Mojiokoshi-san: Free OCR Tool for Image & PDF to Text
June 8, 2025


Recently, with the remarkable development of OCR (Optical Character Recognition) technology, the number of websites and services that can transcribe text using AI has significantly increased.
However,
- Free to use
- Easy to use
- Supports multiple languages
- Convenient for data saving
There are still very few such websites and services available.
That's why there's a service I highly recommend.
"Mojiokoshi-san" is the perfect service that fulfills all these desires.
It supports not only Japanese text extraction but also various languages such as English, Chinese, Korean, and Spanish.
It can perform OCR (text recognition) on image files and PDF files with high accuracy.
It's a very convenient website, so why not give it a try?
Convert Images and PDFs to Text with "Mojiokoshi-san"
Mojiokoshi-san is an online OCR service that can be used for free, allowing you to extract text using AI character recognition from:
- Images
- Audio
- Videos
- PDFs
It supports 100 languages, including Japanese and English.
Since it can be used on a website,
- Smartphones
- PCs
- Tablets
You can use the OCR (text recognition) function from any device connected to the internet.
The website is in Japanese, and the instructions for use are detailed and very easy to understand.
If you're looking for a site that can recognize text from images and PDF files, "Mojiokoshi-san" is highly recommended!
Supported File Formats for Mojiokoshi-san
The file formats supported by "Mojiokoshi-san" for OCR (text recognition) are as follows:
- [Image Files]
Supported file formats: .jpg, .jpeg, .png, .webp - [PDF Files]
Under 50MB - [Audio Files]
Audio duration within 90 minutes
Supported file formats: .mp3, .wav, .wma, .mp4, .aifc, .flac, .aac, .aiff, .aifc - [Video Files]
Audio duration within 90 minutes
Supported file formats: .mp4, .mov, .avi, .flv, .mkv, .webm, .wmv, .3gp
Since you can use both image/PDF OCR (text recognition) and audio/video transcription from the same website, it can handle a wide range of cases.
Important Notes When Uploading Images
If the text within an image is rotated by:
- 90 degrees
- 180 degrees
- 270 degrees
It cannot be recognized.
You must correct the text orientation before starting the transcription.
After uploading an image, rotation buttons will appear on the top right and top left.
Rotation button
click to adjust the image orientation.
Extracted File Formats
The results transcribed by OCR (Optical Character Recognition) can be saved as:
- .txt
- .srt
The transcription results are displayed in a text box, allowing for immediate editing and saving.
You can use Mojiokoshi-san without free membership registration. However, if you register for a free account on the site, you can review your transcription history and download past data.
By logging into your user page on the site, you can:
- Review transcribed images (audio/video)
- .txt files
- .srt files
from your history or download them again.
Mojiokoshi-san's Free Image Limit
The amount of text you can transcribe varies by plan.
- Non-member: ¥0/month (approx. $0/month)
Annual audio: 1 minute/month
Image count: 3 images/month - Free member: ¥0/month (approx. $0/month)
Annual audio: 5 minutes/month
Image count: 10 images/month
If you need to recognize and transcribe a lot of text, one option is to subscribe to a paid plan for just one month.
Mojiokoshi-san's Paid Plans
- Basic Plan: ¥1000/month (approx. $7/month)
Annual audio: 4 hours/month
Image count: 500 images/month - Value Plan: ¥2000/month (approx. $14/month)
Annual audio: 10 hours/month
Image count: 1200 images/month - Premium Plan: ¥3000/month (approx. $20/month)
Annual audio: 20 hours/month
Image count: 3000 images/month
Want to conveniently use OCR (Optical Character Recognition) with "Mojiokoshi-san"?

Similar websites have existed before, but many had high pricing plans or were difficult to use.
However, with Mojiokoshi-san, you can instantly solve the problem of "I want to convert text from an image."
If you know anyone struggling with transcribing text from images, they might be delighted if you tell them about Mojiokoshi-san!
Mojiokoshi-san's OCR (Optical Character Recognition) feature is free and easy to use, so please give it a try!
■ AI transcription service "Mr. Transscription"
"Mr. Transcription" is an online transcription tool that can be used from zero initial cost and 1,000 yen per month (* free version available).
- Supports more than 20 file formats such as audio, video, and images
- Can be used from both PC and smartphone
- Supports technical terms such as medical care, IT, and long-term care
- Supports creation of subtitle files and speaker separation
- Supports transcription in approximately 100 languages including English, Chinese, Japanese, Korean, German, French, Italian, etc.
To use it, just upload the audio file from the site. Transcription text is available in seconds to tens of minutes.
You can use it for free if you transcribe it for up to 10 minutes, so please try it once.
Email: mojiokoshi3.com@gmail.com
Transcription for audio / video / image transcription. It is a transcription service that anyone can use for free without installation.
- What is Mr. Transcription?
- Transcript images, sounds, and videos with Mr. Transcription
- Free registration
- Rate plan
- manual