Learn How to Install and Use Recta Host for Direct Printing from JS
How to Download and Use Recta Host for Direct Printing from Browser
If you are a web developer who needs to print receipts, labels, or other documents from your web application, you might have encountered some challenges with the traditional printing methods. For example, you might have to deal with different printer drivers, settings, formats, margins, or compatibility issues. Moreover, you might have to rely on third-party plugins or extensions that might not be secure or reliable.
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Fortunately, there is a simple and powerful solution for direct printing from browser to thermal printer. It is called Recta Host, and in this article, we will show you how to download and use it for your printing needs.
What is Recta Host and Why You Need It
Recta Host is a desktop software that enables direct printing from browser to thermal printer
Recta Host is a desktop software that acts as a bridge between your browser and your thermal printer. It uses Websocket to communicate with your web application and send commands to your printer. It supports various features such as text, images, barcodes, QR codes, cutters, cash drawers, and more.
Recta Host is useful for web developers who need to print receipts or labels from web applications
If you are developing a web application that requires printing functionality, such as a point of sale (POS) system, an inventory management system, or an e-commerce platform, you can benefit from using Recta Host. With Recta Host, you can:
Print directly from your browser without any plugins or extensions
Print faster and more reliably than using the print dialog or PDF preview
Print with high quality and accuracy using thermal printers
Print with various features and options such as fonts, alignments, boldness, underlines, barcodes, QR codes, cutters, cash drawers, etc.
Print with any platform (Windows, Linux, Mac) and any browser (Chrome, Firefox, Safari, Edge)
Print with any thermal printer that supports ESC/POS commands
How to Download Recta Host
You can download Recta Host from GitHub or use npm to install it
There are two ways to get Recta Host on your computer. You can either download the installer or compile it from source.
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If you want to download the installer , you can find the latest version on the GitHub release page. You can choose the installer for your platform (Windows, Linux, or Mac) and run it. The installer will guide you through the installation process and create a shortcut for Recta Host on your desktop.
If you want to compile Recta Host from source, you need to have some build tools and dependencies installed on your system. You can follow the instructions on the GitHub repository to install them. Then, you can use npm to install Electron Forge, a tool for creating Electron applications. After that, you can use npm to install the dependencies and compile Recta Host. You will find your installer on the out/make folder.
How to Use Recta Host
You need to install the WinUSB driver for your printer using Zadig (Windows only)
If you are using Windows, you need to install a driver for your thermal printer that supports the WinUSB interface. This will allow Recta Host to communicate with your printer using the node-usb library. You can use Zadig, a tool that can install generic USB drivers, to do this.
To install the WinUSB driver using Zadig, you need to follow these steps:
Download and run Zadig from its website. You may need to run it as administrator.
Select Options > List All Devices from the menu.
Select your thermal printer from the drop-down list. It may have a name like USB Printing Support or something similar.
Select WinUSB from the driver list. If it is not there, click the arrow next to the driver list and choose WinUSB.
Click Replace Driver or Install Driver. You may see a warning message, click Yes to continue.
Wait for the installation to finish. You should see a message saying Driver Installation Successful.
Now you have installed the WinUSB driver for your printer and you can use Recta Host with it.
You need to create an APPKEY and configure the port for your printer
Before you can use Recta Host with your web application, you need to create an APPKEY and configure the port for your printer. The APPKEY is a unique identifier that is used to authenticate your web application with Recta Host. The port is the number that is used to communicate with Recta Host via Websocket.
To create an APPKEY and configure the port for your printer, you need to follow these steps:
Run Recta Host from your desktop shortcut or from the start menu.
You will see a window with a QR code and some information. The QR code contains the APPKEY and the port that are generated automatically for you. You can scan the QR code with your phone or tablet to get them.
If you want to change the APPKEY or the port, you can click on the Settings button at the bottom right corner of the window. You will see a dialog where you can enter a new APPKEY or port. Make sure they are valid and not in use by other applications.
Click Save to apply your changes. You will see a new QR code with your updated APPKEY and port.
Now you have created an APPKEY and configured the port for your printer and you can use them in your web application. You need to include the Recta library in your web application and create a Recta object with your APPKEY and port
After you include the Recta library, you need to create a Recta object with your APPKEY and port. The Recta object is the main interface for communicating with Recta Host and sending commands to your printer. You can create a Recta object using the following syntax:
var recta = new Recta(APPKEY, PORT);
Where APPKEY is the APPKEY that you created and configured in Recta Host, and PORT is the port that you configured in Recta Host. For example:
var recta = new Recta('1234567890', 3000);
Now you have included the Recta library and created a Recta object with your APPKEY and port and you can use the Recta API to print from browser.
You can use the Recta API to print text, images, barcodes, and other features
The Recta API is a set of methods and properties that you can use to print text, images, barcodes, QR codes, cutters, cash drawers, and other features from browser. You can use the Recta API by calling the methods on the Recta object that you created. For example:
recta.print('Hello World!'); // prints Hello World!
The Recta API follows the ESC/POS commands, which are a standard for controlling thermal printers. You can find more information and examples of the ESC/POS commands on the GitHub repository. You can also find more information and examples of the Recta API on the GitHub wiki.
Here is a table that summarizes some of the common methods and properties of the Recta API:
Method or Property Description Example ------------------------------------------ print(text) Prints text on the paper recta.prin