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QR Code Scanner

Decode QR codes from a screenshot or photo instantly.

Drag & drop files here

or use the button below · processed locally on your device

Free file tool

Free QR Code Scanner online

Decode QR codes from a screenshot or photo instantly. Use the tool directly in your browser with no sign-up. It supports multiple source files in the same session, so it also works as a free batch tool when you have more than one file.

Free to use

No payment required for this tool.

Batch conversion

Queue multiple source files in one session.

Browser-based

The conversion workflow runs from the web page on your device.

No sign-up

Start the file workflow without creating an account.

What QR Code Scanner is useful for

  • Reading a QR code from a screenshot
  • Checking a code before opening its destination
  • Recovering text or a URL from an image

Input and output checks

Accepted input: Text or settings entered on the page.

  • Open the downloaded output before deleting or replacing the source file.
  • Check the details that matter for your use: page count, dimensions, orientation, text, duration or metadata.
  • For batch jobs, confirm every queued file produced the expected output.

How to use this calculator: QR Code Scanner

  1. 1Drag & drop your file onto the upload zone, or tap Browse Files.
  2. 2Review the detected file information — size, type, resolution or page count.
  3. 3Tune the output settings to match what you need.
  4. 4Press Convert and watch the progress bar; processing happens locally in your browser.
  5. 5Download individual results, or use Download All to get a ZIP of everything.

Worked conversion example

Example: upload a clear, upright scan with good contrast. Review every extracted character—blur, handwriting, skew and decorative fonts reduce OCR confidence.

Accepted input
Text or settings entered on the page
Batch behaviour
Multiple files supported

How the browser process works

Decode QR codes from a screenshot or photo instantly. The page sends the selected file and settings to its qr-scan browser engine, creates a new output and downloads it without overwriting the source.

Privacy, quality checks and limitations

  • Keep the original file until the downloaded output has been opened and checked.
  • Verify page count, orientation, dimensions, text legibility, audio/video duration and metadata relevant to your use.
  • Browser-local processing reduces routine upload exposure, but your device, browser extensions and download location still matter.
  • A converted preview is not proof of legal authenticity, archival compliance, accessibility or digital-signature validity.

Frequently asked questions

Is QR Code Scanner free to use?

Yes. You can use QR Code Scanner on OneCalcApp without paying or creating an account.

Does QR Code Scanner support batch files?

Yes. This tool accepts multiple source files in the same session so you can process a batch without reopening the page for every file.

Do I need to sign in?

No. The conversion workflow can be used without signing in.

What should I check after conversion?

Open the downloaded output and compare the page count, dimensions, orientation, text readability, duration or other details that matter for your file type before replacing the original.

Does the tool overwrite my original file?

No. The tool creates a new output for download, so keep your original source until you have checked the converted result.

Related converters

🔳 QR Code Generator▮ Barcode Generator

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