Small tools浩
Quiet, practical utilities that run entirely in your browser. No uploads, no accounts, no tracking.
Things I needed myself, kept here in case you do too.
01
ICS formatter validate & fix calendar files
Paste a broken .ics file. Get back a clean one. Fixes line endings, line folding, missing UID and DTSTAMP, mismatched BEGIN/END blocks, and the small RFC 5545 details that quietly break imports.
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VCF splitter one vCard per contact
Split a single .vcf file containing many contacts into individual vCard files. Search, select, and download — useful for moving contacts between iPhone, Android, and Google.
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Safe paste redact before you paste into AI
Hide emails, phone numbers, card numbers, bank details, API keys, and your own names before you paste text into ChatGPT or Claude. Paste the answer back and the real values return. Nothing is uploaded.
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