Japanese → Chinese document translation
Japanese to Chinese document translator for Word, Excel, PowerPoint and PDF
Use this workflow when a Japanese business document, spreadsheet, slide deck or text-based PDF needs a Chinese version without copying its contents into a public translation box. Veil Translate extracts text in your browser, lets you review the values that should be masked, and writes the translated text back into the file.
Japanese-source automatic sensitive-data detection is limited: the built-in model is tuned mainly for Chinese and English. Before translating, manually add names, account numbers, contact details or other values that must be masked, then confirm the review list. Undetected sensitive data can remain in the outbound body text.
Managed translation relays masked body text through Veil Translate to Cloudflare Workers AI. Undetected sensitive data and the remaining body text may still be processed there. Read Cloudflare's privacy policy.
Short answer
Use this Japanese to Chinese document translator to upload a Word, Excel, PowerPoint or text-based PDF file, choose Simplified or Traditional Chinese, review and manually supplement sensitive values, then translate the masked text. The file is parsed and rebuilt locally; the translation request contains de-identified text, not the original document file.
A practical Japanese-to-Chinese workflow
First, choose Japanese as the source language and Chinese as the target language, then upload the document. The review screen groups suggested entities and lets you add missing values, edit false positives, or remove items that do not need masking. This manual step matters for Japanese text because automatic detection coverage is limited.
Next, confirm the placeholders and start translation. Stable placeholders protect the values you selected while the surrounding text is translated. Before the file is rebuilt, the app verifies that every placeholder returned by the provider is still present, then restores the original values on your device.
Choose Simplified or Traditional Chinese for the intended readers. Add company names, product names, legal terms and other fixed translations to the local glossary so Japanese proper nouns, honorifics and repeated business terminology stay consistent across the document.
Supported files and layout expectations
DOCX, XLSX and PPTX are supported. Word main-body paragraphs and tables, Excel cell text, and PowerPoint slide text and speaker notes are translated while their underlying document structures stay in place. Word headers and footers remain in the file, but their text is not translated. XLSX formulas and number formats are not translated.
Text-based PDFs are also supported. The Japanese source text is removed and the Chinese translation is placed back at the original position, so layout is closely preserved rather than guaranteed identical. Scanned, encrypted, rotated and vertical-text PDFs are not supported.
What leaves the browser — and what does not
Parsing, review, masking, placeholder restoration and file rebuilding run in your browser. Confirmed sensitive values are replaced with placeholders such as ⟦NAME_1⟧ before the request; the original file, filename and mapping table do not leave your browser.
BYOK sends masked body text and your key directly to your chosen provider. Managed mode relays masked body text, without a user key, through Veil Translate to Cloudflare Workers AI. Undetected sensitive data and the remaining body text may still leave as plaintext, so this is not encrypted translation.
Frequently asked questions
Can I translate Japanese into Simplified or Traditional Chinese?
Yes. Choose Japanese as the source and either Simplified Chinese or Traditional Chinese as the target language before uploading the file.
Will Japanese names and personal data be detected automatically?
Detection for Japanese source text is limited because the built-in model is tuned mainly for Chinese and English. Review the suggestions and manually add every value that must be masked before you translate.
Can I translate a Japanese PDF to Chinese?
Yes, when it is a text-based PDF. Source text is removed and translated text is placed at the original position with layout closely preserved. Scanned, encrypted, rotated and vertical-text PDFs are not supported.
Is my Japanese document uploaded to Veil Translate?
The original document stays in your browser. BYOK sends masked body text and your key directly to your provider; managed mode relays masked body text through Veil Translate to Cloudflare Workers AI. Undetected sensitive data may remain in that text.