R Observatory: Metrics for qs2 version 0.3.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

qs2

0.3.1Package record

Efficient Serialization of R Objects

20packages dependsuggested by 21

277.1Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Travers ChingCRAN page ↗GitHub ↗Issues ↗

Streamlines and accelerates the process of saving and loading R objects, improving speed and compression compared to other methods. The package provides two compression formats: the 'qs2' format, which uses R serialization via the C API while optimizing compression and disk I/O, and the 'qdata' format, featuring custom serialization for slightly faster performance and better compression. Additionally, the 'qs2' format can be directly converted to the standard 'RDS' format, ensuring long-term compatibility with future versions of R.

Install

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

install.packages("qs2", 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("qsbase/qs2")

Development version from qsbase/qs2. 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-qs2

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-qs2

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-qs2

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 5.3 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK12 OK2026-04-25
ERROR10 OK, 3 NOTE, 1 ERROR2026-04-23
NOTE11 OK, 3 NOTE2026-04-22

Show 2 earlier changesHide 2 earlier changes

ERROR10 OK, 3 NOTE, 1 ERROR2026-04-18
NOTE11 OK, 3 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.1

READMEYes · 574 wordsVignettesYes · 1 · dynamicNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 32
Examples that run: 100%25 run in a plain check (1 of them under a condition)
Exported functions with examples: 77%
Documented parameters: 100%
Return-value docs: 90%
Help pages citing references: 9%

Vignettes (1)

qs2

How these are measured

Downloads

277.1K

CRAN downloads in the past year

Rank #627 · ~759/day · ~23.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

27K30 days

93.1K90 days

277.1K1 year

Compare downloads with other packages →

Also on4.8K r2u4 autocran12.8K conda_forge

How downloads are counted

Repository

qsbase/qs2 ↗Organization: qsbase

111Stars

4Forks

2Open issues

0Open PRs

0Releases

98Commits

3Commit identities

compressiondata-storagerserialization

98 commits · Last activity 2026-09-25 · +3.7% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 75%
Median days to close, 50 most recently updated closed issues: 3
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-10-19 · 412026-10-21 · 111

How these are measured

PracticesBeta

3 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/qsbase/qs2 on 2026-10-25.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Reproducibility and dev environment (1)

Makefile

How this is detected·Detection ruleset v4 (2026-10-20)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-06-03
Named in .Rbuildignore: .claude
Named in .gitignore: .claude
Commits: at least 3 crediting it in the message
Codexfirst seen 2026-06-03
Named in .Rbuildignore: .codex
Named in .gitignore: .codex

Models named in its commits

Claude Opus 52 commits · Aug 2026
Claude Sonnet 51 commit · Jul 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing qs2 adds 3 packages (3 with compiled code, 3.5 MB of source tarballs). Heaviest: Rcpp 1.8 MB, stringfish 1.0 MB, RcppParallel 744 KB.

Depends (1)

R >= 3.6.0

Imports (3)

Rcpp RcppParallel stringfish

LinkingTo (2)

Rcpp RcppParallel

Suggests (5)

knitr rmarkdown dplyr data.table stringi

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

20direct

77indirect

Imports 20

Suggested by 21

Show all 41 packagesHide all 41 packages

Depends, Imports or LinkingTo, most downloaded first

SimDesign rxode2 SpaDES.core multidplyr LAGOSNE jagstargets bdc espadon epizootic sourcoise fastbioclim SeuratExplorer simulateDCE poems tabs pizzarr healthyAddress starburst shinymrp spada

Suggests, most downloaded first

xfun Hmisc rio targets pins vcr scCustomize mlr3oml babelmixr2 reproducible PhenotypeR finnts nlmixr2lib zarr henna SerolyzeR bregr fastreg glow LISTO UKBAnalytica

How these are counted

Code & Tests

Datasets

People & History

People (7)

Travers Ching

Francesc Alted

Contributor, Copyright holder

Shuffling routines derived from Blosc library

Yann Collet

Contributor, Copyright holder

Yann Collet is the author of the bundled zstd

Skibinski Przemyslaw

Contributor, Copyright holder

Contributor/copyright holder of zstd bundled code

Reichardt Tino

Contributor, Copyright holder

Contributor/copyright holder of zstd bundled code

Mori Yuta

Contributor, Copyright holder

Contributor/copyright holder of zstd bundled code

Facebook, Inc.

Copyright holder

Facebook is the copyright holder of the bundled zstd code

Releases (11)

Pick two releases to compare their code metrics.

0.3.1Latest
record
2026-08-21 · current release · diff ↗
0.2.2
record
2026-06-03 · diff ↗
0.2.1
record
2026-05-04 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.2.0
record
2026-04-22 · diff ↗ ·
added 2 exports
generate_test_data, qs_cache
0.1.7
record
2026-01-20 · diff ↗ ·
added 2 exports
zstd_in, zstd_out
0.1.6
record
2025-11-21 · diff ↗ ·
added 2 exports
zstd_compress_file, zstd_decompress_file
R
R 4.5.0 released · 2025-04-11
0.1.5
record
2025-03-07 · diff ↗ ·
added 1 export
qopt
0.1.4
record
2024-12-12 · diff ↗
0.1.3
record
2024-12-02 · diff ↗
0.1.2
record
2024-11-24 · diff ↗ ·
added 14 exports
qs_serialize, qs_deserialize, qs_savem, qs_readm, qd_serialize, qd_deserialize, xxhash_raw, base85_decode, base85_encode, base91_decode, base91_encode, catquo, decode_source, encode_source
0.1.1
record
2024-09-16
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-09-16
Total releases: 11 / 2 yrs
License: GPL-3 OSI
Copyright: This package includes code from the 'zstd' library owned by Facebook, Inc. and created by Yann Collet; and code derived from the 'Blosc' library created and owned by Francesc Alted.
Minimum R: ≥ 3.6.0
Bundled data: 13 KB / 1 file
Download size: 1.0 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("qs2")

Format

Ching, T., Facebook, Inc., Alted, F., Collet, Y., Przemyslaw, S., Tino, R., & Yuta, M. (2026). qs2: Efficient Serialization of R Objects (Version 0.3.1) [Computer software]. https://doi.org/10.32614/CRAN.package.qs2

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for qs2 version 0.3.1 [Data set]. HJJB, LLC. Data release v2026-10-26. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-26, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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