# AcePaste Cleaner Pro > AcePaste is a privacy-first, in-browser tool for removing invisible Unicode characters, AI debris, prompt-injection tags, markdown, and HTML from pasted text. All processing happens locally in the browser — pasted text never leaves the device. AcePaste cleans text for everyday sharing, developer code snippets, AI prompt staging, and editorial work. The site also publishes security research on invisible Unicode as an attack surface. ## Core Content - [AcePaste Cleaner (home)](https://acepaste.xyz/): The cleaner tool — paste text to strip invisible Unicode, AI markup, formatting, emojis, numerals, dates, and symbols, with a live report of what was removed and custom find/replace. - [FAQ](https://acepaste.xyz/faq.html): Common questions on invisible characters, what gets cleaned, privacy, and usage scenarios. - [Pricing](https://acepaste.xyz/pricing.html): AcePaste is free — the full cleaner and the Chrome extension cost nothing, with no account or character limits. A developer API and Teams product are in development. ## Blog — invisible-character security research - [AcePaste Blog](https://acepaste.xyz/blog/): Writing on text safety, invisible characters, and prompt injection from the AcePaste team. - [Plane 14 Was Supposed to Tag Languages. It Smuggles Instructions Instead.](https://acepaste.xyz/blog/plane-14-tag-character-prompt-injection.html): How Unicode's deprecated Plane 14 tag characters remain a reliable invisible instruction-smuggling channel in prompt injection. - [The Invisible Text You're Pasting Into Your LLM](https://acepaste.xyz/blog/invisible-text-llm.html): How invisible Unicode survives copy-paste into LLMs and RAG pipelines — zero-width separators, tag characters, and the broader attack class. ## Resources - [Chrome Extension](https://chromewebstore.google.com/detail/kgnnilelmfchdblcoefmokgcbpccbcci): Browser extension for ongoing, in-place text cleaning while browsing. - [About](https://acepaste.xyz/about.html): What AcePaste is and the team behind it. ## Optional - [Privacy Policy](https://acepaste.xyz/privacy.html): Local-processing, privacy-first data practices. Regional versions: [EU](https://acepaste.xyz/privacy-eu.html), [California](https://acepaste.xyz/privacy-ca.html). - [Security & Terms of Service](https://acepaste.xyz/security.html): Security posture and terms of service. - [Cookie Policy](https://acepaste.xyz/cookie-policy.html): How the site uses cookies.