CSSViewer VS Requestly

Compare CSSViewer VS Requestly and see what are their differences

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Requestly

A Powerful API Mocking and Testing Tool

Landing page //
2023-09-30

Requestly //
2025-02-12
Rest Client //
2025-02-12
HTTP Interceptor //
2025-02-12
API Mocking //
2025-02-12
Requestly //
2025-02-12

Requestly is a modern and powerful companion for API Development and Testing. It is an open-source tool purpose-built to speed up and simplify API development workflow for developers and QAs. It is a combination of API Client and HTTP Interceptor that helps create and share API Contracts, testing APIs, and easily mock and integrate them into web and mobile apps.

CSSViewer

Website: chromewebstore.google.com
Pricing URL: -
$ Details: -
Platforms: -
Release Date: -

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Requestly

Website: requestly.com
Pricing URL: Official Requestly Pricing
$ Details: freemium
Platforms: Google Chrome Firefox Edge Safari Brave Opera Vivaldi Android Windows Linux Mac OSX MacOS
Release Date: 2021 January
Startup details
Country: United States
State: California
City: San Francisco
Founder(s): Sachin Jain, Sagar Soni, Sahil Gupta
Employees: 20 - 49

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CSSViewer features and specs

Ease of Use
CSSViewer offers a simple and intuitive interface that allows users to easily inspect CSS properties of web elements by hovering over them.
Quick Access
The extension provides quick access to CSS properties without the need to open the browser's developer tools, saving time for developers and designers.
Detailed Information
CSSViewer displays detailed CSS information, such as font, color, and box properties, which can be useful for debugging or learning CSS.
Lightweight Tool
The extension is lightweight and doesn't require significant system resources, making it a convenient tool for front-end developers.

Possible disadvantages of CSSViewer

Limited Functionality
CSSViewer is limited to viewing CSS properties and does not allow users to edit them directly or offer any advanced features available in full-featured developer tools.
Browser Compatibility
The extension is explicitly designed for Google Chrome, which means users of other browsers may need to look for alternatives.
No Updates or Support
Users have reported that CSSViewer lacks regular updates, which may lead to compatibility issues with newer versions of Chrome or fails to support newer CSS features.
Potential Security Risks
As with any third-party extension, users need to be cautious about permissions and potential security risks associated with installing and using such tools.

Requestly features and specs

Redirect URL
Block Network Requests
Modify Request & Response Header
Modify Response
Supercharge Selenium
Session Replay
Modify Query Params
Team Workspace
API Client
API Mocks
GraphQL Support
Zero Setup
Auto Capture Sessions
Network Logs
Console Logs

Analysis of Requestly

Overall verdict

Requestly is generally regarded as a good tool due to its comprehensive functionalities and ease of use. Its ability to seamlessly manage network requests makes it suitable for both beginners and experienced developers.

Why this product is good

Requestly is widely considered a valuable tool because it offers robust and flexible features for intercepting and modifying network requests. Developers and QA testers appreciate it for its ability to simulate and debug API calls efficiently. It is particularly useful for testing changes without altering the codebase and for working with web applications in development and production environments.

Recommended for

Developers looking to debug and test API endpoints.
Quality Assurance (QA) teams that require reliable testing tools for web applications.
Technical professionals who manage network traffic and need to modify or redirect requests effortlessly.
Anyone involved in web development who needs to simulate network conditions or test application behavior under different scenarios.

CSSViewer videos

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Requestly videos

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Category Popularity

0-100% (relative to CSSViewer and Requestly)

CSSViewer

Requestly

Design Tools

100 100%

Design Tools

0% 0

Developer Tools

19 19%

Developer Tools

81% 81

Development

100 100%

Development

0% 0

Testing

0 0%

Testing

100% 100

Questions & Answers

As answered by people managing CSSViewer and Requestly.

Who are some of the biggest customers of your product?

Requestly's answer:

Verizon
AT&T
Adobe
Salesforce
Telegraph
Intuit
Verizon

How would you describe the primary audience of your product?

Requestly's answer:

Front-end developers, QAs, PMs, Digital Marketers

What makes your product unique?

Requestly's answer:

Requestly is an open-source API development and testing tool that combines the capabilities of an API Client and HTTP Interceptor, making it a better alternative to Postman + Charles Proxy. It simplifies API mocking, request modification, and debugging with an intuitive no-code interface, enabling developers and QAs to test APIs efficiently.

User comments

Share your experience with using CSSViewer and Requestly. For example, how are they different and which one is better?

Reviews

These are some of the external sources and on-site user reviews we've used to compare CSSViewer and Requestly

CSSViewer Reviews

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Requestly Reviews

Comparing Charles Proxy, Fiddler, Wireshark, and Requestly

On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We have also clearly differentiated how Requestly differs from Wireshark and other web debugging tools like Proxyman, Modheader, and HTTP ToolKit separately.

Source: dev.to

Social recommendations and mentions

Based on our record, Requestly should be more popular than CSSViewer. It has been mentiond 35 times since March 2021. 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.

CSSViewer mentions (5)

7 Must Have Chrome Extensions for JavaScript Developers
The "CSS Viewer" Chrome extension is a handy tool for JavaScript developers seeking to inspect and analyze CSS styles on web pages. With a simple click on the extension's icon in the Chrome toolbar, it provides a user-friendly interface that allows you to hover over any element on a webpage and instantly view its corresponding CSS properties and values. - Source: dev.to / about 3 years ago
20 Top Best Chrome Extensions for Web Developers in 2022
CSS Viewer is a simple but very effective Chrome extension for web developers. As its name implies, this addon shows you the CSS properties of a given page wherever you hover your mouse. A small popup window appears showing you the CSS data that makes up the element you’re pointing at. - Source: dev.to / about 4 years ago
Top 10 Chrome Extensions for Web Developers in 2022
1 - CSSViewer : It allows to show the CSS properties of element on any webpage, you just hover your mouse on it . A small window appears showing you the CSS data . - Source: dev.to / over 4 years ago
21 Chrome Extension for web developer and designer
CSSViewer helps us to view CSS properties of an object in a web page in the most general way such as color, font, size, position... You just need to select this utility and hover your mouse over the object that they want. If you want, the CSS information will automatically appear. CSSViewer. - Source: dev.to / almost 5 years ago
Awesome Tools and Technologies I Use as a Developer!
CSSViewer - For viewing and inspecting CSS on a page. - Source: dev.to / over 5 years ago

Requestly mentions (35)

Why You Need a Local-First API Client (With Hands-On Example)
If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 8 months ago
How to use Cursor to Generate API Testcases in Requestly
That’s where automation changes the game. By pairing Cursor, an AI-powered coding assistant, with Requestly's local-first API testing and mocking platform, you can offload the grunt work of writing tests to AI while keeping execution secure and reproducible on your own system. In this article, we’ll walk through how to set up Cursor with Requestly, generate test cases automatically, and run them end-to-end so that... - Source: dev.to / 8 months ago
These 20 Awesome API Clients Will Change How You Work with APIs
Requestly is a versatile browser extension and web client used to intercept, mock, and debug APIs in real-time—perfect for frontend developers. - Source: dev.to / about 1 year ago
Best Tools for GraphQL Development in 2025
Requestly is a powerful tool for modifying GraphQL responses, intercepting requests, and debugging API interactions. It allows developers to tweak request bodies, capture GraphQL traffic, and share sessions for easier debugging and collaboration. - Source: dev.to / over 1 year ago
How Not to Use AI in Software Development
Learn more at https://requestly.com/. - Source: dev.to / over 1 year ago