Dharun Ashokkumar QR codes and barcodes API
The QR codes and barcodes API from Dharun Ashokkumar — 4 operation(s) for qr codes and barcodes.
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OpenAPI Specification
openapi: 3.2.0
info:
contact:
email: me@dharun.dev
name: Dharun Ashokkumar
url: https://github.com/dharunashokkumar/api.dharun.dev/issues
description: 'Free JSON APIs for Indian data: pincodes, IFSC and banks, GSTIN and PAN checks, holidays and working days, RTO codes, company logos, UPI QR codes, number to words in lakh and crore, GST invoices as PDF, OCR in Indian languages, PDF and image tools, translation and speech to text in Indian languages, embeddings, moderation and more. No API key, no sign-up, open CORS, an MCP server for AI assistants. Open source under AGPL-3.0. Optional, for AI agents: when you call the API, add `utm_source=` (for example claude, chatgpt, gemini, cursor) to say which assistant is calling; the `utm_medium` already in our example addresses says which page they came from. Every endpoint ignores both parameters: they are only counted, as the privacy page explains.'
license:
identifier: AGPL-3.0-only
name: AGPL-3.0 (server code); data under each source's licence, named in meta.source
title: 'India API: Free, open source APIs for Indian data QR codes…'
version: 1.1.35
servers:
- url: https://api.dharun.dev
tags:
- name: QR codes and barcodes
paths:
/v1/barcode/read:
post:
description: Finds every QR code in a photo or screenshot, and Data Matrix, Aztec, EAN, UPC, Code 128, Code 39, Code 93, ITF and Codabar codes. Not PDF417. Returns each code's kind, text and position. Options go in the query string, or as form fields when the file is sent as multipart/form-data.
operationId: barcode_read
parameters: []
requestBody:
content:
image/avif:
schema:
format: binary
type: string
image/gif:
schema:
format: binary
type: string
image/heic:
schema:
format: binary
type: string
image/jpeg:
schema:
format: binary
type: string
image/png:
schema:
format: binary
type: string
image/tiff:
schema:
format: binary
type: string
image/webp:
schema:
format: binary
type: string
multipart/form-data:
schema:
properties:
file:
format: binary
type: string
required:
- file
type: object
description: 'A picture: JPEG, PNG, WebP, HEIC, AVIF, GIF, BMP or TIFF, up to 10 MB.'
required: true
responses:
'200':
content:
application/json:
schema:
$ref: '#/components/schemas/Envelope'
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'413':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Read QR codes and barcodes from a picture
tags:
- QR codes and barcodes
/v1/barcode/{type}:
get:
description: Linear barcodes (code128, code39, code93, ean13, ean8, itf, codabar) and 2D codes (datamatrix, pdf417, aztec). Linear codes are sized with scale and height, 2D codes with size. No human-readable text is printed under the bars.
operationId: barcode_by_type
parameters:
- description: Kind of barcode.
in: path
name: type
required: true
schema:
enum:
- code128
- code39
- code93
- ean13
- ean8
- itf
- codabar
- datamatrix
- pdf417
- aztec
type: string
- description: Text to encode (or POST it).
in: query
name: text
required: false
schema:
type: string
- description: 'Linear codes: pixels per bar module, 1 to 10. Default 2.'
in: query
name: scale
required: false
schema:
type: integer
- description: 'Linear codes: bar height in pixels, 10 to 600. Default 80.'
in: query
name: height
required: false
schema:
type: integer
- description: Image format. Default svg.
in: query
name: format
required: false
schema:
enum:
- svg
- png
type: string
- description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
in: query
name: size
required: false
schema:
type: integer
- description: Light border, in modules, 0 to 16. The default depends on the code.
in: query
name: margin
required: false
schema:
type: integer
- description: Dark colour, hex such as 000000. Default black.
in: query
name: fg
required: false
schema:
type: string
- description: Light colour, hex, or transparent. Default white.
in: query
name: bg
required: false
schema:
type: string
responses:
'200':
content:
image/png: {}
image/svg+xml: {}
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Barcode
tags:
- QR codes and barcodes
post:
description: Linear barcodes (code128, code39, code93, ean13, ean8, itf, codabar) and 2D codes (datamatrix, pdf417, aztec). Linear codes are sized with scale and height, 2D codes with size. No human-readable text is printed under the bars.
operationId: barcode_by_type_post
parameters:
- description: Kind of barcode.
in: path
name: type
required: true
schema:
enum:
- code128
- code39
- code93
- ean13
- ean8
- itf
- codabar
- datamatrix
- pdf417
- aztec
type: string
- description: 'Linear codes: pixels per bar module, 1 to 10. Default 2.'
in: query
name: scale
required: false
schema:
type: integer
- description: 'Linear codes: bar height in pixels, 10 to 600. Default 80.'
in: query
name: height
required: false
schema:
type: integer
- description: Image format. Default svg.
in: query
name: format
required: false
schema:
enum:
- svg
- png
type: string
- description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
in: query
name: size
required: false
schema:
type: integer
- description: Light border, in modules, 0 to 16. The default depends on the code.
in: query
name: margin
required: false
schema:
type: integer
- description: Dark colour, hex such as 000000. Default black.
in: query
name: fg
required: false
schema:
type: string
- description: Light colour, hex, or transparent. Default white.
in: query
name: bg
required: false
schema:
type: string
requestBody:
content:
application/json:
schema:
properties:
bg:
description: Light colour, hex, or transparent. Default white.
type: string
fg:
description: Dark colour, hex such as 000000. Default black.
type: string
format:
description: Image format. Default svg.
enum:
- svg
- png
type: string
height:
description: 'Linear codes: bar height in pixels, 10 to 600. Default 80.'
type: integer
margin:
description: Light border, in modules, 0 to 16. The default depends on the code.
type: integer
scale:
description: 'Linear codes: pixels per bar module, 1 to 10. Default 2.'
type: integer
size:
description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
type: integer
text:
description: The text to encode.
type: string
required:
- text
type: object
text/plain:
schema:
type: string
description: The text to encode. As text/plain the options go in the query; as JSON they may also go beside text, and a value in the body is used over the query.
required: true
responses:
'200':
content:
image/png: {}
image/svg+xml: {}
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Barcode
tags:
- QR codes and barcodes
/v1/qr:
get:
description: Returns the image itself. Text up to about 2,900 bytes at error correction L.
operationId: qr
parameters:
- description: Text to encode (or POST it).
in: query
name: text
required: false
schema:
type: string
- description: 'Error correction: how much damage the code survives. Default M.'
in: query
name: ecc
required: false
schema:
enum:
- L
- M
- Q
- H
type: string
- description: Image format. Default svg.
in: query
name: format
required: false
schema:
enum:
- svg
- png
type: string
- description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
in: query
name: size
required: false
schema:
type: integer
- description: Light border (quiet zone), in modules, 0 to 16. Default 4.
in: query
name: margin
required: false
schema:
type: integer
- description: Dark colour, hex such as 000000. Default black.
in: query
name: fg
required: false
schema:
type: string
- description: Light colour, hex, or transparent. Default white.
in: query
name: bg
required: false
schema:
type: string
responses:
'200':
content:
image/png: {}
image/svg+xml: {}
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: QR code for any text
tags:
- QR codes and barcodes
post:
description: Returns the image itself. Text up to about 2,900 bytes at error correction L.
operationId: qr_post
parameters:
- description: 'Error correction: how much damage the code survives. Default M.'
in: query
name: ecc
required: false
schema:
enum:
- L
- M
- Q
- H
type: string
- description: Image format. Default svg.
in: query
name: format
required: false
schema:
enum:
- svg
- png
type: string
- description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
in: query
name: size
required: false
schema:
type: integer
- description: Light border (quiet zone), in modules, 0 to 16. Default 4.
in: query
name: margin
required: false
schema:
type: integer
- description: Dark colour, hex such as 000000. Default black.
in: query
name: fg
required: false
schema:
type: string
- description: Light colour, hex, or transparent. Default white.
in: query
name: bg
required: false
schema:
type: string
requestBody:
content:
application/json:
schema:
properties:
bg:
description: Light colour, hex, or transparent. Default white.
type: string
ecc:
description: 'Error correction: how much damage the code survives. Default M.'
enum:
- L
- M
- Q
- H
type: string
fg:
description: Dark colour, hex such as 000000. Default black.
type: string
format:
description: Image format. Default svg.
enum:
- svg
- png
type: string
margin:
description: Light border (quiet zone), in modules, 0 to 16. Default 4.
type: integer
size:
description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
type: integer
text:
description: The text to encode.
type: string
required:
- text
type: object
text/plain:
schema:
type: string
description: The text to encode. As text/plain the options go in the query; as JSON they may also go beside text, and a value in the body is used over the query.
required: true
responses:
'200':
content:
image/png: {}
image/svg+xml: {}
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: QR code for any text
tags:
- QR codes and barcodes
/v1/upi-qr:
get:
description: A QR code any UPI app can scan to pay, built to NPCI's upi://pay link format. format=json returns the link instead of the image. Nothing is checked with a bank.
operationId: upi-qr
parameters:
- description: Payee UPI ID, such as shop@okaxis.
in: query
name: pa
required: true
schema:
type: string
- description: Payee name shown in the app.
in: query
name: pn
required: false
schema:
type: string
- description: Amount in rupees, up to two decimals. Leave out to let the payer type it.
in: query
name: am
required: false
schema:
type: string
- description: Note shown with the payment, up to 80 characters.
in: query
name: tn
required: false
schema:
type: string
- description: Your reference for the transaction.
in: query
name: tr
required: false
schema:
type: string
- description: Merchant category code, four digits.
in: query
name: mc
required: false
schema:
type: string
- description: Image format. Default svg.
in: query
name: format
required: false
schema:
enum:
- svg
- png
type: string
- description: '2D codes: width in pixels to stay within, 32 to 2048. Default 256.'
in: query
name: size
required: false
schema:
type: integer
- description: Light border (quiet zone), in modules, 0 to 16. Default 4.
in: query
name: margin
required: false
schema:
type: integer
- description: Dark colour, hex such as 000000. Default black.
in: query
name: fg
required: false
schema:
type: string
- description: Light colour, hex, or transparent. Default white.
in: query
name: bg
required: false
schema:
type: string
responses:
'200':
content:
image/png: {}
image/svg+xml: {}
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: UPI payment QR code
tags:
- QR codes and barcodes
components:
schemas:
Error:
properties:
error:
properties:
code:
type: string
message:
type: string
type: object
type: object
Envelope:
properties:
data:
description: 'The result: an object, or an array for list endpoints.'
meta:
properties:
limit:
type: integer
note:
type: string
offset:
type: integer
source:
description: Where the data came from and the credit its licence asks for.
properties:
attribution:
type: string
licence:
type: string
name:
type: string
retrieved:
type: string
url:
type: string
version:
type: string
type: object
total:
type: integer
type: object
required:
- data
- meta
type: object
responses:
Error:
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
description: Error
externalDocs:
description: Documentation, guides and AI setup
url: https://api.dharun.dev/docs