Base64, Base64URL, URL and HTML entity encoding both ways, plus SHA hashes — with the round trip checked.
Generate strong passwords in your browser, with the real entropy shown. Nothing is sent anywhere and nothing is logged.
Make a QR code for a link, Wi-Fi network, contact card, email or plain text — as a PNG or a vector SVG.
Generate a Code 128, EAN-13, UPC-A or Code 39 barcode as a PNG or SVG, with the check digit added and the input validated for you.
A plain-text notepad that stays in your browser — word and character counts, copy or download as .txt, and it survives a reload.