Software Alternatives & Startups

HTTP Toolkit VS Cert Decoder

Compare HTTP Toolkit VS Cert Decoder and see what are their differences

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HTTP Toolkit logo HTTP Toolkit

Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

Cert Decoder logo Cert Decoder

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.
  • HTTP Toolkit
    Image date //
    2024-11-03
  • Cert Decoder
    Image date //
    2025-03-22

Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.

HTTP Toolkit

$ Details
freemium €7 / Monthly (for a Pro subscription)
Platforms
Windows Linux Mac OSX Cross Platform GraphQL API JavaScript Android iOS Docker
Startup details
Country
Spain
State
Barcelona
City
Barcelona
Founder(s)
Tim Perry
Employees
1 - 9

HTTP Toolkit features and specs

  • Ease of Use
    HTTP Toolkit provides a user-friendly interface that makes it simple for developers to intercept, view, and debug HTTP traffic without needing extensive setup or configuration.
  • Cross-Platform Compatibility
    HTTP Toolkit is available on multiple platforms (Windows, macOS, and Linux), ensuring a broad usability across different operating systems.
  • Open Source
    Being open-source, HTTP Toolkit allows for community contributions and transparency. Developers can inspect, modify, and enhance the tool to better suit their needs.
  • Comprehensive Debugging Features
    It allows for detailed analysis of HTTP requests and responses, including the ability to edit live traffic, simulating various networking conditions, and automatically retrying requests.
  • Integrations and Plugins
    HTTP Toolkit supports a range of common integrations and plugins for popular tools and services, which helps extend its functionality seamlessly.
  • SSL & HTTPS Support
    Has robust support for SSL and HTTPS, allowing for the interception and debugging of secure traffic in a straightforward manner.

Possible disadvantages of HTTP Toolkit

  • Resource Intensive
    Some users may find that the application is demanding on system resources, potentially slowing down their other development tasks.
  • Learning Curve
    Despite its ease of use, there is still a learning curve for new users to fully leverage the advanced features of HTTP Toolkit, which might be daunting for beginners.
  • Freemium Model
    While HTTP Toolkit is free to use with basic features, advanced capabilities require a paid subscription, which may not be suitable for all users or small teams with limited budgets.
  • Limited Protocols
    Primarily focused on HTTP and HTTPS, the tool may not be as useful for developers working with other network protocols.
  • Community and Support
    Although it is open-source, the community support and official documentation may not be as comprehensive as commercial alternatives, potentially leaving users to troubleshoot more on their own.

Cert Decoder features and specs

  • User-Friendly Interface
    Cert Decoder is designed with a simple and intuitive interface that makes it easy for users to navigate and use the tool without requiring extensive technical knowledge.
  • Comprehensive Analysis
    The tool provides detailed analyses of certificates, including information about validity, issuer, encryption algorithms, and more, helping users understand their security certificates thoroughly.
  • Free to Use
    Cert Decoder offers its services free of charge, making it accessible for individuals and organizations without budget constraints.
  • Quick Processing
    The tool processes certificate information rapidly, providing almost instant results for users, which is crucial for time-sensitive tasks.

Possible disadvantages of Cert Decoder

  • Limited Advanced Features
    Compared to some paid alternatives, Cert Decoder might lack advanced features that are necessary for more complex certificate management and diagnostics.
  • Reliance on Internet Access
    Users need an active internet connection to utilize the tool, which can be a limitation in areas with unreliable internet service.
  • Privacy Concerns
    While using an online service to decode certificates, there can always be privacy concerns regarding sensitive data being uploaded to a third-party server.
  • No Offline Mode
    Cert Decoder does not offer an offline mode, which could be a drawback for users who require functionality without constant internet availability.

Analysis of HTTP Toolkit

Overall verdict

  • HTTP Toolkit is highly regarded in the developer community for its combination of ease of use and advanced debugging capabilities, making it an excellent choice for developers looking to understand and fine-tune their HTTP(S) traffic.

Why this product is good

  • HTTP Toolkit is praised for its user-friendly interface and robust features designed to intercept, view, and debug HTTP(S) traffic. It offers automatic setup for many platforms, which makes it accessible even to those with limited experience in network debugging. Additionally, it supports a wide range of platforms including Windows, macOS, Linux, and Android, making it a versatile tool for developers working on different systems. The tool also provides powerful inspection capabilities, allowing users to explore the full context of each HTTP request or response, including headers, cookies, and bodies.

Recommended for

  • Developers needing to debug and modify HTTP/S requests and responses
  • QA professionals seeking a reliable way to test API interactions
  • Individuals or teams working on full-stack development who need to analyze backend and frontend interactions
  • Students learning about networking who require tools to visualize and understand HTTP(S) traffic

Analysis of Cert Decoder

Overall verdict

  • Cert Decoder appears to be a free online tool for decoding and inspecting SSL/TLS certificates, CSRs, and related cryptographic data, making it useful for quick, no-install certificate analysis, though it should be used with awareness of general web tool privacy considerations when handling sensitive certificate data.

Why this product is good

  • Provides quick, browser-based decoding of certificates without needing to install software
  • Useful for troubleshooting SSL/TLS certificate issues on the fly
  • Simple interface aimed at both technical and semi-technical users
  • No cost to use for basic certificate decoding tasks

Recommended for

  • System administrators needing to quickly verify certificate details
  • Developers debugging SSL/TLS configuration issues
  • IT support staff troubleshooting website certificate errors
  • Students or professionals learning about certificate structure and encoding

HTTP Toolkit videos

HTTP Toolkit Demo

Cert Decoder videos

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

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Category Popularity

0-100% (relative to HTTP Toolkit and Cert Decoder)
Developer Tools
100 100%
0% 0
Decoding
0 0%
100% 100
Software Development
100 100%
0% 0
Monitoring Tools
0 0%
100% 100

Questions & Answers

As answered by people managing HTTP Toolkit and Cert Decoder.

What's the story behind your product?

Cert Decoder's answer:

I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.

Which are the primary technologies used for building your product?

Cert Decoder's answer:

certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server

How would you describe the primary audience of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

Why should a person choose your product over its competitors?

Cert Decoder's answer:

Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.

Who are some of the biggest customers of your product?

Cert Decoder's answer:

certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare HTTP Toolkit and Cert Decoder

HTTP Toolkit Reviews

Top 10 HTTP Client and Web Debugging Proxy Tools (2023)
HTTP ToolKit is an open-source tool for debugging. It works with the three main OS and has good features attached to it. Just with a click, it can intercept and view all your HTTP(s). Compared to others, it targets interception of HTTP and HTTPS automatically from clients, with the inclusion of Android applications and browsers, desktop browsers, backend, and scripting...
12 HTTP Client and Web Debugging Proxy Tools
HTTP Toolkit supports standard HTTP debugger features including breakpoints & rewriting HTTP(S) traffic, filtering and searching collected traffic, and highlighting & autoformatting for many popular request & response body formats. Core features to intercept, inspect & rewrite HTTP(S) are all available for free, while some advanced premium features like import/export and...
Source: geekflare.com
Best Postman Alternatives: Fastest API Testing Tools
For debugging, testing, and building APIs with HTTPs, you can effectively use HTTP Toolkit because it is built for this purpose. Also, this is the reason why it is known as a good Postman alternative for various purposes.
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

Cert Decoder Reviews

We have no reviews of Cert Decoder yet.
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Social recommendations and mentions

Based on our record, HTTP Toolkit seems to be a lot more popular than Cert Decoder. While we know about 30 links to HTTP Toolkit, we've tracked only 1 mention of Cert Decoder. 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.

HTTP Toolkit mentions (30)

  • GrapheneOS – Break Free from Android and iOS
    I can add certificates on my unrooted android. That how HTTPToolkit [0] works, it only requires adb, which (thankfully) doesn't trip banking apps. Banking apps can (and do iirc) pin certificates, so a rooted phone adds no risk whatsoever. Also in my experience a rooted phone experience is by far more secure than the OEM androids. Security is supposed to assess risk objectively, yet "running on a Xiaomi phone with... - Source: Hacker News / 7 months ago
  • Charles Proxy
    For my rather simple needs I've been using https://httptoolkit.com free edition, I like that it launches a independent Firefox window on its own for the intercepting so I don't have to touch my working browser or deal with configuring a proxy anywhere. - Source: Hacker News / 9 months ago
  • Charles Proxy
    This one is truly a gem: https://httptoolkit.com It even bypasses SSL pinning on Android using 1 click. - Source: Hacker News / 9 months ago
  • APKLab: Android Reverse-Engineering Workbench for VS Code
    Https://httptoolkit.com also worth a look if you're interested in this space: has some neat automated setup for Android MITM that can be much simpler _and_ more effective than the manual config route (with automated Frida setup on rooted devices, so it handles unpinning too!). More UI & less CLI focused, so depends which way your preferences go there. - Source: Hacker News / about 1 year ago
  • Launch HN: Integuru (YC W24): Reverse-Engineer Internal APIs Using LLMs
    Just setup httptoolkit [0], it just works. [0] - https://httptoolkit.com/. - Source: Hacker News / almost 2 years ago
View more

Cert Decoder mentions (1)

  • Banana.dog back from the dead
    Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago

What are some alternatives?

When comparing HTTP Toolkit and Cert Decoder, you can also consider the following products

Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy

mitmproxy - mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.

Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS

Fiddler - Fiddler is a debugging program for websites.

Weer - A HTTP protocol debugger with Chrome DevTools frontend interface