Claude Counter is a Firefox extension for monitoring Claude usage directly on claude.ai. It estimates tokens for text, images, and PDFs, shows cache timing and context limits, and displays session, weekly, and model-specific usage bars using local processing.
In the Browser DevTools & extensions space, Claude Counter takes a focused approach. It focuses on tracking Claude token usage, cache timing, and session or weekly limits while using claude.ai. It is built as a consumer product for claude users who want local usage and token monitoring. Claude Counter costs nothing to use. It runs on the web and embeddable surfaces.
Behind Claude Counter is DizzyFop, and it first shipped in 2026. Key capabilities include token estimation, image counting, and PDF counting. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
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