TopCopilot - 2026 Pricing, Features, Reviews & Alternatives

TopCopilot is an AI-powered translation add-in for Microsoft Office (Word, Excel, PowerPoint) and WPS on Windows, designed for individuals, professionals, and teams handling multilingual documents. A single Windows installer covers all supported applications, and translations are written back in place, paragraph by paragraph or cell by cell, while preserving formatting elements such as bold text, numbered lists, tables, merged cells, column widths, and number formats. Glossaries enforce consistent terminology across a document. The product also ships as a browser extension for Chrome and Edge, and as no-install web tools accessible in any browser, supporting document, spreadsheet, image, and PDF translation across 14+ target languages. Translation and AI requests are routed through third-party large language models via the product's own service layer; the server does not persistently store translated content. Cloud infrastructure runs on Tencent Cloud and an internet connection is required.

TopCopilot addresses four primary use-case segments: international trade (contracts, quotations, product specifications), cross-border e-commerce (multilingual product listings), professionals working or studying abroad, and academic researchers handling papers and abstracts. The Word add-in supports full-document, selection, and selected-text translation, plus image and chart translation, AI chat, and AI form-fill in the sidebar. The Excel add-in handles whole-sheet and selection translation, automatically skips formula columns, preserves number formats, and includes natural-language formula generation, image-to-table recognition, and PDF-to-Excel extraction written directly into the workbook. The PowerPoint add-in covers full-presentation, active-slide, or selection translation, including chart titles, SmartArt, and presenter notes, with a configurable translation font. WPS Writer and WPS Spreadsheets receive equivalent capabilities through the WPS add-in.

The browser extension delivers bilingual web-page translation with four switchable engines (Bing, Google Translate, browser built-in AI, and LLM), selection translation, and English grammar analysis. No-install web tools extend coverage to Word document translation, Excel spreadsheet translation, image translation, image-to-Word, image-to-Excel, PDF-to-Excel, and PDF translation without requiring any software installation. A free tier is included; Pro plans are priced transparently with no hidden fees and are cancellable at any time. Credits are consumed only for actual processing volume, and custom prompts are configurable per plan tier to influence translation output.