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Project Euler is a series of challenging mathematical/computer programming problems that will...

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Turn any photo into a custom paint-by-number design. Preview it, download free print-at-home files, or order a complete kit with canvas, paints, and brushes.

Which is more popular?
Based on our record, Project Euler seems to be more popular. It has been mentioned 415 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | projecteuler.net | pbnify.com |
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In their own words, as submitted to SaaSHub.


No description of Project Euler yet.
PBNify is a browser-based creative tool that turns a photo into a custom paint-by-number design. Upload an image, preview the result, adjust the crop and background, then download a free print-at-home PDF. No account is required to create a design. Customers who want a physical project can order...
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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No analysis of PBNify yet.
Walkthroughs and reviews on video.
Project Euler Challenges 1–4 - Coding Challenges with Florin
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Project Euler and PBNify.
PBNify's answer:
PBNify connects the whole custom paint-by-number experience in one place. Upload a photo, preview and adjust the design, and download a free print-at-home PDF without creating an account. If you want a physical project, you can order the same design as a complete kit with a printed canvas, matched paints, and brushes.
PBNify's answer:
Choose PBNify when you want to see and refine your custom design before deciding what to buy. You can start free without an account, adjust the crop and background, download a printable PDF, or order a ready-to-paint kit based on the same photo.
PBNify's answer:
PBNify is designed for hobby painters, families, pet owners, gift-givers, and anyone who wants to turn a meaningful photo into an approachable art project. It works for people who want a free printable as well as those who prefer a complete physical kit.
Share your experience with using Project Euler and PBNify. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
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Recommendations tracked on public social media and blogs since March 2021.


Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 5 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 8 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 10 months ago
Tracking PBNify since Aug 2026.
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