Packagist · packagist:seld/jsonlint

seld/jsonlint active

JSON Linter

Latest stable version	1.12.1
Published	2026-06-12 11:32:29+00:00
Install	`composer require seld/jsonlint`
Required PHP version (composer.json)	`PHP ^5.3 \|\| ^7.0 \|\| ^8.0`
License	MIT
Advisories on latest version	none known
Last verified	2026-10-08 14:59:55 UTC
Sources	api.osv.dev, repo.packagist.org

Maintenance

Activity	active
Last stable release	2026-06-12 11:32:29 UTC · 118 days ago
Stable releases in the last 12 months	2
Published versions	29

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`1.12.1`	2026-06-12 11:32:29 UTC
`1.12.0`	2026-06-11 13:43:55 UTC
`1.11.0`	2024-07-11 14:55:45 UTC
`1.10.2`	2024-02-07 12:57:50 UTC
`1.10.1`	2023-12-18 13:03:25 UTC
`1.10.0`	2023-05-11 13:16:46 UTC
`1.9.0`	2022-04-01 13:37:23 UTC
`1.8.9`	2022-03-31 11:30:35 UTC
`1.8.3`	2020-11-11 09:19:24 UTC
`1.8.2`	2020-08-25 06:56:57 UTC
`1.8.1`	2020-08-13 09:07:59 UTC
`1.8.0`	2020-04-30 19:05:18 UTC
`1.7.2`	2019-10-24 14:27:39 UTC
`1.7.1`	2018-01-24 12:46:19 UTC
`1.7.0`	2018-01-03 12:13:57 UTC
`1.6.2`	2017-11-30 15:34:22 UTC
`1.6.1`	2017-06-18 15:11:04 UTC
`1.6.0`	2017-03-06 16:42:24 UTC
`1.5.0`	2016-11-14 17:59:58 UTC
`1.4.1`	2016-09-14 15:17:56 UTC

Showing the 20 most recent of 29 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`php 7.4`	`1.12.1`
`php 8.0`	`1.12.1`
`php 8.1`	`1.12.1`
`php 8.2`	`1.12.1`
`php 8.3`	`1.12.1`
`php 8.4`	`1.12.1`

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Frequently asked questions

What is the latest version of seld/jsonlint?

The latest stable version of seld/jsonlint is 1.12.1, published on 2026-06-12. Verified by Vigia on 2026-10-08.

How do I install the latest version of seld/jsonlint?

Run composer require seld/jsonlint. The latest stable version is 1.12.1 (verified 2026-10-08).

Is seld/jsonlint deprecated?

No. seld/jsonlint is not marked as deprecated in the registry.

Which PHP version does seld/jsonlint require?

seld/jsonlint 1.12.1 declares this requirement: PHP ^5.3 || ^7.0 || ^8.0.

Does seld/jsonlint 1.12.1 have known vulnerabilities?

No known advisories affect seld/jsonlint 1.12.1 according to the data Vigia checks.

Is seld/jsonlint still maintained?

seld/jsonlint published 2 stable releases in the last 12 months; the most recent was 118 days ago. Activity: active.

Observed changes

No changes observed yet since Vigia started tracking this package.

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