loading...

20 Resources for generating fake and mock data

iainfreestone profile image Iain Freestone Updated on ・4 min read

Speed up development of your website or app using fake or mock data, everything from fake company logos and addresses to random user photos.

1. Faker JS

faker.js - generate massive amounts of fake data in the browser and node.js

GitHub logo Marak / faker.js

generate massive amounts of realistic fake data in Node.js and the browser

faker.js - generate massive amounts of fake data in the browser and node.js

Faker.js

Build Status Coverage Status

npm version

OpenCollective OpenCollective

Demo

https://rawgit.com/Marak/faker.js/master/examples/browser/index.html

Hosted API Microservice

http://faker.hook.io

  • Supports all Faker API Methods
  • Full-Featured Microservice
  • Hosted by hook.io
curl http://faker.hook.io?property=name.findName&locale=de

Usage

Browser

<script src = "faker.js" type = "text/javascript"></script&gt
<script&gt
  var randomName = faker.name.findName(); // Caitlyn Kerluke
  var randomEmail = faker.internet.email(); // Rusty@arne.info
  var randomCard = faker.helpers.createCard(); // random contact card containing many properties
</script&gt

Node.js

var faker = require('faker');

var randomName = faker.name.findName(); // Rowan Nikolaus
var randomEmail = faker.internet.email(); // Kassandra.Haley@erich.biz
var randomCard = faker.helpers.createCard(); // random contact card containing many properties

API

Faker.fake()

faker.js contains a super useful generator method Faker.fake for combining faker API methods using a mustache string format.

Example:

console.log(faker.fake("{{name.lastName}}, {{name.firstName}} {{name.suffix}}"));
// outputs: "Marks, Dean Sr."

This will interpolate the format string with the value of methods…


2. fony

fony is a simple command line tool that generates dummy JSON data from a provided template.

GitHub logo captainsafia / fony

A simple command line tool for generating fake data from a template string

fony

fony is a simple command line tool that generates dummy JSON data from a provided template.

The application utilizes Chance.js under the hood so any data type supported by Chance.js is supported by fony.

fony is intended to provide a simple solution to the most common data generation needs. You can use the command line to pipe output from fony to other tools and integrate it into your workflow.

Installation

npm install --global fony

Usage

  Usage: fony [options]
  Options
    -h, --help                 output usage information
    -V, --version              output the version number
    -t, --template <template>  JSON template for data to be generated
    -c, --count [count]        The number of elements to create, defaults to 1

Example

Mac and Linux folks can use single quotes around a double-quoted string of JSON like this:

fony -t '{"name": "name", "age": "age", "address": "address"}' -c 2

But Windows handles quotes on the command line differently, so…


3. Casual

GitHub logo boo1ean / casual

Fake data generator for javascript

Fake data generator Build Status

Installation

npm install casual

Usage

var casual = require('casual');
// Generate random sentence
// You don't need function call operator here
// because most of generators use properties mechanism
var sentence = casual.sentence;
// Generate random city name
var city = casual.city;
// Define custom generator
casual.define('point', function() {
    return {
        x: Math.random(),
        y: Math.random()
    };
});

// Generate random point
var point = casual.point;

// And so on..

Casual uses javascript properties for common generators so you don't need to use function call operator

Embedded generators

// Address
casual.country              // 'United Kingdom'
casual.city                 // 'New Ortiz chester'
casual.zip(digits = {5, 9}

4. Fake Data - A form filler you won't hate

Chrome Extension, Fake Data will help you insert random values in any form field. Generate random names, emails, addresses, phone numbers and many more types of data.

Alt Text


5. Fake Store API

fakeStoreApi is a free online REST API that you can use whenever you need Pseudo-real data for your e-commerce or shopping website without running any server-side code. It's awesome for teaching purposes, sample codes, tests, etc.

Alt Text


6. Chance

Chance - Random generator helper for JavaScript

GitHub logo chancejs / chancejs

Chance - Random generator helper for JavaScript

Chance

Chance Logo

Build Status GitHub license GitHub stars npm jsDelivr Hits npm Coverage Status awesomeness

Chance - Random generator helper for JavaScript

Homepage: http://chancejs.com

Many more details on http://chancejs.com but this single library can generate random numbers, characters, strings, names, addresses dice, and pretty much anything else.

It includes the basic building blocks for all these items and is built on top of a Mersenne Twister so it can generate these things with repeatability, if desired.

Usage

See the full docs for details on installation and usage.

Dependent tools


7. Mock

Mock.js is a simulation data generator to help the front-end to develop and prototype separate from the back-end progress and reduce some monotony particularly while writing automated tests.

GitHub logo nuysoft / Mock

A simulation data generator

Mock.js

Build Status

Mock.js is a simulation data generator to help the front-end to develop and prototype separate from the back-end progress and reduce some monotony particularly while writing automated tests.

The official site: http://mockjs.com

Features

  • Generate simulated data according to the data template
  • Provide request/response mocking for ajax requests
  • Generate simulated data according to HTML-based templates

This library is loosely inspired by Elijah Manor's post Mocking Introduction, mennovanslooten/mockJSON, appendto/jquery-mockjax and victorquinn/chancejs.

Questions?

If you have any questions, please feel free to ask through New Issue.

Reporting an Issue

Make sure the problem you're addressing is reproducible. Use http://jsbin.com/ or http://jsfiddle.net/ to provide a test page. Indicate what browsers the issue can be reproduced in. What version of Mock.js is the issue reproducible in. Is it reproducible after updating to the latest version?

License

Mock.js is available under the terms of the MIT License.





8. Generate Data

Ever needed custom formatted sample / test data, like, bad? Well, that's the idea of this script. It's a free, open source tool written in JavaScript, PHP and MySQL that lets you quickly generate large volumes of custom data in a variety of formats for use in testing software, populating databases, and... so on and so forth.

Alt Text


9. Fake Data Generator

Just a small open-source script to create fake data given a simple JSON model.

GitHub logo Cambalab / fake-data-generator

Just a small open-source script to create fake data given a simple JSON model.

Fake Data Generator

Just a small open-source script to create fake data given a simple JSON model.

Build Status Npm version License License

Introduction

This is a tiny package motivated by the need of generating certain amount of fake data to populate backend fixtures. We started implementing and editing a single .js file with specific characteristics of some backend models and the desired amount we wanted to generate until we ended up with something like this. We personally decided to use the output files in the API endpoints of a test server but you could use them any way you like, they're just .json files.

Built-In Dependencies

  • Faker: we use the Faker API to create fake data

Installation

There are a few ways you can get this library installed:

  • Install as a standalone forked repository
# clone our project or fork your own
git clone https://github.com/Cambalab/fake-data-generator.git
# install dependencies
npm install
  • Install as an npm…

10. Mocker Data Generator

A simplified way to generate massive mock data based on a schema, using the awesome fake/random data generators like (FakerJs, ChanceJs, CasualJs and RandExpJs), all in one tool to generate your fake data for testing.

GitHub logo danibram / mocker-data-generator

A simplified way to generate masive mock data based on a schema, using the awesome fake/random data generators like (FakerJs, ChanceJs, CasualJs and RandExpJs), all in one tool to generate your fake data for testing.

mocker-data-generator Tweet

Greenkeeper badge

npm versionGitHub license

Linux Build statusWindows Build statusCodecov coverageCodecov coverage

Dependency StatusDevDependency Status

GitHub licenseAwesome license

Support link

A simplified way to generate massive mock data based on a schema, using the awesome fake/random data generators like (FakerJs, ChanceJs, CasualJs and RandExpJs), all in one tool to generate your fake data for testing.

Now the library has been migrated 100% to typescript typing are included.

You can test online here: https://danibram.github.io/mocker-data-generator/

Getting started

Install the module with npm install mocker-data-generator

Import it

var mocker = require('mocker-data-generator').default (vainilla way)
or
import mocker from 'mocker-data-generator' (ES6 or Typescript way)

Then use it:

var user = {
    firstName: {
        faker: 'name.firstName'
    },
    lastName: {
        faker: 'name.lastName'
    },
    country: {
        faker: 'address.country'
    },
    createdAt: {
        faker: 'date.past'
    },
    username: {
        function: function() {
            return (
                this.object.lastName.substring(0, 5

11. Random User

A free, open-source API for generating random user data. Like Lorem Ipsum, but for people.

Alt Text


12. JSON Schema Faker

Use JSON Schema along with fake generators to provide consistent and meaningful fake data for your system.

GitHub logo json-schema-faker / json-schema-faker

JSON-Schema + fake data generators

JSON Schema Faker logo

Donate OpenCollective Build Status NPM version Bower version Coverage Status

Gitter Dependency Status devDependency Status

Inline docs Typedoc Known Vulnerabilities

Use JSON Schema along with fake generators to provide consistent and meaningful fake data for your system.

What's next?

Breaking-changes towards v0.5.x API:

  • deprecated — You will not longer be able to call jsf() and get a fully-dereferenced result. It will just generate given refs and inline ones, nothing else
    • jsf.generate() is the sync-version, with partial dereferencing through given refs, etc.
    • jsf.resolve() is the async-version, with full dereferencing, given refs are also supported.
  • deprecated — TypeScript sources are not longer used, however d.ts definitions will be updated on time.

Usage info from README.md was moved to docs/, read more.

Contributors

We are more than happy to welcome new contributors, our project is still being developed, but we need more feedback!

Please see our contribution guide to learn how.

We are looking for your help!

We have a gitter room for…


13. Fake Logos

A selection of fake but convincing company logos for real-looking test data.

Fake Logos

A selection of fake but convincing company logos for real-looking test data.

Usage

Download or link to the logos from the table below

The logos are accessible by:

  • {number}.png for tools wanting to pull in a random logo
  • Company name for direct access

The Logos

Color Logo Grayscale Logo Sizes
greens-food-suppliers greens-food-suppliers svg, small, medium, large
Color Logo Grayscale Logo Sizes
auto-speed auto-speed svg, small, medium, large
Color Logo Grayscale Logo Sizes
crofts-accountants crofts-accountants svg, small, medium, large
Color Logo Grayscale Logo Sizes
cheshire-county-hygiene-services cheshire-county-hygiene-services svg, small, medium, large
Color Logo Grayscale Logo Sizes
fast-banana fast-banana svg, small, medium, large
Color Logo Grayscale Logo Sizes
yoga-baby yoga-baby svg, small, medium, large
Color Logo Grayscale Logo Sizes
james-and-sons james-and-sons svg, small, medium, large
Color Logo Grayscale Logo Sizes
the-dance-studio the-dance-studio svg, small, medium, large
Color Logo Grayscale Logo Sizes
space-cube space-cube svg,

14. Mockaroo

Need some mock data to test your app? Mockaroo lets you generate up to 1,000 rows of realistic test data in CSV, JSON, SQL, and Excel formats.

Alt Text


15. JSON Placeholder

JSONPlaceholder is a simple fake REST API for testing and prototyping.

GitHub logo typicode / jsonplaceholder

A simple online fake REST API server

JSONPlaceholder

JSONPlaceholder is a simple fake REST API for testing and prototyping.

It's like an image placeholder but for web developers.

JSONPlaceholder is powered by JSON Server.

Why?

Most of the time when trying a new library, hacking a prototype or following a tutorial, I found myself in need of some data.

I didn't like the idea of using some public API because I had the feeling that I was spending more time registering a client and understanding a complex API than focusing on my task.

But I liked the idea of image placeholders for web designers. So I decided to code a little Express server inspired by that and here is JSONPlaceholder.

You can find it running here and are free to use it in your developments: https://jsonplaceholder.typicode.com.

I hope you will find it useful.

Features

  • No registration
  • Zero-config
  • Basic API
  • "Has many" relationships
  • Filters and nested…

16. Fake IMG

Don’t waste your time making dummy images for your mockup or wireframe. Fakeimg.pl is a little tool that generates images with an URL.

Alt Text


17. Lorem Picsum

The Lorem Ipsum for photos.

Alt Text


18. Fake Clients

Randomly generated client briefs

Alt Text


19. Acme Logos

Professional placeholder logos for your designs projects.

Alt Text


20. Lorem Ipsum

Of course it would not be complete without this classic!

Alt Text


Sign up to our free weekly newsletter and stay in the loop with the latest and greatest web development projects on GitHub at www.trendingprojects.com

If you enjoyed this article you can follow me on Twitter where I regularly post bite size tips relating to HTML, CSS and JavaScript.

Posted on by:

iainfreestone profile

Iain Freestone

@iainfreestone

A Web developer from Hampshire in the south of England.

Discussion

markdown guide
 

Very nice, thanks for curating this list.

 
 

If you're interested in faking a whole database, see my lib :)