Kintoun.ai: Seamless, Secure Document Translation with Zero Format Loss

Kintoun.ai is an AI-powered document translation tool designed for individuals and teams who need accurate, layout-preserving translations across multiple file formats. Built by Ding Yu, a product manager and software engineer based in Tokyo, Kintoun.ai leverages advanced AI models (such as OpenAI and Google) to deliver fast, reliable translations while prioritizing user privacy and data security. The platform supports a wide range of languages including English, French, German, Japanese, Chinese (Simplified and Traditional), Korean, Russian, Spanish, Italian, Indonesian, Thai, and more, making it ideal for global communication. Whether you're translating Word documents, presentations, spreadsheets, or subtitles, Kintoun.ai ensures professional results with minimal effort.

Key Features:

• Layout-Preserving Translation: Maintains original formatting across docx, pptx, xlsx, md, markdown, srt, and txt files.
• Support for 12 Languages: Offers translation between English, French, German, Indonesian, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish, Thai, and Traditional Chinese.
• Pay-As-You-Go Plan: No signup required; users pay only for what they use at $3.99 per 20,000 characters with advanced AI and no data retention.
• Free Plan Available: Includes a 5,000-character limit with basic translation and allows files to be used for AI training.
• Automatic File Deletion: Uploaded files and instructions are automatically deleted within 24 hours post-translation.
• Manual Deletion Option: Users can delete files and translation instructions at any time.
• Privacy-First Design: Personal content is not retained; only non-personal metadata (timestamps, language pairs, word count) is stored for performance improvement.
• No Data Training on Paid Plans: Ensures third-party AI providers do not log or train on user data for Pro and Custom plans.
• Team Collaboration & Priority Support: Available on monthly and custom paid plans for enhanced workflow efficiency.
• Instant Access & Processing: Service is available immediately after order placement with real-time translation.
• User Data Control: Pro and Custom plan users can request access to or deletion of their personal data.
• Secure Payment Processing: Uses Stripe for secure credit card transactions with no refund policy except in rare cases of permanent service closure.

Pricing: Kintoun.ai offers a Free plan with a 5,000-character limit and a $3.99/20,000 characters pay-as-you-go option. Monthly and custom plans are available for teams and advanced users, with full ownership of content and enhanced privacy guarantees. The pay-as-you-go model allows users to translate without registration, while paid plans include additional features like priority support and collaboration tools.

Conclusion: Kintoun.ai stands out as a fast, secure, and user-friendly document translation solution that combines high-quality AI with strong privacy safeguards—perfect for professionals, students, and teams needing accurate multilingual content without compromising on security or formatting.