Universal QR Code Page Sharer

WHAT IT DOES

Universal QR Code Page Sharer generates a QR code for the current webpage URL with a single click. The QR code is displayed in a clean overlay panel and can be downloaded as a PNG image for use in presentations, print materials, or sharing on social media. The tool also provides a one-click button to copy the page URL to your clipboard for easy sharing via other channels. With customizable QR code size and error correction levels, you can generate the perfect QR code for any use case — from small print applications to high-resolution digital displays.

WHERE IT RUNS

This extension works on any website across the entire web. It functions on articles, product pages, portfolio sites, documentation, and any other page you want to share. The tool uses a public QR generation API, so it works without requiring local QR generation libraries or additional dependencies.

HOW TO USE

Install the extension and navigate to any webpage you want to share. The QR code overlay panel appears automatically. Click "Generate QR Code" to create a QR code for the current page URL — the code appears in the preview area. Adjust the QR code size using the dropdown (Small, Medium, Large) to control the pixel dimensions. Change the error correction level (L, M, Q, H) to balance error tolerance against code density. Toggle "Show URL below QR" to display the page URL beneath the QR code for reference. Toggle "Auto-generate on page load" to automatically create QR codes as you navigate. Click "Download QR Code (PNG)" to save the QR code as a PNG image file. Click "Copy Page URL" to copy the current page URL to your clipboard.

TECHNICAL SECTION — QR GENERATION API INTEGRATION

The extension uses the free public QR code generation API at api.qrserver.com, which provides reliable QR code generation without requiring any API key or authentication. The tool constructs a query string with the page URL (URL-encoded), the desired pixel size (configurable from 150px to 400px), a 16px quiet zone margin, and the selected error correction level. The API returns a PNG image directly, which is fetched using GM_xmlhttpRequest with responseType: "blob" to handle binary image data correctly. The blob is converted to an object URL and displayed in the panel using an image element. This approach avoids the need for third-party JavaScript QR libraries, reduces memory usage, and ensures consistent QR code generation across all sites. The tool also manages object URL lifecycle by revoking URLs when new QR codes are generated, preventing memory leaks.

THE PANEL — DRAG / PER-SITE POSITION / SNAP / COLLAPSE / RESIZE / ESCAPE

The overlay panel is fully interactive and designed for seamless multitasking. Drag it anywhere on the screen using the handle at the top of the panel; the position is saved per site so it stays where you left it across sessions. The panel includes a snap-to-edge feature that gently anchors the overlay to the nearest screen edge when released. Click the collapse button to minimize the panel to a compact pill showing the current QR status; expand it again with a single click. Resize the panel vertically by dragging the bottom-right corner to view more controls or a larger QR preview. Press the Escape key at any time to instantly close the overlay; it reappears on the next page navigation or refresh.

PLEASE NOTE

This extension requires the free BotGentz companion extension to function, as it provides the underlying content script injection and cross-origin communication framework. No personal data, browsing history, or page content is stored, transmitted, or shared. The extension sends the page URL to the QR generation API (api.qrserver.com) solely to generate the QR code; no other information is transmitted. Settings are stored locally in your browser using GM_setValue and are never sent to any external server. The extension does not access or store login credentials, financial data, or personally identifiable information. The QR generation API is a free public service and may have rate limits or occasional downtime. If the API is unavailable, the QR code generation will fail and display an error message. The downloaded PNG image is generated server-side and should be used in accordance with the API's terms of service.