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Portmap.io VS Cert Decoder

Compare Portmap.io VS Cert Decoder and see what are their differences

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Portmap.io logo Portmap.io

Expose your local PC to Internet from behind firewall and without real IP address

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.
  • Portmap.io Landing page
    Landing page //
    2023-06-24
  • 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.

Portmap.io features and specs

  • Ease of Use
    Portmap.io offers a simple interface that makes it easy for users to set up port forwarding without needing advanced networking knowledge.
  • Flexibility
    The service supports multiple tunneling protocols including OpenVPN and SSH, providing versatility depending on user needs.
  • Cost-effective
    Portmap.io offers both free and paid plans, allowing users to choose a service level that fits their budget while still providing essential features.
  • Compatibility
    The service is compatible with various operating systems, making it accessible to a wide range of users.
  • No Need for Static IP
    Users can access their internal services over the internet without requiring a static IP address.

Possible disadvantages of Portmap.io

  • Limited Bandwidth
    The free plan has bandwidth limitations that may not be suitable for high-traffic applications.
  • Security Concerns
    Using port forwarding services can introduce security risks if not properly configured or if the service has vulnerabilities.
  • Reliability
    As with many online services, there can be downtime or maintenance periods which may affect service availability.
  • Dependency on Third-party Service
    Relying on an external service for port forwarding can be a disadvantage if the service experiences issues or discontinues.
  • Configuration Limits
    Advanced users might find the configuration options somewhat limited compared to setting up port forwarding manually on their own networks.

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 Portmap.io

Overall verdict

  • Portmap.io is generally considered a good tool for its ease of use, reliability, and features such as SSL support and a user-friendly interface. However, users should be aware of potential security risks when exposing local services to the public internet.

Why this product is good

  • Portmap.io is a popular choice for users looking to expose local servers to the internet without dealing with complex network configurations like port forwarding. It provides a straightforward solution for developers wanting to test, share, or access services remotely.

Recommended for

    Developers, system administrators, and hobbyists who need to access local services remotely or those testing webhooks and other remote internet applications.

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

Portmap.io videos

+ Add

Port Forward without Router using portmap.io

More videos:

  • Review - portmap.io portforwarding with Android FUD RAT live practical hindi
  • Review - NJRAT LimeRAT Portmap.io - free port forwarding solution NJRAT LimeRAT

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 Portmap.io and Cert Decoder)

Portmap.io

Cert Decoder

Localhost Tools
100 100%
Localhost Tools
0% 0
Decoding
0 0%
Decoding
100% 100
Webhooks
100 100%
Webhooks
0% 0
Monitoring Tools
0 0%
Monitoring Tools
100% 100

Questions & Answers

As answered by people managing Portmap.io 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

Share your experience with using Portmap.io and Cert Decoder. For example, how are they different and which one is better?
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Reviews

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

Portmap.io Reviews

  1. Ihor
    WORST SERVICE i ever see

    Did not worked at all. No VPN connections, NO ssh connections... Did not work at all. No option to connect. Not working in my country and "No refund" :(

    I got fooled with such fake service. NOT RECOMMENDING. use ngrok instead. Better for 800% that this

    Competitors: Simple Port Forwarding
    Cons:    Design|Price|Pricing|Ssh|Not working|Fake

Cert Decoder Reviews

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

Based on our record, Portmap.io seems to be a lot more popular than Cert Decoder. While we know about 34 links to Portmap.io, 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.

Portmap.io mentions (34)

  • How do hackers hide their ip in reverse shells?
    I once used portmap.io for reverse shell in ethical hacking classes. Source: about 3 years ago
  • OpenVPNnot working and i dont know what to do
    So I use portmap.io for OpenVPN like I saw in tutorials but I found out it is not working because my ip didn't change when I looked up what my ip was. Source: about 3 years ago
  • SSH into a personal computer in Jio Network using public IP
    I have a personal computer in the Jio Network at my home and I want to access it using ssh from another network. But in order to port forward my router I am stuck since Jio uses CGNAT if I am not mistaken and there is no use if I portforward. What other solutions do I have? I tried using portmap.io but I couldnt configure ssh in it (I dont want to use openVPN) so what other options do I have? Source: almost 4 years ago
  • port forwarding/tunneling
    I'm basically looking for a free version of https://portmap.io/ -- they will do this, but custom domains are $4/month. Source: about 4 years ago
  • port triggering to replace port forwarding
    I would recommend trying again with port forwarding, or some other solution like this: https://portmap.io/ which is a kind of reverse tunnel made for situations like yours. That site has a free tier which allows a single forward. Source: about 4 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 Portmap.io and Cert Decoder, you can also consider the following products

ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

sish - An open source serveo/ngrok alternative. HTTP(S)/WS(S)/TCP Tunnels to localhost using only SSH.

localhost.run - Instantly share your localhost environment!

Pagekite - Bring your localhost servers on-line.

LocalXpose - Your network without the IT work. Radically simple, always-on tunneling service for mission-critical applications.

Vercel - Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.

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