
Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

Microsoft Office Excel
DataWrapper
Flourish
ChartPixel
ChartStud
MakeCharts
Create stunning data visualizations in minutes. Upload your data (CSV/Excel/JSON and many more), clean messy data automatically, and generate publication-quality charts without coding. 12 chart types, smart data cleaning, instant results.

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.
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| Website | certdecoder.com | cleanchart.app |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Switzerland · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


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.
CleanChart.app is a no-code data visualization tool that helps you turn your raw data into professional, publication-ready charts in minutes — without Excel, coding, or design skills. You simply upload your data, let the app automatically clean and format the data, choose a chart type, and export...
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 Cert Decoder and CleanChart.
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.
CleanChart's answer:
CleanChart was built to solve a common pain point: turning messy, real-world data into visual insights faster and with less frustration than traditional tools like Excel or programming languages. It emphasizes simplicity — upload a file, clean the data automatically, pick a chart type, and export results — with privacy and ease-of-use at its core.
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
CleanChart's answer:
CleanChart is primarily a Python-based application, with JavaScript powering the web interface, and Cython/C components used for performance optimization.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
CleanChart's answer:
The primary audience includes non-technical users who need to create clear and professional charts quickly — such as students doing assignments or theses, business professionals preparing reports or presentations, and anyone who wants insight from data without wrestling with spreadsheets or coding.
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.
CleanChart's answer:
No technical skills required – CleanChart lets you go from raw data to polished chart in minutes without Excel wizards, coding, or BI expertise.
Automatic data cleaning – Upload messy CSV/Excel files and the app detects and fixes issues like missing values and formatting errors for you.
Professional-grade results fast – Designed for readability and clarity, charts are publication-ready with accessible defaults and export options (PNG/SVG).
Affordable, transparent pricing – Pay-per-chart or low-cost options instead of expensive subscriptions typical of many analytics platforms.
Great for non-enterprises – Ideal for students, researchers, and business users who need insight visualization without heavy BI tools.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
CleanChart's answer:
Mostly people who want to clean their data quickly and easily, and then visualize it. It is designed for people with no coding skills or for those who don’t know how to do it using common software such as Excel.
CleanChart's answer:
Automatic Data Cleaning Built In – Unlike most chart makers that assume your data is already neat, CleanChart detects and fixes common issues like missing values, duplicates, and inconsistent formats before you generate a chart. This means you spend less time prepping and more time visualizing.
True No-Code Experience – You don’t need Excel expertise, scripting skills, or design knowledge to produce professional charts. With just file upload and a few clicks, you get clean, ready-to-use visualizations.
Fastest Path from Raw Data to Chart – CleanChart’s workflow is optimized for speed: upload, clean, select, export — often within minutes. Compared to tools like Google Sheets or coding in Python, it’s one of the quickest ways to go from messy data to visual output.
Professional-Quality Defaults – Charts are designed with excellent readability and accessibility by default — with legible labels and color palettes meant to communicate insight clearly without manual tweaking.
Privacy-Focused & Simple Pricing – Data processing happens in the browser (keeping your data private), and pricing is token-based rather than subscription locked — making it more accessible for occasional users and smaller budgets.
Broad Use Cases Beyond Analysts – While many visualization tools are built for analysts or require specialized skills, CleanChart targets everyday users — students, professionals, and anyone who needs clear charts without the BI complexity.
Share your experience with using Cert Decoder and CleanChart. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


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
Tracking CleanChart since Feb 2026.