The QR Code Reader Web API can decode QR Codes from images and PDF documents. It can read QR Codes individually or in batches. The QR Code Reader Web API can narrow down its search to only return the QR Code values when other barcode types are present in a document.

Our QR Code Reader Web API is secure. We do not use 3rd party API to process your documents. To learn more about PDF.co Security, please check out our Security page here.

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QR Code Reader Web API Integrations

PDF.co has over 300+ app integration. Kindly explore our following plugins:

Benefits of Using Our Barcode Reader API

Bulk Barcode Reader

Our API barcode reader allows you to read your QR barcodes asynchronously on our servers. By using our cloud-based QR code reader API, you can read your codes in bulk. That saves you time allowing you to focus on other aspects of your business.

Read Multiple QR Codes

The QR Code Web API can decode single or multiple QR Codes in a document. It can read QR Codes file by file or use automation to batch read the QR Codes from several documents.

Read Protected Files

The Web API can decode QR Codes from protected files. It supports documents that require HTTP username and password authentication.

Read Specific Page(s)

The Web API supports page(s) and page range(s) selection. This will not only read QR Codes from those specific pages but also help with faster document processing.

Read Skewed QR Codes

The QR Code Web API can read skewed QR Codes. The engine can detect the QR Code rotation without specifying the angle. Check out our demo below.

Easy Integration

Our QR code online scanner includes a built-in OCR, and it includes Zapier, Integromat, UiPath, and BluePrism plugins. You can easily connect with the most popular applications through our 300+ API integrations.

On-Premise API Server

The PDF.co QR Code Reader Web API has an on-premise API Server version. This will give you more control over document processing. You can send us a request to try this module by contacting our support team.

QR Code Scanning Large Files

To use our QR code reader to scan large files without getting a timeout error, you must run the scans in async mode. However, if you want to scan a barcode or barcodes from 100 pages or fewer, then you can run the QR reader API in sync mode.

The Sync mode runs for 25 seconds or less, while the async mode runs for more than 25 seconds, and is in the background. It then outputs the QR scan output after it successfully scans all the barcodes.

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How to Run to Use Online QR Scanner

In this demonstration, we will read 50 QR Codes in a PNG. Some of these QR Codes are skewed to test the engine’s ability to read QR Codes. We will use the /v1/barcode/read/from/url endpoint to decode all the QR Codes. Below is the image of the input PNG and the decoded values.

50 QR Codes Input And Output
50 QR Codes Input And Output

Let’s go over the /v1/barcode/read/from/url endpoint’s parameters and their functions.

Endpoint

URL: https://api.pdf.co/v1/barcode/read/from/url
Method: POST
Parameter Description
url required. Comma-separated links to source files.
cache to enable built-in url caching.
types required. Comma-separated list of barcode types to decode.
async optional. Runs processing asynchronously. Returns jobId to use with job/check: true or false
httpusername http auth user name if required to access source url
httppassword http auth password if required to access source url
pages page number(s) or page range to decode barcode
profiles optional. Must be a String. Set custom configuration. See profiles examples here

cURL Code Snippet

curl --location --request POST 'https://api.pdf.co/v1/barcode/read/from/url' 
--header 'x-api-key: YOUR_API_KEY' 
--header 'Content-Type: application/json' 
--data-raw '{
    "url": "filetoken://7e45e137fb4365dff46167014a069e0da596775f42cdfc94",
    "types": "QRCode",
    "pages": "0"
}'

The QR Code Reader Web API cURL sample code is available here.

Let’s see the QR Code Reader Web API in action using our cURL sample code.

 

QR Code Reader Web API Demo
QR Code Reader Web API Demo

The QR Code Reader Web API JavaScript sample code is available here.

The QR Code Reader Web API PHP sample code is available here.

The QR Code Reader Web API Python sample code is available here.

The QR Code Reader Web API Java sample code is available here.

The QR Code Reader Web API C# sample code is available here.

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How to Use QR Code Reader API – Frequently Asked Question

Can you scan a QR code without an app?

Yes, you can scan a QR code without an app, just by using our Barcode Reader Web API.

You will need a Web API like ours to scan your QR codes and barcodes in bulk. Our barcode scanner API is very powerful to scan QR codes faster.

How do I scan QR codes?

You can scan a QR code by using QR Code Reader API or its integration. The scanner’s app then extracts data from a QR code and presents it to you.

What Does QR Code Stand For?

QR stands for “Quick Response Code”, and they provide businesses with an easy way to store product data while making it easily accessible. They are indispensable at Points of Sale, because of their ease of use, and reliability.

Is QR Code Safe?

Yes, a QR code is safe to use, if you receive it from a reliable source. However, you must be careful when using it to access a website that asks for sensitive information, such as a bank account, or your home address.

If the website’s URL is different from what you expected to see, then you must close your browser tab immediately.

Who Owns QR Code?

Denso’s Engineer Hara Masahiro, from Aichi, Japan, invented the QR code. The motivation was to replace the barcodes, which could only store a limited amount of data.

One QR code can store as much information as 200 barcodes. That makes it efficient to use when you need to store and scan large amounts of information at once.

You can integrate our online scanner to scan documents with your mobile device or upload them for QR scanning on the cloud. For more API code samples, and how to use our code scanner, please check these code samples.

Related Pages:

Related Samples: