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OmniDoc: The free AI office suite for documents, spreadsheets, slides and translation

Four offline editors for documents, spreadsheets, slides and images. Translate PDF, Word, PPT and 11 more formats with the layout preserved. Publish any document as a web page in one click. Desktop, web and API share one account.

Use for Free Download desktop app
38 languages 14 file formats Offline editing / Publishing / API Windows · Ubuntu · Web

The OmniDoc family

More than translation — a complete AI document workspace

The desktop app ships with four local editors, so you open, edit and save on your own computer. Sign in with one OmniDoc account for cloud documents, AI, translation, mail and web publishing.

Works offlineUniDocDocumentsWrite and lay out documents, import and export DOCX, Markdown and HTML, and save as native UDOC.Open Works offlineUniCellSpreadsheetsEnter data and formulas, then calculate, filter and organize. Works with XLSX and CSV.Open Works offlineUniPPTPresentationsImport PPTX, edit text, shapes and equations, and present right in the browser.Open Works offlineUniPicImagesCrop, adjust colors and annotate, and add text and shapes. PNG, JPG, WEBP and SVG.Open Online serviceOmniDoc TranslateDocument translation14 formats including PDF, Word and PPT, 38 languages, original layout preserved.Open Online serviceUniMailMailSend and organize email, and open attachments in the workspace to keep editing.Open Online serviceBrowser extensionWeb page translationTranslate the current page in Edge and Chrome and read it side by side with the original.Open Online serviceOmniwing StudioWebsites & contentBuild websites with AI, edit pages visually, and manage site and blog content.Open DevelopersDeveloper APIAPI & AI toolsTranslate and process documents in bulk over a REST API. AI assistants can create, edit and publish documents through OmniDoc.Open
  1. Open and editOpen local files from the workspace, or choose “Open with OmniDoc” in your file manager.
  2. Saved on your computerDocuments, spreadsheets, slides and images stay on your device. No forced upload and no sign-in for local editing.
  3. Publish and sharePublish HTML, Markdown, PDF, Word or UDOC as a public web address, send it with UniMail, or translate it with OmniDoc.

Download OmniDoc for desktop

Full installers for Windows 10 / 11 and Ubuntu 22.04 (x64) with SHA-256 checksums. On macOS and other systems, use the web apps.

Free download Get it from Microsoft Store API docs

Translation engines you can choose

Upload a file to start translating

Drag & drop files here, or Browse files

Supports PDF, DOCX, PPTX, XLSX, CSV, EPUB, TXT, MD, HTML, SRT, ASS, JPG, PNG and UDOC

Common
Auto Detect
简体中文
English
日本語
한국어
Asia
繁體中文
粵語
ไทย
Tiếng Việt
Bahasa Melayu
Bahasa Indonesia
Filipino
ភាសាខ្មែរ
မြန်မာ
हिन्दी
বাংলা
தமிழ்
తెలుగు
मराठी
ગુજરાતી
اردو
བོད་སྐད
Монгол
Қазақша
ئۇيغۇرچە
Middle East
العربية
فارسی
עברית
Türkçe
Europe
Français
Deutsch
Español
Português
Italiano
Nederlands
Русский
Polski
Čeština
Українська
Common
简体中文
English
日本語
한국어
Asia
繁體中文
粵語
ไทย
Tiếng Việt
Bahasa Melayu
Bahasa Indonesia
Filipino
ភាសាខ្មែរ
မြန်မာ
हिन्दी
বাংলা
தமிழ்
తెలుగు
मराठी
ગુજરાતી
اردو
བོད་སྐད
Монгол
Қазақша
ئۇيغۇرچە
Middle East
العربية
فارسی
עברית
Türkçe
Europe
Français
Deutsch
Español
Português
Italiano
Nederlands
Русский
Polski
Čeština
Українська
Basic Models
OmniDoc XiRang XR-397B Privacy Safe
DeepSeek
Qwen
ChatGPT
Gemini
Claude

Supported Formats

From research papers to contracts and product documentation — translate common document formats with full layout preservation.

14 Formats Continuously Updating
Documents & Layout Data & Spreadsheets Code & Development Media & Subtitles
PDF documentStandard and scanned
Excel (XLSX)Spreadsheets
MarkdownTechnical documents
SRT / ASSVideo subtitles
Word (DOCX)Professional documents
CSV dataTabular text
JPG / PNGImage OCR
EPUB / e-booksDigital publications
PowerPointPresentations
HTMLWeb pages
TXTPlain text
UDOCUniDoc documents

Why Choose OmniDoc?

Better translations, better layout preservation, lower cost

Multi-Engine Translation

Choose an engine before you translate: XiRang XR-397B, DeepSeek, Qwen, ChatGPT, Gemini, Claude.

Multi-Format Support

PDF, Word, PPT, Excel, CSV, images, ebooks, Markdown, HTML, subtitles — 14 formats supported, upload and translate.

Smart OCR

Recognizes text in scanned documents and images. Supports extracting and translating text embedded in PDF images.

Developer API

Upload files via REST API for translation. Supports batch jobs and integrates into existing workflows.

Glossary Support

Upload a glossary to define how specific terms should be translated. Applied automatically to ensure consistent terminology.

Bilingual View

View original and translated text side by side for quick proofreading.

OmniDoc desktop: faster, more open, and free

One app opens every office file, and your documents can move.

Every Office file, rendered as HTML

Word, Excel, PowerPoint, PDF and Markdown open, edit and present in a web engine. Export lossless HTML and publish it as a link in one click.

Free to use

Downloading, installing, local editing and format conversion are free and need no account. Only cloud services such as translation use credits, based on actual usage.

Faster

Native engines run on your computer: about 9 ms from keystroke to layout, 11 s to export a large Word file, about 1 s from PDF to HTML.

Interactive documents

Put charts, animations, flowcharts and formulas right in the document. Published as a web page they stay interactive, and AI can create them in one go.

Download the desktop app free

Translation Preview

PDF Original (English)

Rooftop Solar Array — Quarterly Performance Summary

This summary covers the second quarter of operation for the 120-panel array on the roof of Building C. Output figures come from the inverter log; irradiation values come from the on-site pyranometer.

Month Irradiation (kWh/m²) Output (kWh)
April 142.6 5,590
May 168.3 6,580
June 175.9 6,710

Expected output is estimated with the standard yield formula, where A is the panel area, r the module efficiency, H the irradiation and PR the performance ratio:

E=A×r×H×PR

June output was 3% below the estimate. The inspection on 2 July found dust on the eastern row; the panels were cleaned the same day.

PDF Translated (Chinese)

屋顶光伏阵列——季度运行摘要

本摘要涵盖 C 栋屋顶 120 块组件阵列第二季度的运行情况。发电量数据来自逆变器日志，辐照量数据来自现场总辐射表。

月份 辐照量 (kWh/m²) 发电量 (kWh)
4 月 142.6 5,590
5 月 168.3 6,580
6 月 175.9 6,710

预期发电量按标准发电量公式估算，其中 A 为组件面积，r 为组件效率，H 为辐照量，PR 为系统效率：

E=A×r×H×PR

6 月发电量比估算值低 3%。7 月 2 日巡检发现东侧一排组件积灰，当天已完成清洗。

38

Translation languages

14

File formats

32

Interface languages

User Reviews

"

"The translation quality is excellent. PDF layout preservation is nearly perfect — tables and images retain their original formatting. Far better than other tools I've used."

陈
Michael C.
"

Super easy to use. Dragged a 200-page PDF and got a perfectly formatted translation in under 3 minutes. Amazing!

M
M***k
"

术语表功能对法律翻译帮助很大，专业词汇一致性终于有保障了。

王
王***律
"

"Our company frequently needs to translate foreign-language contracts and technical documents. OmniDoc's glossary feature is incredibly useful — it maintains excellent consistency for professional terminology."

J
James L.
"

The bilingual comparison feature is incredibly useful for reviewing academic papers. Layout preservation is top-notch.

A
A***n
"

"During my studies abroad, I had to read tons of English literature. OmniDoc's bilingual view is incredibly practical — reading the original alongside the translation has greatly improved my learning efficiency."

林
Sophie L.

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Purchase & usage details
Buy again anytime
Buy the same pack again anytime. Credits are added to your balance.
No expiry
These credits never expire and require no renewal. Existing orders keep their original terms.
Translation estimate
Page counts are estimates. Credits are charged for actual task usage.
How credits are charged
Before a task starts we only check that your balance meets the minimum. When it finishes, the actual usage is charged; any shortfall is recorded as a balance owed, and credits you add later settle it first.

Frequently Asked Questions