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

Sawyer
ClassDuo
Tuio.org
CourseStorm
Swiftlier, the all-in-one platform for educational businesses. Streamline complexity. Maximise potential. Swiftlier cuts through admin with automation, giving you time to sell, lead and educate

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 | swiftlier.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United Kingdom |
| Listed in |
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.
No description of Swiftlier yet.
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 Swiftlier.
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.
Swiftlier's answer:
We specialise in building systems that work for businesses, and not the other way around. We foster long term partnerships with our clients, building and operating their key systems and using that software to provide unique differentiation over their competitors.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Swiftlier's answer:
Swiftlier is the all-in-one tool to supercharge your organisation. It automates and aids everything you already do across the student lifecycle - from marketing and sales, through to onboarding, delivery and post-course engagement.
Share your experience with using Cert Decoder and Swiftlier. 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 Swiftlier since Sep 2025.