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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, 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 | toolgrid.pro | certdecoder.com |
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| Platforms | — | |
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In their own words, as submitted to SaaSHub.


No description of ToolGrid.pro 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
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 ToolGrid.pro 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
ToolGrid.pro's answer
Writers, bloggers, SEO people, Students, Developers and everyone in need of a fast text editor that runs and shows equally well on desktop and mobile. Toolgrid is designed for repeated use. Use the Feedback options to send us suggestions about the next tools to build!
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
ToolGrid.pro's answer
ToolGrid tools are designed to run exclusively in your browser. Your text, grades, SEO queries and inputs are processed locally and are not saved by ToolGrid. There is no data collection and the service is COMPLETELY FREE.
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.
ToolGrid.pro's answer
Toolgrid.pro is a FREE handmade online tools site for text, SEO, writing, editing, formatting, student tasks, and developer workflows. It's fast, simple, and ready to use. Each tool is added manually and each logic is tested and verified before being published.
Share your experience with using ToolGrid.pro 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.


Tracking ToolGrid.pro since Jun 2026.
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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