Software Alternatives, Accelerators & Startups

Insomnia REST VS JSONLint

Compare Insomnia REST VS JSONLint and see what are their differences

Insomnia REST logo Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

JSONLint logo JSONLint

JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.
  • Insomnia REST Landing page
    Landing page //
    2023-10-05
  • JSONLint Landing page
    Landing page //
    2023-06-18

Insomnia REST features and specs

  • User-Friendly Interface
    Insomnia REST features a clean and intuitive user interface that makes it easy to create, send, and manage API requests without a steep learning curve.
  • Support for Multiple Protocols
    In addition to REST, Insomnia supports GraphQL and gRPC, making it versatile for developers working with different API protocols.
  • Environment Management
    Insomnia allows you to create and manage multiple environments, making it easier to switch between staging, development, and production settings.
  • Custom Plugins and Themes
    Insomnia supports custom plugins and themes, allowing users to extend its functionality and personalize the interface to suit their workflow.
  • Collaboration Features
    With Insomnia Teams, users can collaborate and share API requests, environments, and other resources, enhancing team productivity.
  • Cross-Platform Availability
    Insomnia is available on multiple platforms, including Windows, macOS, and Linux, providing flexibility for users on different operating systems.

Possible disadvantages of Insomnia REST

  • Resource Heavy
    Some users have reported that Insomnia can be resource-intensive, leading to potential performance issues on lower-end machines.
  • Limited Free Features
    While Insomnia offers a free tier, some of the more advanced features, such as team collaboration and sync capabilities, require a paid subscription.
  • Steeper Learning Curve for Advanced Features
    Although the basic functionalities are user-friendly, mastering the more advanced features might require a steeper learning curve.
  • Dependency on Electron
    Since Insomnia is built on Electron, it might consume more memory and disk space compared to native applications.
  • Complex Plugin System
    While the plugin system is powerful, it can be complex and challenging for users who are not familiar with JavaScript and Node.js.

JSONLint features and specs

  • User-Friendly Interface
    JSONLint offers a simple and intuitive web interface that makes it easy to validate JSON data without the need for advanced technical skills.
  • Error Highlighting
    The tool highlights exactly where the errors are in the JSON data, making it easier to identify and correct mistakes quickly.
  • Free to Use
    JSONLint is freely accessible to anyone with an internet connection, making it a cost-effective solution for validating JSON data.
  • JSON Formatter
    In addition to validating JSON, JSONLint also offers functionality to format and beautify JSON data, improving readability.
  • Quick Processing
    The tool processes JSON data quickly, providing almost instant feedback which is useful during development and debugging.

Possible disadvantages of JSONLint

  • Internet Connection Required
    JSONLint is a web-based tool, so it requires an active internet connection to function, which can be a limitation in offline environments.
  • Basic Features
    While JSONLint is excellent for simple validation and formatting, it lacks more advanced features like schema validation or integration with development environments.
  • No API
    JSONLint does not offer an API for programmatic access, limiting its use in automated workflows and larger development pipelines.
  • Ads on the Website
    The website includes advertisements, which can be distracting for users and might affect the user experience.
  • Limited Customization
    The tool does not offer much in terms of customization options for how errors are displayed or how JSON is formatted, which might not meet all user needs.

Insomnia REST videos

3 Reasons to use Insomnia REST Client in your Exploratory API Testing

More videos:

  • Tutorial - Insomnia REST Client Tutorial

JSONLint videos

No JSONLint videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to Insomnia REST and JSONLint)
API Tools
100 100%
0% 0
Development
0 0%
100% 100
Developer Tools
89 89%
11% 11
Image Optimisation
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Insomnia REST and JSONLint

Insomnia REST Reviews

Top 20 Open Source & Cloud Free Postman Alternatives (2024 Updated)
Product Introduction: Insomnia is a powerful open-source API client designed for simplicity and efficiency and works great as a postman alternative. It supports REST, GraphQL, and gRPC, making it versatile for various API types.
Source: medium.com
Best Postman Alternatives To Consider in 2025
It is a free, open-source platform that boasts a user-friendly interface and robust features like environment and collection management, code snippets, and test automation. Compared to Postman, Insomnia offers a lighter footprint and a more customizable workspace.
Postman Alternatives for API Testing and Monitoring
Insomnia is a user-friendly tool for API development and testing. Insomnia allows creating and sending HTTP and REST requests, like GET, POST, PUT, DELETE, and more. Users can view API responses, including status codes, headers, and body. This enables understanding how the application handles different response scenarios, for efficient debugging.
Top 10 HTTP Client and Web Debugging Proxy Tools (2023)
Insomnia REST is the best alternative for Postman. It has more than 350 open-source plugins, plus GraphQL built-in with multiple protocol support. Since GraphQL is an added value, you can fully automate the entire lifecycle of APIs, build and debug them efficiently and with ease.
15 Best Postman Alternatives for Automated API Testing [2022 Updated]
Insomnia by Kong enables you to deliver high-quality APIs through collaboration. This postman alternative also includes testing suites, which allow you to create functional tests and centralize APIs. With this platform’s streamlined API client, sending GraphQL, REST, and SOAP requests are simple. Defining variables such as authentication credentials allows you to manage...
Source: testsigma.com

JSONLint Reviews

We have no reviews of JSONLint yet.
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Social recommendations and mentions

JSONLint might be a bit more popular than Insomnia REST. We know about 135 links to it since March 2021 and only 129 links to Insomnia REST. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Insomnia REST mentions (129)

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JSONLint mentions (135)

  • How to Store Multi-Line Strings in JSON
    Or paste your JSON into JSONLint. Both tools immediately identify stray control characters. - Source: dev.to / 22 days ago
  • Chapter 1: setup, CSS, version control and SASS
    Our old pal VS Code will probably throw up some wiggly red lines if we do it wrong, so look out for them. If you're struggling to see why it doesn't work, try an online JSON Validator and see if it pushes you in the right direction. - Source: dev.to / 2 months ago
  • JSON Unescape: Understanding and Using It Effectively
    Online Tools: Platforms like JSONLint and FreeFormatter allow users to paste JSON data and unescape it with a click. - Source: dev.to / 4 months ago
  • Mastering JSON: How to Parse JSON Like a Pro
    Most APIs love JSON; it's their go-to language. Getting the hang of its structure can help keep your boat afloat in this sea of code. JSON mistakes can have you drifting off course, so it's good practice to validate your JSON using tools like this handy validator. It's like having a spell-check for your syntax, ensuring your JSON is shipshape before you set sail with tests. - Source: dev.to / 5 months ago
  • A little help with some server side work please
    You could, but just as easy to put it here - https://jsonlint.com/. Source: over 1 year ago
View more

What are some alternatives?

When comparing Insomnia REST and JSONLint, you can also consider the following products

Postman - The Collaboration Platform for API Development

JSONFormatter.org - Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON

Hoppscotch - Open source API development ecosystem

JSON Editor Online - View, edit and format JSON online

RapidAPI for Mac - Paw is a REST client for Mac.

JSON Formatter & Validator - The JSON Formatter was created to help with debugging.