【Ondoku】Cannot download audio files! Files not playing correctly! How to solve these problems
Jan. 26, 2026
Hello, in this article, we will explain troubleshooting for downloading and playing Ondoku files.
We believe most people who use Ondoku have used the download function at least once.
Converting text to speech and downloading it as an mp3. This feature is very convenient, isn't it?
The uses for downloaded files vary depending on the user.
- Using them for YouTube videos
- Using them for internal training videos
- Utilizing them for certification studies
- Using them to make the most of spare time during commutes
It is no exaggeration to say that the download function is the most valued feature in Ondoku.
Such an important download.

We have received inquiries like this.
In such cases, we will introduce how to solve the problem.
Normal Audio Download Behavior of Ondoku

In Ondoku, when downloading, you can easily download from the download button as shown in the image.
- Click the Read Aloud button
- Download from the download button
It is a very easy and simple process.
It is also possible to download previously read text from your history.
However, if an error occurs, you will not be able to download as described here.
For example, are you experiencing these symptoms?
- The download button is not displayed.
- The download button exists, but the screen to select the save location does not appear.
- An error message appears, and the desired audio cannot be downloaded.
- The text read aloud just before is downloaded.
- The audio sounds correct when pressing the play button on the web, but the audio cuts out when downloaded.
These five problems can be solved very easily.
We will show you how to solve them.
Download Button is Not Displayed

If an error occurs where the download button is not displayed even after clicking the "Read Aloud button," there are two possible causes.
- Some kind of blocking function exists in the usage environment.
- An error is occurring on the server.
The download button may not be displayed due to compatibility with your network environment, computer antivirus software, etc. Please review your usage environment.
If the download button still does not appear, there is a high possibility of a server error, so please contact us via email through the inquiry form.
Download Button Exists, but the Screen to Select the Save Location Does Not Appear
If the download button is displayed but the screen to choose the save location does not appear, it is an error within the user's browser.
When using Google Chrome

First, open the settings screen from "chrome://settings" or "Settings" in the menu.
Once the settings screen is open, please turn on downloads from the Google Chrome browser settings.
For other browsers
Search for "[Your Browser Name] download settings" and check the configuration method.
An Error Message Appears, and the Desired Audio Cannot Be Downloaded
If an error message appears and you cannot download the desired audio, there are three possible causes.
- The limit for usable characters has been reached.
- Characters that cannot be used are included, preventing the reading.
- There is a problem with the user's environment, preventing the reading.
The Limit for Usable Characters Has Been Reached
The character limit is 5,000 characters for free members. For paid members, it ranges from 200,000 to 1,000,000 characters depending on the plan.
If you exceed the number of characters that can be read, an error message "You have reached the limit for characters that can be read" will be played.
If you want to read aloud right now, please purchase a paid plan to add characters.
When Characters That Cannot Be Used Are Included
In this case, the error message "An error has occurred" will be played.
This type of error occurs when trying to read text that includes special characters.
Please remove the special characters and try reading again.
When There Is a Problem with the User's Usage Environment
Due to compatibility issues with the browser or network connection being used, an error "An error has occurred" may appear when trying to read text with Ondoku.
In such cases, please try the following:
- Change your browser
- Change your device
- Clear your cache
Please check this page for details.
The Text Read Aloud Just Before is Downloaded
This is often due to an accidental oversight by the user.
In Ondoku, text is converted to audio by clicking the Read Aloud button.
If you are reading text multiple times in succession, you might accidentally forget to press the Read Aloud button.
Then, since the download button is displayed, downloading results in the previous text being played.
Forgetting to Press the Read Aloud Button
This is a major cause.
Please remember to click the Read Aloud button.
Alternatively, you can download previously read text from your history.
Please check if it can be downloaded normally from there.
Audio Sounds Correct on the Web but Cuts Out When Downloaded
If it sounds normal when listening on the web, the created download file is also normal.
It is highly likely a problem with the player used to listen to the audio.
- Change the audio player and play the audio file again
- Or try playing the audio on a different device
Most problems will be solved with these two methods.
At Ondoku, we take received inquiries seriously and provide various types of support.
Your feedback helps Ondoku grow even further.
Please continue to use Ondoku in the future.
We are happy to continue being the best text-to-speech software for you.
■ AI voice synthesis software "Ondoku"
"Ondoku" is an online text-to-speech tool that can be used with no initial costs.
- Supports approximately 50 languages, including Japanese, English, Chinese, Korean, Spanish, French, and German
- Available from both PC and smartphone
- Suitable for business, education, entertainment, etc.
- No installation required, can be used immediately from your browser
- Supports reading from images
To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.
Email: ondoku3.com@gmail.com
"Ondoku" is a Text-to-Speech service that anyone can use for free without installation. If you register for free, you can get up to 5000 characters for free each month. Register now for free