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Create mock and sample JSON using a powerful template syntax

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Collection of free online developer tools for JSON, XML, CSS, and more

Which is more popular?
Based on our record, JSON Generator seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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JSO
JSON Generator
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| Website | json-generator.com | devtoollab.com |
| Pricing | — | |
| Company | — | Startup from India · 2025 |
| Listed in |
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No description of JSON Generator yet.
DevToolLab is a developer-centric platform crafted to simplify and streamline the everyday tasks of software engineers, web developers, and tech enthusiasts. Our goal is to provide a seamless experience by combining essential development tools and high-quality technical content—all in one place....
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Recommendations tracked on public social media and blogs since March 2021.

JSON Generator: also generates mock data, but for JSON specifically. It's a bit more complex, but it allows for tailor-made results. - Source: dev.to / almost 3 years ago
Is there a generator for all the JSON generators out there? https://json-generator.com/. - Source: Hacker News / almost 3 years ago
So I generated a random JSON file and tried parsing it. It doesn’t error, but whenever I do a println(root.Object().Value().String()), I get a panic: wrong type. If I do a println(root.Object().Present()), it prints false. So seems like... Source: over 3 years ago
Tracking DevToolLab since Apr 2025.
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ExtendsClass's JSON generator allows to generate random JSON data from a template.
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JSON Online Viewer is a fast JSON tree visualizer.
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