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Highlight any sentence and explain it in your own language — 13 languages. Free with Groq, no credit card. 🔍 ExplainIt! - Plain-English explanations of anything on the web Highlight any sentence on a webpage, click once, and get a clear explanation right where you're reading - in English, Russian, Spanish, Chinese, Arabic, or 8 more languages. Built for non-native English readers, students, and anyone consuming dense content (legal contracts, academic papers, news analysis, Stack Overflow, Reddit threads) without enough background to follow it word-for-word. Free to use with Groq - no credit card, no signup beyond a single API key. --- ✨ WHAT'S NEW IN 2.1 • Output in 13 languages: English, Russian, Spanish, Chinese (Simplified), Hindi, Arabic, Portuguese, German, French, Japanese, Korean, Turkish, Vietnamese • Right-to-left rendering for Arabic • Free Groq tier as the default provider - no credit card required • Branched first-run flow with a "Get free key" CTA, so you can be explaining text in 30 seconds • Typed error messages — no more truncated technical errors mislabeled as "Invalid key" • Friendlier install permissions — provider hosts are requested only when you pick a provider, not at install time 🚀 HOW IT WORKS 1) Select text on any webpage (3-2000 characters) 2) Click the floating ExplainIt bubble that appears next to your selection 3) Read the explanation in a popup right there in context 4) Copy with one click if needed - or switch tone / language and try again 🎯 THREE EXPLANATION DEPTHS • Simple Words - clear plain English (or your chosen language) for any adult • Like I'm 5 - short sentences, no jargon, friendly comparisons • Expert - preserves technical terms and key nuance 🌍 LANGUAGES (13 supported) English · Русский · Español · 中文 (简体) · हिन्दी · العربية · Português · Deutsch · Français · 日本語 · 한국어 · Türkçe · Tiếng Việt Right-to-left scripts (Arabic) render correctly out of the box. 🤖 BRING-YOUR-OWN-PROVIDER • Groq (Llama 3.3 70B) - Recommended · free tier · no credit card • Google Gemini Flash - pay-as-you-go, roughly $0.0001 per explanation • OpenAI GPT-4o mini - pay-as-you-go, roughly $0.0002 per explanation • Anthropic Claude Haiku - pay-as-you-go, roughly $0.0003 per explanation Pick one provider. Switch any time. Pay only for what you actually use - typically cents per month for personal reading. 🔒 PRIVACY • Your API key is stored locally on this device only - never synced to Google, never sent to any ExplainIt server • Only text you explicitly select is processed • Selected text is sent only to the AI provider you chose • No browsing history collection • No analytics, no telemetry, no signup, no email, no account • ExplainIt does not run its own backend - there is no ExplainIt server in the loop between you and your chosen provider 🎓 GREAT FOR • Non-native English readers consuming English content • Students working through dense academic papers and textbooks • Professionals reading contracts, medical reports, or technical docs outside their field • Anyone who wants to understand a difficult sentence without losing their place on the page --- Highlight. Click. Understand.