Claude Code's Read Tool Silently Downscales Images, Causing Hallucinations
A Reddit user reports that Claude Code's read tool silently downscales images before passing them to the model. When the user sent 4.7 retina screenshots to Claude Opus 4.7 via Claude Code and asked it to extract text from them, the model returned a vague summary saying it "couldn't fully read every value." The text was clearly readable on the user's monitor at full resolution.
Upon investigation, the user discovered that the read tool downscales images before the model processes them. The model sees a degraded copy, not the original screenshot. The tool returns results that are indistinguishable from reading a text file — no warning is given that the image has been resampled. This means developers relying on Claude Code to extract UI text, error messages, or other on-screen content from screenshots may be getting confident but inaccurate answers based on blurry inputs.
The user expressed concern that many previous screenshot-based interactions may have produced hallucinations as a result. The post has generated significant discussion in the r/ClaudeAI community.
📖 Read the full source: r/ClaudeAI
👀 See Also
Marmy: A Self-Hosted Mobile App for Managing Multiple AI Coding Agent Sessions
Marmy is an open-source, self-hosted tool built with Claude Code that lets you manage multiple AI coding agent sessions from your phone. It features a Rust agent for your machines, an iOS app, file browsing with syntax highlighting, push notifications, and a manager-agent architecture.
Scalpel v2.0: Codebase Scanner and AI Agent Orchestrator
Scalpel v2.0 is an open-source tool that scans codebases across 12 dimensions and assembles custom AI agent teams. It includes a pure bash scanner that runs without AI tokens and works with Claude Code, Codex, Gemini, Cursor, Windsurf, Aider, and OpenCode.
Orc: Open Source Multi-Project Orchestrator for AI Coding Agents
Orc is an OS-level orchestrator that coordinates AI coding agents across multiple projects using bash, tmux, and git worktrees. It addresses merge conflicts, duplicated work, and coordination overhead with a two-tier review system and zero token burn on orchestration.
Slides-grab: Visual Editor for Fixing HTML Slides Generated by Claude Code
Slides-grab is a tool that lets you drag elements on HTML/CSS slides generated by Claude Code, then sends XPath and a highlighted screenshot to the AI agent for precise editing. It addresses the pain point of fixing small layout issues through text prompts alone.