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WinCompose supports the standard Compose file format.

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, WinCompose seems to be a lot more popular than Cert Decoder. While we know about 47 links to WinCompose, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | github.com | certdecoder.com |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of WinCompose 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.


Overall verdict
Why this product is good
Recommended for
WinCompose is recommended for writers, developers, translators, and anyone who frequently needs to input special characters and symbols. It's particularly useful for users working with multiple languages or those in fields requiring extensive use of non-standard notation.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Working with WinCompose
No Cert Decoder videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing WinCompose 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 WinCompose 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.


For Windows users, I recommend WinCompose: https://github.com/samhocevar/wincompose I use the Insert key, which would otherwise have no function. - Source: Hacker News / 12 months ago
What I've been using: Install https://github.com/samhocevar/wincompose and you can then press AltGr then three hyphens to insert one. Or if you're on Linux just search for "compose key". - Source: Hacker News / over 1 year ago
Julia has made symbol input manageable and lets you define infix operators for many of the Unicode symbols that make sense for that. [1] And JuliaMono was designed to support the symbols that Julia does. [2] I generally do quite fine... - Source: Hacker News / almost 3 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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