
Dark Reader
Midnight Lizard
Night Eye
Dark Night Mode
Dark Background and Light Text
Turn Off the Lights
Dark mode / night reader
A global dark theme for the web

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, Dark Mode should be more popular than Cert Decoder. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mybrowseraddon.com | certdecoder.com |
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| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Dark Mode 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 Dark Mode 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 Dark Mode 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 Dark Mode 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.


Dark mode extension is a Google Chrome dark mode extensions made for web pages. A Chrome browser extension that makes it easy to instantly make the screen (browser) black at night.
Dark mode for apps has been the new craze. It started as a design trend on Android and iOS devices but has soon made it to Windows and many Mac applications too. While the primary quirk of having a dark mode is to...
Dark Mode is a global Chrome extension that can even run offline. Its toolbar icon acts as a switch to turn the dark mode on or off. Once installed on Chrome, you can visit the “Options” page to choose from more than...
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.


I would be interested if it has a proper dark mode, though currently I use Dark Mode for most sites but it doesn't really work on floatplane. Source: over 3 years ago
I use an extension for enabling dark mode on webpages. Doesn't work with everything but it's good to have when needed. Source: about 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
When comparing Dark Mode and Cert Decoder, you can also consider the following products.

Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
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Accessible color schemes for all websites
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Night Eye is a browser extension that enables dark mode on any website you visit. It does not ruin your browsing experience by simply inverting images.
Compare Night Eye to Dark Mode or Cert Decoder:

It is a universal night mode for the entire Internet.
Compare Dark Night Mode to Dark Mode or Cert Decoder:

Makes every page (or only pages that you want) to have light text on dark background.
Compare Dark Background and Light Text to Dark Mode or Cert Decoder:

With a single click on the lamp button, the page will fade to dark.
Compare Turn Off the Lights to Dark Mode or Cert Decoder: