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Translate your PDF.
Keep its layout.

Translate research papers, reports, and manuals while keeping the document readable. Download a translated PDF or a bilingual copy for careful review.

Formula-aware Bilingual output Browser based

Choose a language pair

Start with your PDF’s language.

Open a translator with the languages selected. See a real PDF example before you upload.

English to Chinese

Papers and reports, with Chinese text and the original for comparison.

Japanese to English

Japanese manuals and scans, made readable in English.

English to Japanese

English research and technical documents, with Japanese text.

English to Spanish

Reports and study notes, with Spanish line wrapping you can inspect.

See the result

A translation you can still read like a document.

Explore an illustrative page layout before uploading your own PDF.

ORIGINAL · ENGLISH

Context-aware document translation

A. Rivera · M. Chen · S. Patel

Abstract

Document translation requires more than replacing isolated sentences. Page structure, reading order, and mathematical notation carry meaning across the document.

Our method separates linguistic content from layout metadata before rebuilding the translated page.

2. Method

For each text block b, the translation function preserves the relationship between position and reading order:

T(b_i) → b′_i, L(b′_i) ≈ L(b_i)

Figure 2. Layout retention by document type.

TRANSLATION · SIMPLIFIED CHINESE

上下文感知的文档翻译

A. Rivera · M. Chen · S. Patel

摘要

文档翻译并不只是替换孤立的句子。页面结构、阅读顺序和数学符号共同承载着文档的含义。

我们的方法先将语言内容与版面元数据分离，再重新构建翻译后的页面。

2. 方法

对于每个文本块 b，翻译函数会保留位置与阅读顺序之间的关系：

T(b_i) → b′_i, L(b′_i) ≈ L(b_i)

图 2. 不同文档类型的版面保留情况。

Simple workflow

From PDF to readable translation in three steps.

01
Upload your PDF
Choose a research paper, report, manual, or scanned PDF from your device. Scanned pages are processed with OCR automatically.
02
Choose the language
Select the target language and whether you want a translated copy or both output formats.
03
Review and download
Follow page-level progress and download the translated PDF when it is ready.

Made for structured documents

Keep the parts that make a PDF useful.

General text translators often remove the document around the words. PdfTranslatorAI is designed for PDFs where columns, figures, formulas, captions, and references help the reader understand the content.

Translate your document

∫ f(x) dx

Formula-aware layout

Equations and inline symbols stay recognizable while the surrounding explanation is translated.

Structured pages

Headings, columns, tables, figures, and citations remain connected to the page they belong to.

EN中文

Two useful outputs

Read a clean translated PDF, then use the bilingual version when terminology needs a closer check.

Visible task progress

Long documents run as background tasks, with page-level progress and clear success or error states.

Choose the right document

Built for papers, reports, and manuals.

PdfTranslatorAI works best with digitally generated PDFs that contain selectable text. Academic papers, theses, technical reports, product documentation, and business documents are strong candidates because their layout contributes directly to meaning.

Translation changes the length of sentences, so no system can promise pixel-for-pixel results for every file. The goal is a readable page that keeps the relationship between text, equations, images, tables, and references. Use the bilingual output when you need to verify specialist terminology against the source.

Research papersTwo-column articles, citations, figures, and equations
Technical reportsStructured sections, diagrams, tables, and notes
Product manualsInstructions, labels, part numbers, and warnings
Business documentsProposals, white papers, and internal reports

Questions, answered

What to know before translating a PDF.

Will my PDF keep its original layout?+

The translator is designed to retain page structure, formulas, tables, images, and reading order where possible. Because translated text can be longer or shorter than the source, some line breaks and spacing may change.

Can I translate scanned PDFs?+

Yes. OCR is applied to scanned pages automatically, so you do not need to run it first. Clear, straight, high-resolution scans work best; faint text, skewed pages, and handwriting may reduce recognition accuracy. Check the translated PDF against the original, especially for important details.

Which languages are supported?+

Choose from English, Simplified and Traditional Chinese, Japanese, Korean, French, German, Spanish, Italian, Portuguese, and Russian. Results may vary by language pair and document.

What are the file size and page limits?+

Each PDF can be up to 50 MB and 100 pages. Guests can translate 1 page per 24 hours, free accounts 3 pages per 24 hours, and paid plans offer larger monthly allowances. The entire PDF must fit your remaining page allowance.

How long does PDF translation take?+

Processing time depends on page count, layout complexity, and the translation provider. The task page will show completed pages instead of an unreliable time estimate.

What happens to my files after translation?+

Download access is time-limited, generally to 24 hours after a translation is ready. Document processing and data retention are explained in our Privacy policy.

Start with one document

Read the PDF in your language.

Choose a PDF

Translate your PDF.Keep its layout.