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Poper Blocker is an extension for Google Chrome that blocks the popups and popunders whenever you enter in a website or visit a page.

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, Poper Blocker should be more popular than Cert Decoder. It has been mentioned 7 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | poperblocker.com | certdecoder.com |
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| Listed in |
In their own words, as submitted to SaaSHub.


No description of Poper Blocker 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 Poper Blocker 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 Poper Blocker 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 Poper Blocker 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.


Poper Blocker is great when it’s relevant, but it was hard to test this extension because pop-ups are surprisingly difficult to find on most modern websites and web browsers. Most browsers already have a built-in, and...
In this case, Poper Blocker focuses on blocking pop-ups, pop-unders, overlays, timed and scroll pop-ups, and other varieties that might slip past other ad-blocking extensions. Small notifications tell you when pop-ups...
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://poperblocker.com - automatically removes all ad pop ups, pop unders, and overlays for a cleaner browsing experience. Source: about 4 years ago
This is the Chrome extension I use. Is there a safari alternative for Mac/iOS capable of removing overlays? Source: about 4 years ago
As far as I know though, I can't get it to work. Tested using both Firefox and Edge. Regardless I don't think there was anything that directly made it go away. I do have a popup blocker (Poper Blocker) and an adblocker (Adblock Plus)... 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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