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nomacs VS Cert Decoder

Compare nomacs VS Cert Decoder and see what are their differences

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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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nomacs logo nomacs

nomacs is a free, open source image viewer, which supports mu

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.
  • nomacs Landing page
    Landing page //
    2023-07-30
  • 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.

nomacs features and specs

  • Open Source
    Nomacs is free and open-source software, allowing users to modify and distribute it as they see fit, fostering an open community of contributors.
  • Multi-Platform Support
    The software is available on various operating systems including Windows, macOS, and Linux, making it accessible to a wider range of users.
  • Lightweight
    Nomacs is a lightweight application, which ensures it runs smoothly even on systems with limited resources.
  • Multi-Instance Feature
    Supports the ability to synchronize multiple instances, enabling side-by-side comparison of images across different monitors.
  • Wide Range of Formats
    Supports numerous image formats including RAW and PSD files, making it versatile for various types of image files.

Possible disadvantages of nomacs

  • Lacks Advanced Editing Tools
    Nomacs is primarily a viewer and does not offer advanced image editing tools, limiting its utility for users needing comprehensive editing features.
  • User Interface
    Some users may find the user interface to be less intuitive or visually appealing compared to other modern image viewer alternatives.
  • Limited Plugin Support
    The software has a limited selection of plugins, which could restrict functionality for users seeking extended features.
  • Performance on Large Files
    Can exhibit slow performance when handling very large image files or working in high-resolution modes, affecting overall efficiency.
  • Community and Support
    Being open-source, it may not offer the same level of customer support or extensive community resources as commercial image viewers.

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 nomacs

Overall verdict

  • Overall, Nomacs is considered a good choice for users looking for a free and efficient image viewer with a variety of useful features.

Why this product is good

  • Nomacs is an open-source image viewer that is lightweight, fast, and supports a wide range of image formats. It offers features like thumbnail preview, image manipulation tools, and batch processing, making it suitable for basic and advanced image viewing tasks.

Recommended for

    Nomacs is recommended for photographers, graphic designers, and casual users who need a reliable and feature-rich image viewer to manage and edit their image files.

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

nomacs videos

+ Add

nomacs: Image Viewer

More videos:

  • Review - Alternative to Photos for Windows 10 - Nomacs Image Lounge, like Windows Photo Viewer
  • Review - Nomacs Image Lounge : An Image Viewer For Linux Mint

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 nomacs and Cert Decoder)

nomacs

Cert Decoder

Image Editing
100 100%
Image Editing
0% 0
Decoding
0 0%
Decoding
100% 100
Digital Drawing And Painting
100 100%
Digital Drawing And Painting
0% 0
Monitoring Tools
0 0%
Monitoring Tools
100% 100

Questions & Answers

As answered by people managing nomacs 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 nomacs and Cert Decoder

nomacs Reviews

10 Best Photo Viewer For Windows 10 [2020]
Like other apps Nomacs also supports all basic image editing options out of the box, Nomacs is free to use open-source image viewer that supports multiple platforms.
Source: www.thetechbasket.com
13 Free Alternatives Image and Photo Organizer For Microsoft Windows 10
nomacs is a free image viewer for windows, linux, and mac systems, which is licensed under the GNU Public License v3. nomacs is small, fast and able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers. A synchronization of viewers running on the same computer or via LAN is possible. It allows to compare...
Source: www.geckoandfly.com
7 Best Photo Viewer Apps for Windows 10 in 2019
7 Best Photo Viewer Apps for Windows 10 in 2019What’s wrong with the default Microsoft Photos on Windows 10?1. IrfanView2. Nomacs3.HoneyView4.XnView5. FastStone Image Viewer6. Imagine
Source: thedigitalsushi.com
8 Best Photo Viewer for Windows 10 (2018)
Nomacs not only reads images in the zip archives but even previews MS office documents. You can also add notes to images to keep track of their origin. Nomacs includes image manipulation methods for adjusting brightness, contrast, saturation, hue, gamma, and exposure.
Source: techwiser.com

Cert Decoder Reviews

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

Based on our record, nomacs seems to be a lot more popular than Cert Decoder. While we know about 16 links to nomacs, 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.

nomacs mentions (16)

  • Even Microsoft Notepad is getting AI text editing now
    Be careful with Irfanview and XNView as these are free strictly for personal use (non commercial). An open-source alternative I've been using is: https://nomacs.org/. - Source: Hacker News / almost 2 years ago
  • IrfanView
    For Linux users looking for something similar to IrfanView, nomacs is the closest I found to IrfanView since I moved away from Windows: https://nomacs.org/. - Source: Hacker News / over 2 years ago
  • How can I export an image displaying in CMYK as RGB?
    How that cmyk profile is shown depends on the image viewing app too and if it [the app] can show that colour profile. Have you tried opening the image in a webbrowser, if it's updated and your monitor has the specs for it, try drag&drop the image to an open browser tab. As for img viewing app you can try nomacs. Source: about 3 years ago
  • Best photo manager? (Picasa alternative)
    I used nomacs. I use it because it's open source. Source: over 3 years ago
  • Can someone pls try and make this a livery group pls
    Have this: https://nomacs.org/ And good luck. Source: almost 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 nomacs and Cert Decoder, you can also consider the following products

IrfanView - IrfanView ... one of the most popular viewers worldwide.

XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!

ImageGlass - You can use Image to view your digital images and photos of many different formats.

FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.

qimgv - Simple image viewer written in qt. Supports webm playback.

JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.

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