RedLinz

RedLinz is a browser-based visual markup tool designed to solve the frustrating problem of human-to-AI communication. Instead of writing lengthy descriptions of UI changes or handing an AI a raw screenshot and hoping it interprets your intentions correctly, RedLinz lets you mark up images directly with professional annotation tools. Circle the element you want changed, draw an arrow to show where something should move, or use a callout bubble to add a specific note. Each of the twelve standardized markup symbols carries semantic meaning that AI assistants can parse and act on, turning your visual feedback into a structured prompt with exact coordinates and labels. This product is built for developers using Cursor or Claude Code, designers collaborating with ChatGPT or Perplexity, founders shipping product updates, and marketers refining creative assets. The key value proposition is clarity: instead of typing "no, the OTHER red box," you simply circle the correct element and export a prompt that leaves no room for misinterpretation. RedLinz works with any AI tool that reads text and images, and all annotation happens entirely client-side, meaning your images never leave your browser. With a free forever tier offering five markups per month and no credit card required, RedLinz makes precise AI communication accessible to everyone.