
iLovePDF
Adobe Acrobat DC
Smallpdf
ToolsNow
AppErgo
10015.io
ToolMates Hire
100+ privacy-first browser tools. No uploads required. JSON formatter, image compressor, GST calculator, SIP calculator & 70 free tools. 100% private, runs in your browser.

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.
|
|
|
|
|---|---|---|
| Website | toolmasterapp.in | certdecoder.com |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


ToolMasterApp is a collection of 100+ free browser-based tools designed for developers, students, creators, and businesses. From PDF and image tools to developer utilities and calculators, everything runs directly in your browser using client-side processing. No uploads, no tracking, and no...
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 ToolMasterApp.in and Cert Decoder.
ToolMasterApp.in's answer
I noticed that many online tools required users to upload personal documents and files to unknown servers. I wanted to create a safer alternative where people could get things done without sacrificing their privacy. That's how ToolMasterApp was born—a growing collection of browser-based tools designed to be fast, secure, and accessible to everyone.
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.
ToolMasterApp.in's answer
Hey everyone! 👋
I built ToolMasterApp to solve a problem I faced myself: most online tools ask users to upload sensitive files to unknown servers.
ToolMasterApp offers 100+ browser-based tools that process everything locally on your device. No uploads, no tracking—just fast and privacy-first tools.
I'd love your feedback and suggestions on what tools you'd like to see next. Thank you for checking it out! 🚀
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
ToolMasterApp.in's answer
ToolMasterApp is built for developers, students, freelancers, content creators, small businesses, and anyone who needs fast and reliable online tools without compromising privacy.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
ToolMasterApp.in's answer
Unlike many online tools that require file uploads, ToolMasterApp processes everything locally on the user's device. This means better privacy, no waiting for uploads, faster results, and zero risk of sensitive files being stored on external servers. It's free, easy to use, and designed with trust in mind.
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.
ToolMasterApp.in's answer
ToolMasterApp is currently used by a growing community of developers, students, freelancers, and small businesses worldwide. As an independent product, our focus is on building trust and delivering value to everyday users.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
ToolMasterApp.in's answer
ToolMasterApp stands out because all tools work directly in the browser using client-side processing. Users don't need to upload files to external servers, ensuring complete privacy, faster performance, and a seamless experience. With 100+ free tools in one place, ToolMasterApp combines convenience, security, and simplicity.
Share your experience with using ToolMasterApp.in 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 ToolMasterApp.in 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
When comparing ToolMasterApp.in and Cert Decoder, you can also consider the following products.


Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Compare Adobe Acrobat DC to ToolMasterApp.in or Cert Decoder:

PDF document management and conversion suite
Compare Smallpdf to ToolMasterApp.in or Cert Decoder:

Free calculators and file tools that run entirely in your browser. No uploads, no accounts, no tracking of what you type.
Compare ToolsNow to ToolMasterApp.in or Cert Decoder:

200+ free browser tools, most under 40 KB. Lightweight, private and easy to use, with no signup, no intrusive ads and no server-side processing.
Compare AppErgo to ToolMasterApp.in or Cert Decoder:

10015.io is an all-in-one toolbox offering many tools from various categories.
Compare 10015.io to ToolMasterApp.in or Cert Decoder: