QR Code Scanner: free online, fast and secure
Sometimes the QR code is already on your screen: in a screenshot, a WhatsApp image or a PDF. You cannot point your phone camera at its own screen. This scanner reads QR codes directly from image files.
It detects links, UPI payment details, Wi-Fi credentials, contact cards and plain text, and lets you copy the result or open links.
How to use QR Code Scanner
- Add an image. Upload a photo or screenshot, or paste it with Ctrl+V.
- Automatic scan. The QR is found and decoded, even if small or inverted.
- Use the result. Copy the text or open the link.
Why use ConvertKaro QR Code Scanner? Free, fast and secure
Here is what makes this QR Code Scanner tool different from most websites.
100% Free
Every feature of this tool is free for everyone. We do not lock better quality or bigger files behind a paid plan.
Fast results
Your file is processed right inside your browser, so there is no upload or download queue. Most jobs finish in a second or two, even on a slow mobile connection.
Secure and private
Privacy is built in: the conversion runs locally with JavaScript, so your data is never sent to us or anyone else. Close the tab and everything is gone.
No signup, no watermark
No registration and no watermark, ever. What you download is exactly your file.
Works on every device
Works in Chrome, Safari, Edge and Firefox on Android, iPhone, Windows, Mac and Linux. No app to install.
Check before you pay
See the UPI ID and amount inside a payment QR before scanning it with a UPI app.
ConvertKaro vs other websites and apps
| ConvertKaro | Typical website or app | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your data | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
Common uses for QR Code Scanner
- Reading QR codes in screenshots
- Checking where a QR link goes before opening it
- Verifying UPI payment QR details
- Getting Wi-Fi passwords from QR images
- Decoding QR codes on a computer
Tips for the best results
- Crop the image around the QR if it is very small in a big photo.
- Make sure the whole code, including corners, is visible.
- Be careful with unknown links; check the domain first.
- Create your own codes with QR Code Generator.
Good to know
Developers often paste API keys, tokens, customer data and internal code into online tools without thinking about where that data goes. Many “free” developer websites send everything to their servers and log it. QR Code Scanner runs completely in your browser using standard web APIs, so it is safe for production data. It also works offline once loaded, which makes it handy on slow connections or restricted networks.
| Price | Free, no limits |
|---|---|
| Processing | In your browser, instant |
| Signup | Not required |
| Watermark | None |
| Works on | Android, iPhone, Windows, Mac, Linux |
| Category | Developer tools |
How QR Code Scanner keeps your code and data private
QR Code Scanner is written in JavaScript and runs entirely inside the browser tab you have open. When you type or paste, the result is calculated on your own device. Nothing is sent to ConvertKaro or any third party, nothing is saved in a database, and there are no accounts or tracking of what you enter. That makes it safe for private code and data, such as salary figures, client data, API keys or personal notes.
Using QR Code Scanner on your phone
QR Code Scanner is designed for small screens. Buttons are large, options are simple, and results update as you type. On iPhone, downloaded files appear in the Files app under Downloads; on Android they go to the Downloads folder.
Who uses QR Code Scanner?
QR Code Scanner is used every day by people from many backgrounds, for example:
- Web developers and programmers
- Students learning coding and web design
- Digital marketers and SEO specialists
- Testers and support engineers debugging data
- Small business owners managing their own websites
Supported input: Plain text, JSON, CSS, JavaScript, HTML, URLs, Base64, tokens and image files where relevant.
Frequently asked questions
Can it scan a QR from my gallery?
Yes. Upload any photo or screenshot containing a QR code.
Why is no QR found?
The image may be blurry, cropped or too small. Try a sharper or closer image.
Is the image uploaded?
No. Scanning happens on your device.
Is QR Code Scanner really free?
Yes. QR Code Scanner on ConvertKaro is 100% free with no limits, no signup and no watermark. There is no paid version.
Is it safe to use QR Code Scanner online?
It is one of the safest ways to do it, because nothing is uploaded. All processing happens locally on your device, and the files disappear when you close the page.
Does QR Code Scanner work on mobile?
Yes. It works in Chrome and Safari on Android phones and iPhones, as well as on tablets and computers. No app is needed.
Do I need to install anything to use QR Code Scanner?
Nothing to install. Open the page in any modern browser and it works immediately, even offline after loading.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Copy or download the result as it is.
Does QR Code Scanner work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.
Related free tools
You may also find these tools useful: QR Code Generator, Barcode Generator, URL Encode Decode, Crop Image, Base64 to Image.