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

SkyFi
Downlink
Planet Explorer
Satellite imagery when you need it

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 | sfera.earth |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Bulgaria · 1 - 9 employees · 2019 |
| 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.
Sfera Technologies delivers high-resolution satellite imagery from earth observation satellites through its cloud-based tasking platform. The system provides access to optical, radar, thermal, and hyperspectral data, eliminating traditional satellite infrastructure costs.
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 Sfera Technologies.
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.
Sfera Technologies's answer:
Founded in 2019 in Sofia, Bulgaria by aerospace engineers to simplify satellite data access and delivery workflows.
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
Sfera Technologies's answer:
Cloud platform architecture and satellite tasking.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Sfera Technologies's answer:
Geospatial developers, satellite operators, space agencies, agricultural tech companies, and enterprises needing satellite intelligence.
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.
Sfera Technologies's answer:
Fast data delivery, multi-sensor access across different satellites, flexible pricing models, and an intuitive cloud-based platform for satellite tasking and data management.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Sfera Technologies's answer:
We can't publicly disclose any customer names.
Sfera Technologies's answer:
Sfera is a reliable satellite imagery provider combining satellite tasking, cloud delivery, and flexible pricing in one solution.
Share your experience with using Cert Decoder and Sfera Technologies. 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 Sfera Technologies since Jan 2026.