Challenge a charge.
Share the charge. Leave out your account number.
ON YOUR SIDE.
Too much
information.
Give AI what it needs.
And no more.
Useful AI help shouldn’t need your whole life. Prepare your text locally, then choose what to share.
✦ Free to use◎ No account⌁ Local checks
LESS SHARED. STILL USEFUL.
Your original Stays here
Help me challenge a £45 charge.
I’m Maya Chen.
My email is maya@example.com.
/Choose what to leave out
Ready for your AI You review
Help me challenge a £45 charge.
I’m [PERSON].
My email is [EMAIL].
✓ The useful context stays.
Illustration · names are details you choose to replace.
THREE STEPS. YOUR CALL.
Same AI. Less oversharing.
01 PREPARE LOCALLY
Your original
Maya’s £45 bill
/
Prepare & review
[PERSON]’s £45 bill
02 USE YOUR AI
Get help
Copy only the reviewed text.
03 BRING IT BACK
Restore locally
Bring the answer back.
Put your details back in.
Illustration · you copy between PRE/LLM and your AI. Nothing is sent automatically.
MADE FOR REAL LIFE.
Everyday tasks. A little less exposure.
Improve a proposal.
Share the scope. Replace client identities.
Find the right words.
Share the situation. Leave out names.
YOUR DATA. YOUR SAY.
Your details stay close.
Local checks. No text uploads to our servers or cloud AI. Review the result before sharing it yourself.
You review. You choose what to share.
Try a fictional example ↗What works today—and what doesn’t?
Today: local pattern checks, not an AI model. Pasted text, basic email/phone detection, exact details you specify and local restoration. Names aren’t detected automatically. Local TXT, DOCX body text and text-based PDF extraction is available. Scans and voice aren’t supported.
The / on this website is a demonstration, not active protection. The browser extension remains experimental. PRE/LLM does not currently control access or actions across your AI apps.
Masking isn’t guaranteed anonymity. Context, browser extensions, keyboards, clipboard history and device security can affect privacy. Temporary mappings expire after 15 minutes or disappear when you close or refresh the tool.