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Magic Sidebar is the best browser extension for Twitter. Use it today and unlock insights you never knew about, communicate better with your audience, and build strong 1:1 relationships. Mobile apps for iOS and Android are also available!

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

Which is more popular?
Based on our record, BlackMagic.so should be more popular than Cert Decoder. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.


✅ Powerful Real-Time Analytics ✅ Personal Twitter CRM ✅ Audience Growth Tools ✅ Scheduling & Publishing
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.
What each product offers, as listed by its team.


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


No analysis of BlackMagic.so yet.
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 BlackMagic.so and Cert Decoder.
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.
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.
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.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Share your experience with using BlackMagic.so and Cert Decoder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I use a great tool called Black Magic which shows me the most engaging hours of the day:. - Source: dev.to / over 3 years ago
Https://blackmagic.so - Uncover information you didn't know about. Improve your audience communication. Develop solid one-on-one relationships. Source: over 4 years ago
I found this project that updates a user's Twitter banner in real time with their recent followers. Since I have an idea for something similar I was wondering what the best way to implement something like this would be? Source: over 4 years ago
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
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