LinQR

linqr · Company

Company No Auth Free & Open API

This is LinQR QR Code API documentation. This API allows you to generate custom, visually attractive QR Codes. The cloud infrastructure guarantees high availability and autoscalability of the service. You can generate hundreds of thousands of images this way and use them however you like. We realize that your API use case may require custom solutions, and perhaps we lack functionality that is very important to you. In that case feel free to write an email to our support and tell us about it. We

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET List all images

This endpoint allows you to list images hosted in the LinQR storage. If there are no images hosted, an empty array is returned.

https://api.apis.guru/v2/specs/linqr.app/2.0/images

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/linqr.app/2.0/images"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/linqr.app/2.0/images",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/linqr.app/2.0/images';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/linqr.app/2.0/images"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/linqr.app/2.0/images")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/linqr.app/2.0/images";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List image

This endpoint allows you to list single image hosted in the LinQR storage.

https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/linqr.app/2.0/images/{id}";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST Upload image

This endpoint allows you to upload images to LinQR storage. In the response, metadata of the submitted image is sent, including the identifier used by other endpoints from the `Image management` group for image identification.

https://api.apis.guru/v2/specs/linqr.app/2.0/images

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/linqr.app/2.0/images"

import requests
response = requests.post(
    "https://api.apis.guru/v2/specs/linqr.app/2.0/images",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/linqr.app/2.0/images';

const response = await fetch(url, {
  method: 'POST',
}); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/linqr.app/2.0/images"
	req, _ := http.NewRequest("POST", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/linqr.app/2.0/images")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Post.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/linqr.app/2.0/images";
$opts = ["http" => [
    "method" => "POST",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with LinQR?

LinQR is a Company API. Developers commonly use company APIs for:

enriching CRM records with company firmographics
building lead-generation and prospecting tools
verifying business identity and registration details
monitoring competitors and market intelligence
powering B2B data enrichment pipelines

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. LinQR is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide · Learn about API keys · What is REST?

Open documentation ↗