JavaScript documentation, offline on Android

The JavaScript language reference, built from MDN Web Docs: every built-in object, method and keyword, plus the guides. Download it once and look up Array.prototype.flatMap or Promise.all with no signal.

Get it on Google Play See example entries

What is in the JavaScript docset

The JavaScript docset is generated from MDN Web Docs, the reference most web developers already use. Built-in objects (Array, Map, Promise, Intl…) are listed with their full prototype paths, statements and keywords have their own entries, and the guides are included too.

It is a big download, about 327 MB compressed, because the pages carry MDN's examples and related web material. Use Wi-Fi: DevDocs has a "Download over Wi-Fi only" setting, and downloads resume if the connection drops.

Version: Current feed build
Entries: 9,447
Download: 327 MB
Source: Official docset feed (from MDN Web Docs)

Entry types: Property 3,641 · Method 3,094 · Class 1,125 · Guide 694 · Event 461 · Constructor 313 · Keyword 107. Figures from the docset's own index, checked on 27 October 2026; versions change as the feeds update. Download size is the compressed archive.

Illustration with real entries from the JavaScript docset.

Example entries you can search offline

A few real entries from the JavaScript docset's index, as they appear in search results:

Entry	Type
Array.prototype.flatMap	Method
Array.prototype.reduce	Method
Promise.all	Method
Object.entries	Method
String.prototype.replaceAll	Method
Intl.DateTimeFormat	Method
JSON.parse	Method
Map	Class
Window.structuredClone()	Method
async function	Keyword

How to get the JavaScript documentation offline

Install DevDocs from Google Play. It is free and needs no account.
Open the Store tab and search for JavaScript.
Tap Download. The docset downloads in the background (327 MB compressed) and is indexed on your phone.
Open Search or the docset in your Library. From now on it works with no connection.

Tips for searching the JavaScript docs

Type the prototype path for instance methods, for example Array.prototype.at; static methods are just Object.groupBy style.
Keywords such as async function, let or class are entries of type Keyword.
Pair it with the TypeScript, NodeJS and HTML/CSS docsets so one search covers the whole front-end stack.

Related docsets

Also in the DevDocs Store: TypeScript, NodeJS, HTML, CSS, HTTP, jQuery. Install any of them and one search covers them all. See also: React documentation offline.

JavaScript docs offline: questions

Where does the JavaScript docset come from?

It is built from MDN Web Docs and published through the official docset feed. DevDocs downloads it and indexes it on your phone.

Why is the download so large?

About 327 MB compressed, because it includes MDN's pages with their examples and related web material. After that it costs no data at all.

Is Node.js included?

Node.js is a separate docset (NodeJS) in the Store, about 11 MB. Install both and search covers both.

Get the JavaScript docs on your phone

DevDocs is free, has no ads and needs no account.

Get it on Google Play