Tentang
Thermal printer controller langsung dari browser — tanpa aplikasi tambahan. Mendukung Bluetooth BLE, USB Serial, dan Bridge (Bluetooth Classic via Android relay).
PWA
Offline-ready
Web Bluetooth
Web Serial
ESC/POS
Fitur
TeksBold, underline, alignment, font scale
GambarUpload + konversi B&W, brightness/contrast
QR CodeGenerate & print, ukuran & error correction
BarcodeCode 128, EAN, HRI label, tinggi custom
TabelMulti-kolom, header & border opsional
GabunganBlock editor — mix semua tipe konten
TemplateReceipt / struk — item, diskon, pajak
Riwayat10 print terakhir di localStorage
Koneksi
Bluetooth BLEChrome Android — langsung ke printer
USB / SerialChrome Mac/Win via Web Serial API
Bridge · BT ClassicRelay via Android bridge app
File
printme/
├── index.html — main app
├── style.css — impeccable UI (992 baris)
├── app.js — main controller (1108 baris)
├── bluetooth.js — Web Bluetooth BLE
├── webserial.js — Web Serial (USB)
├── bridge.js — BT Classic bridge
├── escpos.js — ESC/POS command builder
├── qr-gen.js — QR code generator
├── history.js — print history (localStorage)
├── sw.js — pass-through Service Worker
├── manifest.json — PWA manifest
├── reset.html — cache reset tool
└── readme/ — halaman ini
Server: /opt/caddy/sites/ican/printme/ · Caddy static file server
Cache & Service Worker
SW (sw.js) adalah pass-through — tidak ada caching. Semua request langsung ke network.
Saat SW diupdate: install → skipWaiting() → activate → clear cache → clients.claim() → page auto-reload via controllerchange event.
UI broken (CSS tidak load)?
Buka
/printme/reset.html — unregister SW lama + clear semua cache, lalu kembali ke app.