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An all-in-one free online PDF editor that does not require subscriptions or installations! DeftPDF is a free online tool that makes editing and converting easy in just a few clicks!

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?
Cert Decoder might be a bit more popular than DeftPDF. We know about 1 link to it since March 2021 and only 1 link to DeftPDF.
Website, pricing, platforms and company facts side by side.
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| Website | deftpdf.com | certdecoder.com |
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In their own words, as submitted to SaaSHub.


An all-in-one free online PDF editor that does not require subscriptions or installations! DeftPDF is a free online tool that can convert, edit, fill, sign, merge, split, translate, combine, number, crop, delete pages, greyscale pages, rotate pages, protect or unlock, repair, watermark, resize,...
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
DeftPDF is recommended for users who need quick and straightforward PDF editing solutions without the need to install software. It is suitable for individuals, small businesses, students, and professionals who require efficient PDF management tools for tasks such as document annotation, conversion, and merging.
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 DeftPDF 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 DeftPDF 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.


Use deftpdf.com to add margins to your pdf and then use any other note taking app to take handwritten notes. 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
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