Build UTM-tagged URLs for campaign tracking by filling in the source, medium, campaign, term, and content parameters. The tool assembles the full tagged URL in real time and validates that required fields are present. Copy the result and paste it into your ad platform, email tool, or social post — Google Analytics and GA4 will automatically attribute traffic to the correct campaign.
Verify a file's integrity by checking its hash against an expected checksum. Supports SHA-256, SHA-1, MD5, and more. Runs in your browser — nothing uploaded. Free.
Paste a JSON Web Token to decode and inspect its header, payload, and expiry — entirely in your browser.
Test regular expressions against a string with live match highlighting, flag toggles, and a match details table.