A virtual thermal printer for testing ESC/POS receipts

What it does

Send every ESC/POS stream over a plain HTTP API, then preview, search and observe each receipt your printers produced — without ever rolling a single inch of paper. -------------------------------- Order #4521 14:32 Table 12 Cashier Marta -------------------------------- 2x Iced Americano 8.00 1x Caramel Latte 5.50 1x Avocado Toast 11.00 -------------------------------- Subtotal 24.50 Tax (8.8%) 2.16 TOTAL $26.66 -------------------------------- Paid by VISA *4421 *** THANK YOU *** ================================ Live preview Paste the raw ESC/POS your POS would send and vprinter decodes every control byte — alignment, sizing, bold, cuts — into the exact receipt that would have printed.…from vprinter.dev

• 
  Thermal Receipt Printers – Markdown and Web UIMar 2026 · github.com · ▲119

  Contribute to sadreck/ThermalMarky development by creating an account on GitHub.

• PT
  Printercow – Turn any thermal printer into an API endpoint2025 · printercow.com · ▲150

  I've always been fascinated by thermal printers – there's something magical about seeing text and images materialize on paper in seconds. But I found that working with them programmatically was always a pain. You either had to deal with ancient printer protocols or use clunky vendor-specific SDKs. So I built Printercow (https://printercow.com) – it turns any thermal printer into an HTTP endpoint with just one command. Technical details: - Supports any ESC/POS compatible printer (Epson, Star Micronics, etc.) - Handles paper widths from 58mm to 120mm - Automatic image dithering…

• AN
  Aviation navigation log on $20 receipt printer2023 · carloslagoa.com · ▲373
• 
  QuickReceipts2019 · quickreceipts.co · ▲79

  Digital receipts API without emails, phone numbers, or paper

• 
  Print the daily weather forecast on a thermal receipt printer2025 · github.com · ▲21

  I wrote this simple Python script that prints the daily weather forecast on those cheap thermal receipt printers you can get online for under fifty bucks. It fetches weather data, converts the icons to something printable, and outputs everything in ESC/POS format so you can pipe it directly to /dev/USB/lp0. Nothing fancy, i just thought it would be nice to have a physical weather printout each morning. You can configure it with your GPS coordinates and timezone, and stick it in a cron job. Enjoy!

• 
  Werewolf Receipt2019 · werewolf.zac.nz · ▲70

  Instantly print and play games using a receipt printer

• 
  /dev/null▲484

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  Fundraisly▲1,537

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• 
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• 
  Performative-UI – A react component library of design tropes▲1,181

  Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲976

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲958

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• 
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.

  Life & fun · Jun 2026 · hackernewstrends.com