Pretty Prompt is a slick Chrome extension in 2026 acting as "Grammarly for prompting"—one-click refines your rough ideas into clear, structured, high-quality prompts for ChatGPT, Claude, Gemini, and more. It adds context, removes ambiguity, breaks into editable blocks (Prompt Blocks), saves history across tools, supports custom tones/styles, and includes a growing prompt library. No extra logins needed, works right in the textbox—saves time, reduces revisions, and boosts AI output quality for writers, marketers, devs, students, and everyday users. Free tier with limits; Pro unlocks unlimited.