ljharb/qs

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A querystring parser and serializer with nesting support

Stars: 8.9k
Forks: 936
Open beginner issues: 0
Indexed issues: 51

Dominant language: JavaScript
License: BSD-3-Clause
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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51 open issues indexed

[Breaking] `parse`: text between and after balanced bracket groups is silently discarded, collapsing distinct keys onto one path Open

semver-major: breaking change

Difficulty 5/5 Over a week Newbie friendliness 35/100

ljharb/qs#619 · 1 comment · Opened Sep 10, 2026
allowDots corrupts a key when a bracket segment contains a literal dot Open

Difficulty 3/5 1-2 days Newbie friendliness 62/100

ljharb/qs#617 · Opened Sep 3, 2026
[Breaking] flip `strictMerge` default to `false` in v7 Open

semver-major: breaking change

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ljharb/qs#548 · Opened Feb 13, 2026
Dependency Dashboard Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ljharb/qs#528 · Opened Jun 26, 2025
Revised Performance Issue Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ljharb/qs#526 · 1 comment · Opened Jun 19, 2025
`allowEmptyArrays` option disrespects `arrayFormat` Open

question

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ljharb/qs#525 · 1 comment · Opened Jun 19, 2025
stringify, request supporting 'dot' as option for arrayFormat Open

feature request help wanted stringify

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ljharb/qs#516 · 3 comments · Opened Nov 1, 2024
square brackets confuse the parser Open

bug help wanted parse stringify

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#513 · 5 comments · Opened Oct 10, 2024
Exclude the value of a certain key, from getting encoded Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

ljharb/qs#491 · 11 comments · Opened Feb 5, 2024
qs parse is not letting app load on production when imported from index.tsx Open

needs user followup

Difficulty 3/5 1-2 days Newbie friendliness 25/100

ljharb/qs#475 · 1 comment · Opened Jun 13, 2023
qs.stringify(json) and qs.parse(json) Results are inconsistent with expectations Open

bug help wanted

Difficulty 3/5 1-2 days Newbie friendliness 25/100

ljharb/qs#471 · 4 comments · Opened May 5, 2023
arrayLimit not working on 2 dimensional arrays Open

needs user followup question

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ljharb/qs#450 · 1 comment · 2 reactions · Opened Aug 18, 2022
qs.parse omitting empty string keys Open

enhancement parse question stringify

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#432 · 6 comments · Opened Mar 3, 2022
Omit empty arrays from being stringified. Open

needs user followup

Difficulty 3/5 1-2 days Newbie friendliness 30/100

ljharb/qs#431 · 1 comment · Opened Feb 24, 2022
Array of Objects should always have indices Open

question stringify

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ljharb/qs#422 · 5 comments · 1 reaction · Opened Sep 20, 2021
Add support for stringify options sort: boolean Open

feature request stringify

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ljharb/qs#414 · 5 comments · Opened Jun 8, 2021
Is there an API such `qs.stringify(HTMLFormElement)`? Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

ljharb/qs#413 · 1 comment · Opened May 2, 2021
Size increased greatly in 6.10.0 due to getSideChannel Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

ljharb/qs#404 · 24 comments · 17 reactions · Opened Mar 24, 2021
Comma separator may not be encoded Open

stringify

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ljharb/qs#387 · 3 comments · 1 reaction · Opened Dec 15, 2020
Stringify with "arrayFormat: comma" encodes objects inside arrays as "[object Object]" Open

bug help wanted stringify

Difficulty 5/5 Over a week Newbie friendliness 30/100

ljharb/qs#378 · 30 comments · 6 reactions · Opened Aug 11, 2020
Stringifying using different arrayFormats, then parsed, create different things Open

bug help wanted parse question stringify

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ljharb/qs#345 · 16 comments · Opened Nov 15, 2019
Square brackets as object key Open

bug help wanted question stringify

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#343 · 12 comments · Opened Nov 5, 2019
Bug: parse->stringify->parse get different results Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#340 · 6 comments · Opened Oct 22, 2019
Stringify with `comma` format should add square brackets to parameter name to identity array with single value Open

enhancement help wanted stringify

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ljharb/qs#315 · 17 comments · 5 reactions · Opened Jun 4, 2019
Request to offer qs under an unmodified MIT licence Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ljharb/qs#306 · 16 comments · Opened Mar 28, 2019
Parsing single array param feature request Open

feature request parse question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#305 · 5 comments · 3 reactions · Opened Mar 25, 2019
Inconsistent behaviour of "arrayLimit" Open

parse question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#294 · 11 comments · 4 reactions · Opened Jan 9, 2019
How to flag skip empty sring Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 25/100

ljharb/qs#292 · 2 comments · Opened Jan 1, 2019
Arrays parsed incorrectly Open

feature request help wanted parse

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ljharb/qs#288 · 3 comments · 3 reactions · Opened Nov 27, 2018
Decoder function not being called Open

feature request help wanted parse

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ljharb/qs#284 · 3 comments · Opened Oct 1, 2018
ignoreQueryPrefix should be true by default Open

feature request parse semver-major: breaking change

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

ljharb/qs#283 · 6 comments · 10 reactions · Opened Sep 28, 2018
question about stringify array sorting Open

discussion feature request stringify

Difficulty 3/5 1-2 days Newbie friendliness 25/100

ljharb/qs#281 · 7 comments · Opened Sep 19, 2018
option to parse/unparse from array of pairs handling ordering and duplicate keys or key values like URLSearchParams Open

feature request help wanted parse stringify

Difficulty 5/5 Over a week Newbie friendliness 25/100

ljharb/qs#267 · 1 comment · Opened Jun 26, 2018
Add support for sets Open

discussion feature request stringify

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ljharb/qs#264 · 19 comments · Opened May 30, 2018
Bug Report: `qs.parse` for parsing a string contains both [] and [0]. Open

bug discussion question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ljharb/qs#262 · 4 comments · Opened May 13, 2018
Is there an option to prevent value of the same key being populating into an array? Open

feature request help wanted parse

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#259 · 10 comments · 6 reactions · Opened May 13, 2018
Add format: WHATWG Open

feature request

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#254 · 1 comment · Opened Apr 20, 2018
Array of objects not parsed correctly Open

help wanted parse question stringify

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ljharb/qs#252 · 14 comments · 3 reactions · Opened Mar 1, 2018
Parse results in multiple objects with the same key instead of one. Open

bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ljharb/qs#241 · 3 reactions · Opened Dec 20, 2017
Option to avoid percent-encoding sub-delims such as commas Open

enhancement help wanted stringify

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ljharb/qs#237 · 3 comments · 14 reactions · Opened Dec 4, 2017
Cannot use square brackets in key name Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ljharb/qs#235 · 7 comments · Opened Nov 8, 2017
Ensure options throw if present and incorrect Open

enhancement parse semver-major: breaking change stringify

Difficulty 5/5 Over a week Newbie friendliness 25/100

ljharb/qs#228 · Opened Sep 29, 2017
Feature request: option for deciding how to parse query without argument Open

feature request help wanted parse stringify

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ljharb/qs#223 · 6 comments · Opened Aug 18, 2017
Cannot parse array of objects using arrayFormat = 'brackets' Open

bug help wanted parse

Difficulty 5/5 Over a week Newbie friendliness 35/100

ljharb/qs#215 · 13 comments · 11 reactions · Opened Jun 13, 2017
Add the ability to enable strict RFC 3986 conformance for decoding as well as encoding Open

enhancement help wanted parse semver-minor: new features

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ljharb/qs#205 · 1 comment · 5 reactions · Opened Apr 10, 2017
Object with array containing object and scalars is not parsed correctly. Open

bug help wanted parse

ljharb/qs#197 · 7 comments · 1 assignee · Opened Feb 9, 2017
Different array parse behaviour of x-www-form-urlencoded between ExpressJS and rails Open

bug help wanted parse

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ljharb/qs#178 · 4 comments · 2 reactions · Opened Nov 11, 2016
RFC 3986 reserved characters missing Open

bug help wanted stringify

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

ljharb/qs#163 · 5 comments · Opened May 10, 2016
remove bower and component support Open

semver-major: breaking change

ljharb/qs#129 · 4 comments · 1 assignee · Opened Nov 3, 2015
Change `arrayLimit` default to 0 Open

feature request parse semver-major: breaking change

ljharb/qs#107 · 18 comments · 1 assignee · Opened Aug 7, 2015

ljharb/qs

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