QR Code & Barcodes

Builds the WIFI:S:...;T:...;P:... payload string from network name, password, and security type for one-scan phone joining.

Generates T:nopass WIFI: strings for guest hotspots that require no password.

Adds the H:true flag to WIFI: strings for networks that hide their SSID broadcast.

Builds WIFI: strings with T:SAE for WPA3 networks including WPA2 transition fallback notes.

Composes WPA2-EAP WIFI: strings with EAP method and anonymous identity fields for office networks.

Escapes semicolons, commas, colons, quotes, and backslashes inside SSIDs and passwords per WIFI: syntax rules.

Converts non-ASCII network names into hexadecimal SSID form for maximum scanner compatibility.

Explains how Android, iOS, and Windows differ when parsing WIFI: QR strings.

Plans paired 2.4 GHz and 5 GHz join cards with one payload string per band.

Creates sms: and SMSTO: strings with number and prefilled message and notes which phones support each form.

Counts GSM-7 and UCS-2 message segments for text embedded in SMS QR payloads.

Assembles mailto: URIs with recipient, subject, and prefilled body for scannable email codes.

Builds mailto: strings with comma-separated To, Cc, and Bcc lists without breaching URL limits.

Generates tel: dial strings with country codes and plus prefixes for tap-to-call codes.

Inserts comma and semicolon pauses or DTMF waits into tel: numbers for extension dialing.

Builds sip: and sips: URIs with user, host, and port for VoIP desk codes.

Encodes ussd: short codes with leading asterisks and trailing hashes for carrier service codes.

Creates facetime: and facetime-audio: links from phone numbers or Apple IDs.

Formats wa.me click-to-chat URLs with country code and prefilled text parameter.

Builds t.me links for public usernames and phone-number deep links.

Formats t.me/+ joinchat invite hashes for private group entry codes.

Turns discord.gg invite codes into full URLs for printed community codes.

Assembles zoom.us join URLs with meeting ID and passcode parameters.

Formats meet.google.com room codes into scannable join URLs.