
Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

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Which is more popular?
Based on our record, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | certdecoder.com | slidemaker.app |
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In their own words, as submitted to SaaSHub.


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.
Creating presentations shouldn’t feel like a full-time job. SlideMaker.app was built around a simple idea — turning your thoughts into beautiful, professional slides in minutes instead of hours. With the help of advanced AI, the platform understands your topic, organizes the content, and designs...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Cert Decoder and SlideMaker App.
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.
SlideMaker App's answer:
Creating presentations shouldn’t feel like a full-time job. SlideMaker.app was built around a simple idea, turning your thoughts into beautiful, professional slides in minutes instead of hours.
With the help of advanced AI, the platform understands your topic, organizes the content, and designs each slide automatically. It adds visuals, charts, and layouts that make sense, all while keeping things clean and professional. The goal is to let you focus on your message, not formatting.
SlideMaker has quickly become a favorite tool for students, educators, business professionals, and teams in government and private organizations around the world. It’s used in classrooms, company meetings, and research presentations by people who just want to get great results without design headaches.
Unlike most tools, SlideMaker is completely free, there are no credit systems, paywalls, or hidden limits. It’s made for anyone who wants to create something that looks good and works anywhere, from PowerPoint to Google Slides.
Every feature is built to save time and reduce stress, whether that means generating slides from a few lines of text, exporting to multiple formats, or refining layouts with smart templates.
SlideMaker isn’t just another app; it’s a step toward making presentation design effortless and accessible to everyone.
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
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
SlideMaker App's answer:
Students, Educational Institutions, Research teams, Business professionals, Brands, Small scale and large scale businesses.
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.
SlideMaker App's answer:
Apart from being free, it is intuitive and easy to use. Whether on mobile or desktop.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
SlideMaker App's answer:
It is free and requires no login. In fact you can create as many slides as possible.
Share your experience with using Cert Decoder and SlideMaker App. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


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
Tracking SlideMaker App since Dec 2025.