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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, Sedo should be more popular than Cert Decoder. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | sedo.com | certdecoder.com |
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In their own words, as submitted to SaaSHub.


No description of Sedo yet.
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 Sedo yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Sedo 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 Sedo and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Sedo is a great place for buying, parking, and selling your domain names. They offer many services for buyers and sellers such as free registration, free transfer service, free parking, etc. Sedo also allows you to...
Sedo is the leading domain marketplace for selling and buying domains. Sedo offers many tools for selling your domain name or website. You can put your domain name or website up for sale and after you have received...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Https://sedo.com/us/ is the largest listing site I know of, if you want to sell at a fixed price. https://uk.auctions.godaddy.com/ is the largest auction site. If you're looking for a quick sell, this is the place. - Source: Hacker News / almost 4 years ago
I have several domains for sale. At the moment I want to sell the domain by https://sedo.com/us/. Maybe is a better alternative? Source: about 4 years ago
Sedo — “Search Engine for Domain Offers” — is a platform for the professional trading of domain names. It provides a searchable marketplace with over 19 million listed domains as well as services for domain buyers and sellers, including... 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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