qrencoder

0.1.0

Quick Response Code (QR Code) / Matrix Barcode Creator

2packages depend

10.8Kdownloads / year

0.0%test coverage

9/13checks pass

Overview

About

Maintained by Bob RudisFirst published 2016-09-161 releasesCRAN page ↗GitHub ↗

Quick Response codes (QR codes) are a type of matrix bar code and can be used to authenticate transactions, provide access to multi-factor authentication services and enable general data transfer in an image. QR codes use four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to efficiently store data. Matrix barcode generation is performed efficiently in C via the included 'libqrencoder' library created by Kentaro Fukuchi.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("qrencoder", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("hrbrmstr/qrencoder")

Development version from hrbrmstr/qrencoder. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-qrencoder

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-qrencoder

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-qrencoder

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

4NOTE9OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc

Slowest check: 8.1 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.08

0.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-04-22
7 OK · 7 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
6 OK · 7 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
7 OK · 7 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 188 wordsVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 0%
References docs: 0%

Downloads

10.8K

CRAN downloads in the past year

Rank #8,459 · ~30/day · ~902/mo

Releases R versions

Daily download trend is not available in this view yet.

43830 days

1.2K90 days

10.8K1 year

Compare downloads with other packages →

Also on432 r2u1 autocran

Repository

GitHub ↗ hrbrmstr/qrencoder

62Stars

7Forks

5Open issues

0Open PRs

0Releases

25Commits

3Contributors

rrstatsqrcodeqrcode-generator

25 commits · Last activity 2018-11-11 · 0% stars, 30d

Stars over time

2024-07-05 · 602026-07-07 · 62

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/hrbrmstr/qrencoder on 2026-07-31.

Continuous integration (1)

Travis CI

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (2)

R >= 3.1.0raster

Imports (3)

Rcpp base64enc png

LinkingTo (1)

Rcpp

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

beautils qrlabelr

Code & Tests

People & History

People (2)

Maintainer (1)

Bob Rudis

Author, Maintainer

Authors (1)

Bob Rudis

Author, Maintainer

Contributors (1)

Kentaro Fukuchi

Contributor

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.1.0Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2016-09-16
Total releases: 1 / 10 yrs
License: GPL-2 OSI
Minimum R: ≥ 3.1.0
Download size: 35 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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