
PlantUML
draw.io
LucidChart
Mermaid Chart
Excalidraw
Diagramly.ai
yEd
Create diagrams and visualizations using text and code.

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, Mermaid seems to be a lot more popular than Cert Decoder. While we know about 62 links to Mermaid, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | mermaid.js.org | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Mermaid 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 Mermaid 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 Mermaid 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 Mermaid 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.


Like PlantUML, Mermaid follows the diagrams-as-code model. It is supported by GitHub and uses Markdown-style notation to create and modify diagrams. This makes diagramming with Mermaid very convenient if you're...
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.


Seems a bit more like https://mermaid.js.org use cases! - Source: Hacker News / 2 months ago
I wanted authors on my Forem instance to write flowcharts and sequence diagrams using Mermaid syntax directly in their articles, like this:. - Source: dev.to / 3 months ago
Credits: - label: Cover image text: Kelly Sikkema on Unsplash url: https://unsplash.com/@kellysikkema - label: Diagram library text: Mermaid url: https://mermaid.js.org/. - Source: dev.to / 4 months 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
When comparing Mermaid and Cert Decoder, you can also consider the following products.

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Compare PlantUML to Mermaid or Cert Decoder:


LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Compare LucidChart to Mermaid or Cert Decoder:


Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
Compare Excalidraw to Mermaid or Cert Decoder:

Diagramly is an innovative tool that uses artificial intelligence to convert text descriptions or images into editable diagram code.
Compare Diagramly.ai to Mermaid or Cert Decoder: