QRコード生成

Use the free online QRコード生成 tool. Fast, private and easy to use — runs entirely in your browser. Part of our Web・開発者ツール collection.

CSS整形

Format and indent messy or minified CSS so it is easy to read and edit.

Shrink CSS by removing comments and whitespace for faster page loads.

Reindent and format JavaScript so it is readable again.

Strip comments and whitespace to reduce JavaScript file size.

Check whether your JSON is valid and see the exact error if it is not.

Convert XML documents into clean, readable JSON.

Break any URL into its protocol, host, path, query parameters and fragment.

Base URL Campaign source Campaign medium Campaign name Term Content

Create trackable campaign links with UTM parameters for analytics.

Convert a HEX color to RGB and HSL and preview the swatch.

Generate a downloadable QR code from any text or link, right in your browser.

Is the QRコード生成 free to use?

Yes. The QRコード生成 is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.

Is the QRコード生成 safe and private?

Absolutely. The QRコード生成 runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.

Do I need to install anything to use the QRコード生成?

No installation is needed. The QRコード生成 works instantly online in any modern browser on desktop, tablet or mobile.

Does the QRコード生成 work on mobile phones?

Yes. The QRコード生成 is fully responsive and works smoothly on iPhone, Android and any other device.