
Swift Galleries
Preveal
ArtPlacer
PictureThat
Design and visualize your gallery wall with personal photos and true-to-scale frame sizes. Use AI to auto-arrange layouts instantly and preview how everything fits before you hang or buy.

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.
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| Website | gallery-planner.com | certdecoder.com |
| Pricing | ||
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| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


GalleryPlanner is a local-first web app for planning gallery walls with real measurements, real frame sizes, and your own photos. Instead of guessing on the floor and hoping it translates to the wall, you can set your exact wall dimensions, add your frame inventory, and design layouts to the inch...
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 GalleryPlanner and Cert Decoder.
GalleryPlanner's answer
GalleryPlanner was created by Tim Straub, a data scientist, after a real home project: turning a growing family frame collection into a clean wall layout with exact spacing.
Existing options did not meet two core needs:
So he built GalleryPlanner as a local-first, measurement-accurate planner for practical, confidence-first installs.
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.
GalleryPlanner's answer
Core stack
Feature stack
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
GalleryPlanner's answer
Primary audience: people planning real gallery walls in real homes.
It is especially useful for anyone who wants a measurable plan, not just visual inspiration.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
GalleryPlanner's answer
Choose GalleryPlanner if accuracy and execution matter.
Compared with tools like ArtPlacer and other broad visual planners, GalleryPlanner is optimized for people who want to actually hang the wall confidently.
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.
GalleryPlanner's answer
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
GalleryPlanner's answer
GalleryPlanner blends precision + privacy + AI in one tool.
Bottom line: it is not just a mood-board app, it is a practical planning workflow from idea to install.
Share your experience with using GalleryPlanner 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 GalleryPlanner since Feb 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 GalleryPlanner and Cert Decoder, you can also consider the following products.

Wall gallery design and sales software for photographers.
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ArtPlacer’s accurate previews of art in place, 3D virtual exhibitions and website integrations, help art professionals make the most out of their online presence.
Compare ArtPlacer to GalleryPlanner or Cert Decoder:

Fill your walls with art and photos in AR 🎨
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