ondoku," Speech Synthesis is Easy on Smartphones and Tablets Too!

With the free speech synthesis site "Ondoku," it can be used on iPhone, iPad, Android smartphones, and tablets just like on a PC!

The method of use on a smartphone is basically the same as on a computer.

Just by opening the "Ondoku" top page on your smartphone's browser, you can easily synthesize audio for free.

If you download the read-aloud audio to your smartphone, you can also use it in Instagram and TikTok videos.

If you want to create audio on a smartphone or tablet, we recommend the free speech synthesis site "Ondoku."

[Ondoku] How to easily use it like an app from the home screen on iPhone [No installation required]

You might want to access a web browser service like Ondoku as easily as an app for iPhone from the home screen. In such cases, you can use Safari's "Add to Home Screen" feature or a shortcut. We explain how to do it with videos and images.

Explaining the Points to Keep in Mind When Choosing a Free Speech Synthesis Site

We will explain in detail the points to avoid failure when choosing a speech synthesis site!

Select a Free Speech Synthesis Site Suitable for Your Purpose

When choosing a speech synthesis site, it is important to choose according to your purpose.

For video production purposes, an AI speech synthesis site capable of high-quality reading is recommended.

By using "Ondoku," you can create easy-to-hear audio with natural intonation and leave a positive impression on your viewers.

When you want to create Yukkuri videos, a specialized speech synthesis site like "Yukumo!" is best.

Also, when using it for language learning, choose a speech synthesis site that supports multiple languages.

Since "Ondoku" supports more than 48 languages, you can easily create teaching materials for pronunciation practice, listening, and shadowing.

[Ondoku] Listen to the types of voices and sample audio for supported languages

Here, we introduce the supported languages and sample audio of Ondoku.

What is important for business purposes is to choose a speech synthesis site that allows commercial use.

By using a speech synthesis site that allows commercial use for free, you can synthesize high-quality, professional audio while keeping costs down.

A speech synthesis site that is OK for commercial use is also safe when you want to monetize YouTube.

Recommended Comparison Points for Free Speech Synthesis Sites

When comparing speech synthesis sites, the most important thing to focus on is the naturalness of the voice.

If it is a speech synthesis site that utilizes the latest AI technology, it can read text aloud in a natural, human-like voice.

It is also recommended to choose by listening to samples on the website.

Listen to 16 types of voices from the text-to-speech software Ondoku for free. Change impressions with pitch variations.

Ondoku has 16 types of Japanese voices. Of course, both male and female voices are available. We have made it possible to listen to 8 commonly used Japanese voices and how they sound when the pitch is adjusted.

Whether it can be used commercially is, of course, also important.

Among free speech synthesis sites, there are sites that allow commercial use and sites that do not.

To avoid situations like "I went through the trouble of making a video, but the narration audio was not allowed for commercial use," it is recommended to confirm that commercial use is permitted before using it.

What you can do with Ondoku. Regarding commercial use (business use) and prohibited acts.

Commercial use (business use) is possible with Ondoku. Whether individual or corporate, any use for the purpose of gaining profit such as money directly or indirectly is commercial use. However, please note that prohibited acts are established in Ondoku. This time, we will explain what you can and cannot do...

Things to Keep in Mind When Using Free Speech Synthesis Sites Commercially

When using a free speech synthesis site commercially, it is also important to understand what kind of use qualifies as commercial use.

Generally, monetizing YouTube videos falls under commercial use.

Also, other monetization functions such as memberships and Super Chat are mostly included in the scope of commercial use.

Even for channels operated by individuals, monetization constitutes commercial use.

Of course, if a corporation uses a free speech synthesis site, it is considered commercial use.

When using it for corporate promotional videos or product explanation videos, check if commercial use is permitted.

Conditions for commercial use vary significantly depending on the site.

Even when using "Ondoku" for free, commercial use is OK by providing credit.

(For more details on how to provide credit for "Ondoku," please see here)

How to write credit notation for Ondoku. Examples and points to note.

We are more than happy for you to use Ondoku for free. However, if you use it for free, credit notation is mandatory. We have received questions like "Specifically, how should I write the notation?" This time, we will explain how the credit notation for free use of Ondoku should be...

When using a free speech synthesis site commercially, be careful to use it according to the terms of use.

Why Not Conveniently Read Text Aloud with a Free Speech Synthesis Site?

In this article, we introduced recommended free speech synthesis sites that can be used easily without installation.

The six speech synthesis sites introduced this time each have different features.

If you are looking for high-quality AI voices, "Ondoku" is best, and for Yukkuri videos, "Yukumo!" is ideal.

Even with speech synthesis sites that can be used for free, it is important to choose the most suitable service according to your purpose.

For beginners, we recommend starting with the free speech synthesis site "Ondoku," which anyone can use easily.

"Ondoku" allows you to read up to 5,000 characters for free.

Since commercial use is also OK, it can be utilized for various purposes such as video narration, information broadcasts, and call centers.

Why not first experience a free speech synthesis site for yourself at no cost?