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5 Best Thai OCR Software (Features, Pros, Cons..)

OCR (Optical Character Recognition) has been a hot topic among AI enthusiasts and many people are seeking tools to solve the trouble of editing scanned PDF and image files. Here, we understand the hassle you have to go through in looking for the right OCR tool to get the most accurate result with the simplest way with just a few clicks. It is more difficult when coming to find the best Thai OCR tool as not every OCR tool supports Thai language.
So in this quick guide, we plan to ease your troubles and help you decide what works best for you; worry not, we have done the time-consuming part and narrowed down the 5 Best Thai OCR Tools. All you have to do is check these 5 tools and pick one that meets your needs!

Part 1. 5 Best Thai OCR Tools

1. UPDF - The Most Powerful Thai OCR Software

We know for a fact that all of us yearn for that perfect tool to solve the efficiency + accuracy question when using one Thai OCR software. UPDF is the ultimate answer. It is a powerful Thai OCR tool. Its OCR feature processes all sorts of scanned PDF/image in 38 languages with at least 99% of accuracy. And you can customize the settings for the OCR which can promise you to get the desired contents. You can alsoeEdit, translate, summarize, convert and take full control of how you want on your Thai content after performing OCR. The most important thing you should know is that UPDF can help you retain the format when perfoming OCR and converting the scanned PDF or images to desired formats. So, go ahead, click the below button to download and experience the power of UPDF now.

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thai ocr UPDF

Key features:

Except the OCR features, UPDF has many other advanced features.

  • UPDF has its own UPDF cloud which can store and synchronize PDF files across any device.
  • Take full control of editing texts, images and links within the PDF.
  • Process PDF files at at once with its batch process features.
  • Convert PDF from/to the popular formats like Word, Excel, PPT, etc.
  • UPDF AI assistant to summarize, translate, explain, chat for the PDF per your needs.


  • Extremely fast to process the OCR feature.
  • Easy to master the skills to make the scanned PDF or imaged into editable with its easy to use interface.
  • OCR can work offline.
  • OCR feature will not mess up the original layout of your texts.
  • Translate and summarize Thai content in the scanned PDF or image in one click.
  • Convert your PDF files into image only which can make sure no one can edit your contents in the PDF file.


  • Trial users can only view and experence OCRed contents without the option to copy, edit, and save.

Price: US$35.99 billed annually or US$55.99 for pepertual license for UPDF Pro.

Customer rating: 4.5/5 via G2

OCR Accuracy: 99% accuracy. But it may be a little different based on files your use.

Want to learn more about UPDF? You can read this review of UPDF here, watch the below video tutorial, or download UPDF via the below button to test all the features.

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Also Read: 5 Best Japanese OCR Software (Tested and Reviewed)

2. I2OCR

If quick and easy is  what you need, I2OCR’s Thai OCR online tool may be the best choice for you. It supports over 100 languages. I2OCR not only supports OCR images but also PDF files.

What makes it the best Thai OCR online tool? You may ask. Believe it or not, I2OCR is completely free of charge with unlimited uploads! Meaning, no registration is required.

thai ocr I2OCR

Key features:

  • Allows you to upload image, PDF and enter direct link.
  • You can export to txt, docx, PDF, searchable PDF and HTML files after performing OCR.
  • Translatable the OCRed contents with Google & Microsoft Bing.
  • Batch processing for OCR.


  • Completely free of charge.
  • Easy to access.
  • Batch processing is supported
  • Supports almost all popular languages.


  • Too many ads and it is not clear where you should click.
  • The results you get after OCR may not be in the same layout as the original PDF/image.
  • OCR results is not accurate.

Price: Free

Customer Rating: 2/5

OCR Accuracy: 50%


ABBYY is also a great Thai OCR software. Its OCR features allows you to select the area then start performing. So that you can only get the content you need. Moreover, ABBYY offers other features like editting, filling, organizing as well as comparing PDF documents before and after OCR is performed. Unlike many Thai OCR apps, ABBYY’s free trial allows users to store up to 100 pages of OCRed content within the app, while making it simple to collaborate and share PDFs to other users.

thai ocr ABBYY

Key features:

  • Annotate and edit PDF.
  • Collaborate and share PDF.
  • Change image resolution for optimal OCR results within the application.
  • Compare two versions of the same document and detecting differences.


  • Free trial includes keeping up to 100 OCRed pages saved in the software.
  • Auto detects what resolution your image could be changed to for better results.
  • Capable of doing all sorts of edits to the PDF/image before OCR conversion.


  • Registration required to access free trial.
  • Difficult to access ABBYY download link through official website.
  • May not be beginner-friendly.
  • Unable to keep the OCRed texts in the same format as the original PDF/image.
  • ABBYY struggles to detect PDFs/images that has different word sizes.
  • Requires manual clean-ups after OCR is performed on PDF/image.
  • May not detect certain Headings and outline markers when exported to PDF.

Price: US$69.3/year

Customer Rating: 4.5/5

OCR Accuracy: 97%

4. OCRSpace

OCRSpace is one of the best Thai OCR online tool available right now. Similar to I2OCR, OCRSpace offers free usage to unlimited uploads. This Thai OCR online tool also supports 30 languages including Thai Language.

OCRSpace even has its own Chrome/Firefox extension and an API guide for enthusiasts to explore and experiment with. With 5 different engines, this Thai OCR online tool consistently develops and updates its OCR capabilities by introducing new features and languages with each update.

thai ocr OCRSpace

Key features:

  • Supports JPG, PNG, GIF and PDF uploads.
  • 30 OCR languages are supported.
  • Offers detail customization for different engines and features for API testing.
  • PDF/image orientation detection and auto-rotation.


  • Free of charge. No registration needed.
  • Fast processing time.
  • Perfect playground for API and coding enthusiasts.


  • Files uploaded cannot exceed 5MB.
  • OCRed texts may not follow the same layout and format as original PDF/image.
  • No export function for other file format other than raw texts and searchable PDFs.
  • Misleading website when searching "Thai OCR", brought to a page that prompts users to download UI.Vision RPA extension, or brought to API description page.
  • Can be complicated for casual OCR users to run.
  • Not user-friendly and beginners friendly.

Price: free

Customer Rating: 3/5

OCR Accuracy: 80%

5. Convertio

Convertio works best with its file conversion capabilities. But let’s not forget about its Thai OCR online tool. It supports 10 different output format and 75 detectable languages with Thai language as one of them.

This free Thai OCR online is also relatively easy to use, with just 3 simple steps to retrieve the OCRed file. Convertio also offers the option for users to decide whether to OCR the entire document or just certain pages, which would come in handy when you want to save some time or only need a few pages from your PDF to be OCRed.

thai ocr Convertio

Key features:

  • Popular choice for converting all sorts of documents, e.g. video, audio, image, document, etc.
  • More than 10 output formats available.
  • 75 detectable languages for scanned PDF or images.
  • Convert selected pages of the document instead of converting the entire document.


  • Keeps the original layout of the texts.
  • Free OCR recognition for both registered and unregistered users.
  • Users can control how many pages and which pages to convert.
  • Relatively simple to use for casual users.
  • Option to directly save converted files to Dropbox and Google Drive.


  • Only 10 tries available then Convetio requests for registration.
  • May users struggle with converting Thai language text as the downloaded file may not have text visible.

Price: free

Customer Rating: 4/5

OCR Accuracy: 88%

Part 2. Which Tool is The Best OCR for Thai Language

Finding a great Thai OCR tool that matches your working style is the key to achieving efficiency, and an impressive app that allows all users to put out their best work is UPDF. Its visually engaging interface, functional features, formidable accuracy especially in the Thai language and incredible affordability allows a distinct upper hand amongst other alternatives:

  • Cross-platform Compatibility: Unlike other tools, UPDF offers seamless functionality across Mac and Windows.
  • High OCR Accuracy: With a 99% accuracy rate for Thai language OCR, UPDF outperforms other tools, providing reliable text recognition while preserving the original document's layout.
  • Customizable Cloud Storage: UPDF's cloud service is unique, enabling synchronization of PDF files across any device, a feature not commonly found in other OCR tools.
  • Optimal Resolution Auto-Detection: This feature sets UPDF apart by automatically determining and setting the best resolution for OCR.
  • Comprehensive Editing Control: UPDF grants users full control over editing their PDF documents, a level of flexibility not always available in other OCR tools.
  • Versatile File Conversion: Documents can be converted to any format, providing flexibility that's unmatched by most other OCR applications.
  • Multilingual Support: UPDF suppoorts 38 OCR languages. 
  • UPDF AI Assistant: A standout feature that summarizes, translates, and explains OCRed content that enhances the overall document management experience.
  • User-Friendly Interface: UPDF's interface is designed for ease of use, making it accessible to beginners and professionals alike.
  • Offline Accessibility: The OCR feature is available without internet access.

While trial users for UPDF face certain limitations, this is a small problem when compared with the advanced features that UPDF offers. And the price $25.99 annually for UPDF Pro is very cheap when considering its high customer satisfaction rating and powerful PDF features. You can download UPDF to test firstly and purchase UPDF Pro if you like it.

Final Words

We hope this guide has served as a helpful recommendation for the best Thai OCR tools. If you still have not made a decision yet, you must give UPDF a try, it isn't just another tool; it's a productivity partner praised by those who value accuracy, inexpensiveness and speed. Download UPDF on both MacOs and Windows device and experience true power.

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