PDF Translation 2026: Methods and Recommended Tool Comparison

When you need to translate a PDF, do you find yourself wondering which tool to use, worrying that the layout will break, or concerned about security?

• Retyping the text is time-consuming.
• Copying and pasting doesn’t work well when there’s a large amount of text.
• The PDF layout breaks after translation.
• Large PDF files cannot be translated.
• You are unsure whether it is safe to upload confidential documents to a free tool.

This article compares free and paid PDF translation tools and methods, and explains what to consider when using them for business.

Compare recommended PDF translation tools with free options

First, here is a comparison of some commonly used PDF translation tools. Choose the tool that fits your purpose and situation.

Tool	Free option	File limit	Security	Translation quality	Suitable for
Google Translate	◎ Free	10 MB / 300 pages	△ (content may be reused)	◯	Understanding content / personal use
Yaraku Translate	○ Free for 14 days	150 MB	◎ (no secondary use)	◎	Business / confidential documents

Google Translate for PDFs: steps and key considerations

Google Translate lets you translate PDFs for free without logging in. However, there are important considerations for business use.

File size and page limits

Google Translate limits both the file size and number of pages for PDF translation.

• Google Translate: PDF files are limited to 10 MB and 300 pages per translation [1].

Split any PDF larger than 10 MB or longer than 300 pages before translating it.

Reference: Translate documents: Google Translate

Security risks

Before uploading confidential documents to Google Translate, review its Terms of Service. Google’s Terms of Service state the following [2]:

When you upload, submit, store, send or receive content to or through our Services, you give Google (and those we work with) a worldwide licence to use, host, store, reproduce, modify, create derivative works (such as those resulting from translations, adaptations or other changes that we make so that your content works better with our Services), communicate, publish, publicly perform, publicly display and distribute such content. (Reference: Your content in our services | Google Terms of Service)

These terms grant Google certain rights to use uploaded content. However, they do not explicitly state that content will not be reused or that confidential data will not be used. Before uploading highly confidential documents, review your organization’s security policy and the applicable terms of service.

Translating PDF files with Google Translate

Google Translate can translate not only text but also entire files. Supported file types include PDF.

Supported file formats:

• doc / docx
  
• pdf
  
• ppt / pptx
  
• xls / xlsx
  

It supports more than 249 languages, with a maximum file size of 10 MB.

Steps for translating a PDF with Google Translate

1. On a computer, go to Google Translate (https://translate.google.com/).
2. Click “Documents” in the upper-left corner of the screen.
3. Click “Browse your files,” then select the PDF you want to translate.
4. Select the target language in the upper-right corner of the screen.
5. After the upload is complete, click “Translate” to start machine translation.
6. Click “Download translation” to finish.

When to use Google Translate

Google Translate is suitable for getting a general understanding of content, personal use, and documents that do not contain confidential information. Before using it for business documents that contain confidential information, review your organization’s security policy and the applicable terms of service.

Caution: four reasons why PDF translation may not work well

Even widely used tools such as Google Translate may not translate PDFs successfully. The following are four common reasons.

1. Layout and table distortion

If a PDFfile  contains images and captions, the text and images may overlap, causing layout issues. Images may be omitted entirely, or tables may be distorted. Manuals with a mix of images, tables, and text often tend to  lose their style during translation.

2. Unintended line breaks can make translations incoherent

PDF files may contain invisible line break characters at the end of lines. As a result, sentences and clauses may be split in unintended places, producing unnatural, less accurate translations.

3. Large files are difficult to translate at once

High-quality, uncompressed images or Illustrator-created files can lead to large PDF sizes. Long documents also tend to have a large number of pages.
If the machine translation tool has upload limits, it might be necessary to compress or split the PDF files, which is an extra work.

The PDF file is protected

Some PDF files have security settings that restrict editing. If text and tables cannot be selected or copied, a machine translation tool may recognize the PDF as an image and exclude it from translation.

Yaraku Translate for business PDF translation

Yaraku Translate can translate entire files and supports PDF, Word, Excel, PowerPoint, and other formats. The Company plan provides security measures for businesses, including not using translated documents for secondary purposes.

Supported file formats:

• Word
• Excel
• PowerPoint
• PDF
• CSV
• HTML (HTM)
• TXT
• XML

Yaraku Translate can translate files in these and many other formats.

Yaraku Translate supports ChatGPT, Claude, Gemini, Google Translate, Microsoft Translator, Papago, and the Yaraku engine. You can select an engine based on the type of document and compare translation results from multiple engines.

Yaraku Translate supports 36 languages. With the Company plan, there is no monthly character limit as long as each translation is within 150,000 characters when using GPT-5.4 mini. The maximum file size is 150 MB.

Key features of Yaraku Translate

The following features are available with Yaraku Translate’s Company plan:

• Unlimited number of uses
• Up to 150,000 characters per translation (with GPT-5.4 mini)
• Maximum file size: 150 MB
• Security measures for businesses (translated documents are not used for secondary purposes)
• Unlimited use of multiple translation engines (GPT-4.1, GPT-4,1 mini, Gemini, Claude, Google, Microsoft, Papago, Yaraku Translate, paid option engine: Minna no Jidou Honyaku@KI)
  

Note: Yaraku Translate is available immediately after registration. No credit card is required, and no automatic charge is made after the trial ends.

Points to note when translating PDFs with Yaraku Translate

Yaraku Translate offers a Personal plan for individuals (Free or Premium) and a Company plan for businesses.
Do not use the Free Personal plan to translate documents that contain confidential information. For confidential information, use the Premium Personal plan or the Company plan, which includes a 14-day free trial.

How to translate PDFs on a smartphone (iPhone/Android)

You can translate PDFs on a smartphone without a dedicated app by using the following methods:

• Google Translate app (camera feature): Convert the PDF to images and translate them with the Google Translate app’s camera feature. Because you need to process each page separately, this method is best for PDFs with only a few pages.
• Use Yaraku Translate in a browser: Access Yaraku Translate in your smartphone’s browser, then upload and translate the PDF.
• Use the web version of Google Translate in a browser: Access Google Translate in your smartphone’s browser, then upload and translate the PDF.

Summary: choosing a PDF translation tool

Choose a PDF translation tool based on its intended use and the document’s confidentiality.

• Understanding content / personal use: Google Translate (free, no login required)
• Business use / confidential documents / large files: Yaraku Translate (supports up to 150 MB, no secondary use, OCR support)

When handling confidential business documents, choose a paid plan with security measures for businesses. Yaraku Translate’s Company plan offers a 14-day free trial with no credit card required.

Reference

[1] Google LLC (2025). “Translate documents | Google Translate.” Accessed 2025/08/09. https://support.google.com/translate/answer/2534559?ref_topic=7011659&hl=ja
[2] Google LLC (2025). “Google Terms of Service.” Accessed 2025/08/09. https://policies.google.com/terms
[3] PR TIMES (2025). “Tohoku University, a candidate for designation as a University for International Research Excellence, adopts the YarakuZen AI translation platform.” Accessed 2025/08/09. https://prtimes.jp/main/html/rd/p/000000049.000004034.html