WhatLetter vs Readable

WhatLetter translates documents and texts into over 30 languages using photo capture and AI technology. Users can take pictures of menus, letters, or forms and receive instant translations in their preferred language. An AI chatbot further explains translated content and answers questions to clarify complex documents.

WhatLetter stands out by combining instant photo translation with an AI assistant that helps users understand the meaning behind translations. Unlike basic translators, it prioritizes privacy by not storing images or chat histories on servers. It is accessible through desktop and mobile browsers without requiring app downloads.

The tool serves diverse users such as immigrant families, seniors, and travelers who need quick, reliable translations for personal or business purposes. While the free plan offers limited translations, the WhatLetter Plus subscription unlocks unlimited access and enhanced AI features. Upcoming integrations with WhatsApp and Telegram will enable message translation within those platforms.

Readable translates PDF files into Japanese while keeping the original layout intact, including tables, figures, and images. Built by NextLab Inc., it targets researchers reading academic papers and business teams working through manuals, reports, and contracts without rebuilding documents by hand.

The reader shows original and translated text side by side so you can scan a translation and jump back to the source line when something needs a closer look. Premium users can register custom dictionaries so product names, abbreviations, and field-specific terms translate the same way every time.

Readable runs in the browser and through a Chrome extension for quick file translation. Pro Standard focuses on English-to-Japanese PDFs, while Pro Premium adds 200+ source languages, larger file limits, and optional ChatGPT-based translation engines.