Json Placeholder
Efficient testing is very important in the fast-paced world of web development. Jsonplaceholder is one of the most popular tools for simulating APIs. You're in the right place if you want to learn more about JSON Placeholder and how it can help you with your development work, especially when it comes to API testing.This guide has everything a developer needs to know, from fake endpoints to real-world examples. Jsonplaceholder is a reliable and easy-to-use tool for quickly prototyping and making strong API simulations, whether you're making your first app or working on a more advanced project.
What is JSON Placeholder?
JSON Placeholder is a free online REST service that lets developers test and prototype apps without having to set up a real backend. It gives them fake API endpoints to use. Jsonplaceholder is a tool made just for front-end and full-stack developers that lets them focus on building apps before they set up real databases or API servers. It works like real APIs, so you can get to endpoints like users, posts, comments, and more.
It functions like a mock server. Developers can fetch in JavaScript or use any HTTP client to pull data from a pre-defined, structured set of endpoints. This is why JSON Placeholder is considered one of the best free APIs for testing available online. Whether you're practicing CRUD operations or testing UI features, this tool has got you covered.
Why should you use JSON Placeholder for API Testing?
Testing is very important when you work with APIs. But what do you do if the backend isn't ready yet? That's where JSON Placeholder comes in. Developers can use dummy JSON APIs to test their apps by making fake API requests and responses to make sure they work as they should.
Important Advantages:- It’s a fake API but mimics real RESTful services.
- Great for pretending to do CRUD operations.
- Helps you understand what is API testing in a hands-on way.
- Has groups of sample JSON files, such as posts, comments, users, and more.
- Lets you play around with dummy json api setups.
This dummy data generator is often used by developers to test out new features or practice fetch in JavaScript before the real API goes live. This saves time and work while also giving developers a useful place to work.
Try it
Run this code here, in a console or from any site
fetch('https://www.placeholderimage.online/posts/1')
.then(response => response.json())
.then(json => console.log(json))
.catch(err => console.error('Error:', err));
JSON Placeholder Available Endpoints
There are many ready-to-use endpoints in JSON Placeholder. Here are a few of them:
Resources
JSONPlaceholder comes with a set of 6 common resources:
| Endpoint | Count |
|---|---|
| /posts | 100 posts |
| /comments | 90 comments |
| /albums | 85 albums |
| /photos | 100 photos |
| /todos | 95 todos |
| /users | 80 users |
These endpoints send back fake JSON data, but the structure is realistic enough to be used in any front-end project or testing environment. They also help new developers learn how to format JSON and deal with API responses in apps.
How to Use JSON Placeholder
You can use JSON Placeholder with a number of different tools and processes:
Routes
All HTTP methods are supported. You can use http for your requests.
Posts Routes
Posts Routes define the API endpoints used to create, read, update, and delete post resources in the application.
| Resource | Method | Endpoint |
|---|---|---|
| Post | GET | https://www.placeholderimage.online/posts |
| Post | GET | https://www.placeholderimage.online/posts/1 |
| Post | POST | https://www.placeholderimage.online/posts |
|
Description: Create a new post. Raw JSON Example:
{
"title": "New Post",
"body": "This is a new post"
}
|
||
| Post | PUT | https://www.placeholderimage.online/post/1 |
|
Description:Update a post by using ID Raw JSON Example:
{
"title": "New Post",
"body": "This is a new post"
}
|
||
| Post | DELETE | https://www.placeholderimage.online/posts/1 |
Comments Routes
Comments Routes provide the API endpoints to manage comment resources, allowing creation, retrieval, updating, and deletion of comments within the application.
| Resource | Method | Endpoint |
|---|---|---|
| Comments | GET | https://www.placeholderimage.online/comments |
| Comments | GET | https://www.placeholderimage.online/comments/1 |
| Comments | POST | https://www.placeholderimage.online/comments |
|
Description: Create a new Comment. Raw JSON Example:
{
"name": "John Smith",
"email": "john.smith1@example.com",
"body": "Great post! Very insightful."
}
|
||
| Comments | PUT | https://www.placeholderimage.online/comments/1 |
|
Description:Update a Comment by using ID Raw JSON Example:
{
"name": "John Smith",
"email": "john.smith1@example.com",
"body": "Great post! Very insightful."
}
|
||
| Commments | DELETE | https://www.placeholderimage.online/comments/1 |
Albums Routes
Albums Routes define the API endpoints used to create, read, update, and delete album resources in the application.
| Resource | Method | Endpoint |
|---|---|---|
| Albums | GET | https://www.placeholderimage.online/albums |
| Albums | GET | https://www.placeholderimage.online/albums/1 |
| Albums | POST | https://www.placeholderimage.online/albums |
|
Description: Create a new Album. Raw JSON Example:
{
"title": "Summer Vacation",
"artist": "John Doe",
"year": 2020
}
|
||
| Albums | PUT | https://www.placeholderimage.online/albums/1 |
|
Description:Update a Album by using ID Raw JSON Example:
{
"title": "Summer Vacation",
"artist": "John Doe",
"year": 2020
}
|
||
| Albums | DELETE | https://www.placeholderimage.online/albums/1 |
Photos Routes
Photos Routes handle the flow of image data, allowing users to upload, view, edit, and delete photos effortlessly within the app.
| Resource | Method | Endpoint |
|---|---|---|
| Photos | GET | https://www.placeholderimage.online/photos |
| Photos | GET | https://www.placeholderimage.online/photos/1 |
| Photos | POST | https://www.placeholderimage.online/photos |
|
Description: Create a new Photo. Raw JSON Example:
{
"title": "Snowy Peaks",
"url": "./images/json-data-images/pexels-freestockpro-1227513.jpg"
}
|
||
| Photos | PUT | https://www.placeholderimage.online/photos/1 |
|
Description:Update a Photo by using ID Raw JSON Example:
{
"title": "Snowy Peaks",
"url": "./images/json-data-images/pexels-freestockpro-1227513.jpg"
}
|
||
| Photos | DELETE | https://www.placeholderimage.online/photos/1 |
Todos Routes
Todos Routes act as the backbone of task management, enabling seamless creation, retrieval, modification, and removal of todo items within the application.
| Resource | Method | Endpoint |
|---|---|---|
| Todos | GET | https://www.placeholderimage.online/todos |
| Todos | GET | https://www.placeholderimage.online/todos/1 |
| Todos | POST | https://www.placeholderimage.online/todos |
|
Description: Create a new todo. Raw JSON Example:
{
"title": "Watch a tutorial #95",
"completed": false
}
|
||
| Todos | PUT | https://www.placeholderimage.online/todos/1 |
|
Description:Update a todo by using ID Raw JSON Example:
{
"title": "Watch a tutorial #95",
"completed": false
}
|
||
| Todos | DELETE | https://www.placeholderimage.online/todos/1 |
Users Routes
Users Routes manage the lifecycle of user accounts by enabling registration, profile updates, retrieval, and deletion within the application.
| Resource | Method | Endpoint |
|---|---|---|
| Users | GET | https://www.placeholderimage.online/users |
| Users | GET | https://www.placeholderimage.online/users/1 |
| Users | POST | https://www.placeholderimage.online/users |
|
Description: Create a new user. Raw JSON Example:
{
"name": "Adam Jones",
"email": "adam79@example.com",
"role": "admin"
}
|
||
| Users | PUT | https://www.placeholderimage.online/users/1 |
|
Description:Update a user by using ID Raw JSON Example:
{
"name": "Adam Jones",
"email": "adam79@example.com",
"role": "admin"
}
|
||
| User | DELETE | https://www.placeholderimage.online/users/1 |
API Testing Tools
You can plug JSON Placeholder endpoints into tools like Postman, Swagger, or Insomnia to run standard REST API tests.
Backend Integration
Even backend developers can use JSON Placeholder to simulate incoming API requests and test their server responses. This is especially useful when the frontend is not yet complete.
React/Vue/Angular Projects
In modern JavaScript frameworks, integrating JSON Placeholder for data fetching is seamless. This helps front-end developers validate their components using consistent fake json data.
Use Cases for JSON Placeholder
JSON Placeholder can be used for a wide range of development and testing scenarios:
- Learning how to test an API.
- Practicing front-end integrations.
- Understanding how real JSON databases work.
- Creating mockups and demos for clients.
- Debugging UI components with fake JSON data.
- Simulating user-generated content.
- Teaching others how to interact with RESTful APIs.
You can even use it to teach beginners about what is API testing, as the service requires no setup and returns consistent results. Its simplicity makes it ideal for coding bootcamps and online courses.
JSON Structure and Comments
All of JSON Placeholder's answers are well-structured and come in JSON format. Standard JSON doesn't let you add comments inside the code (called json comments), but descriptive key names and well-documented structures make it easy to understand. This platform is the best place to learn how to test API data integrity if you're looking into data formats.
You can use a JSON generator to make custom objects if you want to make your own datasets. When you need to structure responses in a more flexible way, these tools work great with JSON Placeholder.
How to Download a JSON File
You might want to keep sample JSON files on hand for later use or as documentation. You can easily open any endpoint in your browser with JSON Placeholder and then:
- Click the right mouse button and choose "Save As."
- Save the answer as a file with the .json extension.
You now have a copy of dummy JSON API data for testing. This is also helpful when you're getting ready for demonstrations that don't require an internet connection or when you want to share examples with your teammates.
Fake API for Learning and Testing
Jsonplaceholder is the best fake API for testing a new framework, trying out UI libraries, or writing tutorials. Thousands of developers use it for:
- Simulate submissions of forms.
- Make fake user data for test apps.
- Use search filters and dynamic tables.
- Use fake JSON data to test CRUD functionality.
- Practice how to handle relational data between endpoints, like posts and users.
You don't have to worry about setting up a real JSON database to do all of this. It's also very helpful for checking that pagination, search, and filtering work.
When to Stop Using JSON Placeholder
For beginners and simple prototypes, JSON Placeholder is great. But for production apps, you need more control. In the end, you'll need either a real backend or a custom dummy data generator. To do advanced testing, you need to mimic authentication, error handling, and edge cases.
You can use services like Mockaroo or JSON Generator to simulate JSON databases with a lot of customization options and larger datasets. You can also use real-time data sources to make application environments that are more like real life.
Advice for Developers Who Use JSON Placeholder
- Before using production APIs, always check your frontend logic with JSON Placeholder.
- Use the developer tools in your browser to look at the way data is returned and displayed.
- To make complex workflows, combine multiple endpoints.
- Practice putting it together with form inputs, data tables, and modals.
You can also get better at troubleshooting and debugging by learning how to download a JSON file and test its contents by hand.
FAQs About JSONPlaceholder
Try our JSON Placeholder API today and enhance your projects with realistic sample data for testing and development.