Preview how your page will look when shared on Facebook, LinkedIn, and Twitter/X — without deploying anything or providing a live URL. Enter your title, description, image URL, and page URL, then switch between platform mock-ups. Catch problems like a missing image, truncated title, or wrong card type early in the publishing process.
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.