PrintDoctor: Receipt Printer

Receipt printer printing garbage? Drawer not opening? PrintDoctor finds, tests, and fixes ESC/POS printers - right from your phone.

The field toolbox for ESC/POS thermal receipt printers. Find, test, and fix any network receipt printer from your phone - no laptop, no vendor utility, no guesswork.

Built for POS technicians, systems integrators, and shop owners who just want the receipt printer to work.

FIND YOUR PRINTER

• Scan your WiFi network and find every printer listening on port 9100 in seconds
• Save printer profiles (name, IP, paper width) for one-tap access
• Works with any ESC/POS printer with a LAN or WiFi interface - Epson, Star, Xprinter, GOOJPRT, Rongta, MUNBYN, and the generic ones

TEST IT

• One-tap test pages: status page, font & style matrix, barcode + QR sample, 58/80mm ruler
• See exactly what your printer can do before you wire it into a POS

FIX GARBLED RECEIPTS (the killer feature)

• Chinese, accents, or symbols printing as garbage? The Codepage Matrix prints the same sample line under every common ESC/POS codepage - including Big5, GB18030, and UTF-8 modes - each one labelled
• Find the row that prints correctly, set that codepage in your POS software, done

CASH DRAWER

• Fire the drawer kick on pin 2 or pin 5 with selectable pulse widths
• Built-in wiring explainer (RJ11/RJ12) for drawer installs

PRINT LOGOS

• Pick any image, preview it in true 1-bit with three dithering algorithms (Floyd-Steinberg, Bayer, threshold), and print it as a raster logo

TRY EVERYTHING WITHOUT A PRINTER

• The built-in Virtual Demo Printer renders every print job as an on-screen receipt - test the whole app before you're even on site

HONEST BY DESIGN

• One-time purchase. No subscription, no watermarks, no print limits, no ads, no account
• Fully offline: the app talks only to printers on YOUR network, nothing else
• iPhone can't speak classic-Bluetooth SPP, so PrintDoctor doesn't pretend to - network printing done right, with a clear in-app explanation

Support: https://lampstandtech.com/printdoctor/support Privacy: https://lampstandtech.com/printdoctor/privacy