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GrandPerspective VS Cert Decoder

Compare GrandPerspective VS Cert Decoder and see what are their differences

NinjaOne
NinjaOne (Formerly NinjaRMM) provides remote monitoring and management software that combines powerful functionality with a fast, modern UI. Easily remediate IT issues, automate common tasks, and support end-users with powerful IT management tools. sponsored
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Contents:
  1. » Base Details
  2. » Reviews
  3. » Alternatives

GrandPerspective logo GrandPerspective

GrandPerspective is a small utility application for Mac that graphically shows the disk usage...

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.
  • GrandPerspective Landing page
    Landing page //
    2023-09-28
  • 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.

GrandPerspective features and specs

  • Visualization
    GrandPerspective provides a visual representation of disk usage, allowing users to easily identify large files and folders at a glance through a treemap display.
  • Open Source
    The software is open source, meaning it is free to use and its source code is accessible for modification and improvement by the community.
  • User-Friendly
    The interface is simple and intuitive, making it easy for users of all levels of technical expertise to navigate and understand their disk usage.
  • Customizable
    Users can customize the treemap view, including color schemes and block sizes, to better suit their preferences and needs.

Possible disadvantages of GrandPerspective

  • Mac-Only
    GrandPerspective is available only for macOS, limiting its usage to Apple users and excluding those on Windows or Linux platforms.
  • Basic Features
    While it provides excellent visualization, GrandPerspective lacks advanced features that are available in some paid disk usage analyzers.
  • Performance Issues
    The application can struggle with performance when scanning particularly large disks or volumes, leading to longer loading times and potential crashes.
  • Occasional Bugs
    As with many open-source projects, users may encounter occasional bugs or glitches that can impact the user experience.

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 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

Category Popularity

0-100% (relative to GrandPerspective and Cert Decoder)

GrandPerspective

Cert Decoder

Disk Analyzer
100 100%
Disk Analyzer
0% 0
Decoding
0 0%
Decoding
100% 100
Hard Disk Usage
100 100%
Hard Disk Usage
0% 0
Monitoring Tools
0 0%
Monitoring Tools
100% 100

Questions & Answers

As answered by people managing GrandPerspective 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 GrandPerspective 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 GrandPerspective and Cert Decoder

GrandPerspective Reviews

DaisyDisk Alternatives: Free Disk Analyzers We've Actually Tested
If you've been on Mac for 10+ years, you probably know GrandPerspective. It was the original treemap visualizer, and it's completely free under GPL.
Source: dissectmac.com
What is Disk Inventory X and Its Top Alternatives
The main drawback of this tool is that it presents a lot of information which can be quite overwhelming to the user. It will not display an overview of your disks which contradicts its name. In summary, GrandPerspective can be an acceptable option for average users who are searching for a straightforward but simple tool. It can free up space on your drive quite quickly.
Source: www.imymac.com
What Is WinDirStat and Its Top Mac Alternatives
GrandPerspective’s menu/toolbar contains all of the options the app offers. You can configure its settings easily even if you are a newbie Mac user. You just need to choose a folder you want to analyze. The app will immediately give you reports needed.
Source: www.imymac.com

Cert Decoder Reviews

We have no reviews of Cert Decoder yet.
Be the first one to post

Social recommendations and mentions

Based on our record, GrandPerspective seems to be a lot more popular than Cert Decoder. While we know about 122 links to GrandPerspective, 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.

GrandPerspective mentions (122)

  • Don't let your Mac's storage fill up
    Don't pay $10 for what you can get for free: https://github.com/RobinNaumann/disko, https://grandperspectiv.sourceforge.net/, https://www.derlien.com/, etc… Otherwise, this is good advice. My cousin, who isn't particularly computer savvy thought that buying an Apple computer meant he wouldn't need computer expertise, but it stopped booting after running out of disk space during an update, and he didn't have the... - Source: Hacker News / 4 months ago
  • Anthropic Cowork feature creates 10GB VM bundle on macOS without warning
    I simply run GrandPerspective (GUI app, https://grandperspectiv.sourceforge.net/), or dust (terminal app, https://github.com/bootandy/dust), to give me an idea of what is going on with disk usage. - Source: Hacker News / 6 months ago
  • Anthropic Cowork feature creates 10GB VM bundle on macOS without warning
    I’d recommend GrandPerspective:[1] it’s really good at displaying this sort of thing, has been around for over two decades, and the developer has managed to keep it to <5MB which is perfect when you’re running very low on space. [1] https://grandperspectiv.sourceforge.net/. - Source: Hacker News / 6 months ago
  • Scan Your Linux Disk and Visualize It on Mac with GrandPerspective
    GrandPerspective is a useful disk space visualization tool for Mac. Have you ever wanted to scan files on Linux and visualize their disk usage with GrandPerspective? I created a Rust-based command-line tool called gpscan that scans directories on Linux and generates GrandPerspective-compatible files. - Source: dev.to / over 1 year ago
  • WinDirStat – Windows Directory Statistics
    For my MacOS friends, it might be a little outdated but I prefer GrandPerspective: https://grandperspectiv.sourceforge.net/. - Source: Hacker News / over 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 GrandPerspective and Cert Decoder, you can also consider the following products

DaisyDisk - DaisyDisk is a disk analyzer tool for OS X that visualizes hard disk usage and allows to free up hard disk space.

WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.

WizTree - WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.

TreeSize - TreeSize tells you where precious disk space has gone to.

Baobab Disk Usage Analyzer - Baobab Disk Usage Analyzer is one of the light-weight disk analyzers that offers you a chance to view and monitor the disk usage & folder structure without any hassle.

Filelight - Filelight is an application to visualize the disk usage on your computer.

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