QR Code generator version: 1.0.0 Released

QR Code generator version 1.0.0 released.


  • QR Code generation.
  • Specify background and foreground square colours.
  • Share current QR Code control URL.
  • Share current QR Code URL.
  • Download QR Code as image.
  • Use in iframe.


QR Code Generation from URL

This web application offers QR Code generation from URL input, similar to many other QR Code services.
Simply add the QR Code and click the update button to generate the QR Code.
QR Code state is kept in the URL query parameters, so it is easy to share access to the current QR Code being created.


An important feature of this QR Code generator is the ability to change the colour of the QR Codes.
Both the black squares and white background can be changed to any colour of your choosing.
Sizing is currently not supported. Images are generated as PNG. These can be improved upon if enough requests are received.


Download generated images by right-click, drag & drop, or any other browser image saving method.


The main reason for the creation of this QR Code generator is the ability to link with other applications.
In addition to storing the state of the QR Code being created in the URL, it is also possible to output only the QR code and share this by URL.
This provides the ability to embed QR codes in other web pages using IFrames.

<iframe src="https://theopenweb.info/app/qr-code-generator?qrcode-only" style="width: 155px;"></iframe>

The service can be found at the URL below:

Please feel free to send your requests for improvements at https://theopenweb.jp#contact

Tax-calculator version: 1.0.0-alpha Released

Tax Calculator alpha release

Tax Calculator has been released under the initial α(alpha) version.



This application aims to provide taxation and related calculation services in an efficient and fair way.
Similar applications have tended to focus on being protective and so difficult to import/export from/to and link with.
This has been an issue for The Open Web business due to the policy of open linking being at the centre of our business policies.
Similar applications being expensive compared to applications of different categories is to be expected due to the legal implications and expertise required for such services.
However, unchanging, user-contributed areas should tend to be free and open.
This is something this application aims to achieve.
Under the alpha version, released features have been limited, but this will be gradually expanded on.
Any feedback will be much appreciated, and will help improve this application.



Mainly fixed values such as rates and prices.
Examples include tax rates, fixed tax amounts, etc.
These are generally easy to add. Please feel free to contact to contribute or request additional constants.

Pure Calculations

Calculations that include no state.
State (stored data) is under development, and is scheduled to be added once better tested.
These calculations generally take 1 or more inputs, but may take zero in certain cases.
Inputs may use any native HTML input or custom-made input types.
Currently, inputs are generally text and number types, with some text types expecting numbers only.
On calculation execution, the result will be shown. Sometimes errors will be shown.
Errors at this stage may be due to bugs. However, errors in general may happen where inputs or results are out of bounds, etc.
Improvements will be made gradually, prioritizing easy-to-fix and popular areas.

Alpha Release Notes

This initial version is currently under development and so may have bugs.
It is being released in alpha stage until major bugs have been fixed.
Due to being in relatively early development stages and using automation,
some information/calculations currently use programmatic and unclear terms.
These will be gradually improved over time. If there are any that you want to be prioritized, please feel free to get in contact.
Please feel free to contact about any improvements and feature additions wanted.