Package · npm

ajv

npm · v8.20.0 · MIT

Another JSON Schema Validator

Developer Tools (primary) · Tentative

Tentative categories were assigned with moderate confidence (0.5 to 0.75): they are shown, but they do not count toward a category’s momentum. How categories work

Install

npm install ajv

Adoption

Downloads (30 days): 1.5B; Observeddownloads / 30 days
Popularity: Top 1% on npm; Derived100th percentile within npm
Dependents: 20.7K; Observedpackages that depend on it
Maintenance: 0.64; DerivedRelease cadence and recency, 0 to 1
Releases per year: 33; 359 versions over its life

Growth by period

Derived by Crest of Tech from two observations of npm’s own figure, a period apart. Nothing is stored or estimated: without an observation near the period’s start, the period is still collecting.

7 days: −9.6% · 7d; Derived−157.1M downloads / 30 days, OCT 17 → OCT 24
30 days: −1.2% · 30d; Derived−18.6M downloads / 30 days, SEP 24 → OCT 24
90 days: +5.7% · 90d; Derived+80.6M downloads / 30 days, JUL 27 → OCT 24
1 year: +119.8% · 1y; Derived+808.3M downloads / 30 days, OCT 27 → OCT 24

Adoption historydownloads / 30 days · 31 observations

Table of observations (31)

Day	downloads / 30 days	Dependents
OCT 24, 2026	1,483,024,794	20,687
OCT 23, 2026	1,408,016,013	Not observed
OCT 22, 2026	1,483,024,794	Not observed
OCT 21, 2026	1,465,467,953	Not observed
OCT 20, 2026	1,535,307,966	Not observed
OCT 19, 2026	1,576,616,306	Not observed
OCT 18, 2026	1,617,934,954	Not observed
OCT 17, 2026	1,640,087,246	Not observed
OCT 16, 2026	1,668,126,673	Not observed
OCT 15, 2026	1,662,314,020	Not observed
OCT 14, 2026	1,662,314,020	Not observed
OCT 13, 2026	1,732,715,761	Not observed
OCT 12, 2026	1,766,907,403	Not observed
OCT 11, 2026	1,726,330,501	Not observed
OCT 10, 2026	1,748,714,970	Not observed
OCT 9, 2026	1,778,210,272	Not observed
OCT 8, 2026	1,775,981,433	Not observed
OCT 7, 2026	1,694,032,989	Not observed
OCT 6, 2026	1,613,956,189	Not observed
OCT 5, 2026	1,605,141,369	20,069
OCT 4, 2026	1,605,141,369	Not observed
OCT 3, 2026	1,626,681,633	Not observed
OCT 2, 2026	1,586,095,687	Not observed
OCT 1, 2026	1,586,840,190	Not observed
SEP 30, 2026	1,573,679,481	Not observed
SEP 29, 2026	1,554,256,162	Not observed
SEP 28, 2026	1,504,637,714	Not observed
SEP 27, 2026	1,455,917,100	Not observed
SEP 26, 2026	1,475,453,216	Not observed
SEP 25, 2026	1,504,024,138	Not observed
SEP 24, 2026	1,501,575,905	Not observed

Facts from the registry

Latest version: v8.20.0; 359 versions
First published: MAY 29, 2015
Last release: APR 24, 2026; 6mo ago
Licence: MIT
Links: npm page (opens in a new tab); Homepage · ajv.js.org (opens in a new tab); Source · github.com (opens in a new tab)

Repository

In the Crest catalog

ajv-validator/ajv

The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)

Stars: 14.8K
Forks: 1K
Language: TypeScript
Last push: 47d ago
Last release: 6mo ago

Linked by the package’s own registry metadata.GitHub (opens in a new tab)

Dependencies latest version · v8.20.0

Runtime 4

fast-deep-equal^3.1.3
fast-uri^3.0.1
json-schema-traverse^1.0.0
require-from-string^2.0.2

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