Clean, inspect, and neutralize hidden paste artifacts — locally in your browser.
AcePaste strips invisible Unicode, prompt-injection tags, AI debris, markdown, and HTML before that text ever reaches your editor, prompt window, or codebase. Cleaning runs entirely on your device.
The text you paste is hiding things. Every chunk of copied text — especially text generated by AI — can carry invisible Unicode characters: zero-width spaces, bidi overrides, variation selectors, and "tag" characters that are now actively used to smuggle hidden prompt-injection payloads into AI conversations. They render as nothing. They aren't there to your eyes. They're there to your tools.
Ace Paste Cleaner Pro strips them all — across every script and language, on the client, instantly, with zero data leaving your device. Then it cleans up everything else: markdown, AI markup, smart quotes, em dashes, extra whitespace, broken formatting from PDFs and websites, dates, numerals, symbol-word pairs, and up to 25 custom find/replace pairs in one pass. Built for developers staging code snippets, writers prepping drafts, students organizing notes, and anyone who pastes AI output and wants to be sure nothing is riding along that shouldn't be.
See what AcePaste removes
Real example: text copied out of an AI chat. The red highlights are invisible characters and markup your eyes don't see — but other systems do.
↑ Removed: zero-width joiners, U+E0000 tag-character payload, smart quotes, em dash, ellipsis, NBSP, HTML comment, markdown headings/bold, emoji.
🔒 Your pasted text never leaves your browser
Cleaning runs entirely on your device — no upload, no server-side processing, no logging of what you paste. The text in the box stays in the box.
For Pro features, the app makes account sign-in and subscription-status requests so the same login works on the web app and the extension. Those requests carry your account credentials only — never your pasted text.
🧩 Get protection everywhere with the browser extension
Bring AcePaste to every paste box on the web. One subscription covers the web app and the extension — same login, same account.
- Auto-clean on copy and paste — every site, every input
- Page scanner: spot hostile invisible characters before you copy
- On-page warnings when a page contains tag-character payloads
- Custom rules & full pipeline applied to clipboard activity
Uses
Everyday text-sharing
People often need to move chunks of text between devices, browsers, or platforms without formatting glitches. AcePaste provides a quick drop-zone for clean copy-paste workflows.
Developer code snippets
Coders regularly share small fragments of code for debugging, collaboration, or documentation. AcePaste helps them paste, inspect, or convert snippets without hidden characters or formatting surprises.
AI prompt staging
Users preparing prompts for large language models often want a temporary editing space to adjust structure, sanitize text, or remove unintended whitespace before submitting it to the AI.
Writers and editors prepping drafts
Authors and editors often copy text between writing apps, CMS platforms, or email clients. AcePaste gives them a neutral surface to clean up text formatting or isolate sections for revision.
Removing weird formatting from copied text
When grabbing text from PDFs, websites, or apps, pasted output can contain invisible styling or broken spacing. AcePaste acts as a formatting scrubber to normalize the text.
Temporary notes and scratchpad usage
Sometimes a user just needs a momentary scratch space—planning a message, reorganizing a paragraph, or staging a list—without logging into apps or saving files.
Sharing text securely without accounts
Users who want fast, transient text sharing can use AcePaste as a "no friction" tool without logging in, creating accounts, or exposing private data in permanent storage.
Clipboard troubleshooting
People diagnosing clipboard issues (double pasting, style retention, encoding quirks) use AcePaste as a neutral test bed to verify what their system is actually copying.
Text comparison and cleaning workflows
AcePaste can be used alongside diff tools or editors to clean, isolate, and compare text, especially when removing non-ASCII characters or line-ending inconsistencies.
Students, researchers, and analysts organizing quotes
Users working with research papers, transcripts, or source excerpts often paste text into a clean intermediate zone (AcePaste) to format it before transferring to their final document.
