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TestGorilla
DevSkiller
mettl
Codility provides a SaaS platform with advanced validation, security and protection features to evaluate the skills of software engineers.

Gumlet
imgix
Bunny.net
Firesize
Upload
Upload an image once. Resize, optimize, and serve it anywhere using simple URL parameters. No SDKs or setup required.

Which is more popular?
Based on our record, Codility seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codility.com | fireimg.com |
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| Listed in |
In their own words, as submitted to SaaSHub.


The Codility platform includes: CodeCheck - Design role-specific remote skills assessments to screen your technical candidates before moving them to the interview stage. CodeLive - Host technical remote or onsite interviews via our shared editor using a range of templates and whiteboards....
No description of FireImg yet.
What each product offers, as listed by its team.


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


No analysis of Codility yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
An Introduction to Codility: The Tech Hiring Platform for Engineering Teams
No FireImg videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Codility and FireImg.
FireImg's answer:
It's this simple
Original: https://img.fireimg.com/raw-images/demo/mountain.jpg
Resize to 300px: https://img.fireimg.com/demo/images/mountain.jpg?width=300
Resize to 800px: https://img.fireimg.com/demo/images/mountain.jpg?width=800
Resize with query params: https://img.fireimg.com/demo/images/mountain.jpg?width=800
Same image. Different sizes. Just change the URL.
FireImg's answer:
No CC needed until you exceed the free tier
Simple resizing
Works well with any framework, or no framework at all!
FireImg's answer:
We built FireImg after repeatedly running into how complex image optimization can be. Most solutions require setting up pipelines, learning new APIs, and dealing with unpredictable pricing.
For many projects, that felt like overkill. Hand-rolling something always distracted from what actually mattered.
So we built FireImg to be as simple as possible. Upload an image and transform it directly via URL. No setup, no SDK, no managing image libraries. Upload once, then generate and serve thousands of variations by changing the URL, with built-in caching so each transformation happens only once.
As we built it, we kept pushing toward simplicity and removing anything unnecessary. The goal was to make something you can try instantly and understand in seconds.
Share your experience with using Codility and FireImg. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codility is a platform that helps companies assess the coding skills of developers. They offer a range of online coding tests and assessments that enable employers to evaluate candidates' technical abilities.
We have no reviews of FireImg yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


- Technical skills: have they got the walk to match the talk? Programming languages on a resume mean little if candidates are unable to demonstrate their hard coding skills. You can test these skills with technical skill tests, such as... - Source: dev.to / over 2 years ago
Codility : Verify and improve coding skills. - Source: dev.to / over 5 years ago
Tracking FireImg since May 2026.
When comparing Codility and FireImg, you can also consider the following products.

HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
Compare HackerRank to Codility or FireImg:

Gumlet is an end-to-end AI-powered video streaming and image delivery platform.
Compare Gumlet to Codility or FireImg:

CodeSignal is the leading assessment platform for technical hiring.
Compare CodeSignal to Codility or FireImg:

Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.
Compare imgix to Codility or FireImg:


BunnyCDN is a simple and powerful CDN, offering lightning fast performance for a fraction of the cost with free SSL, Brotli, HTTP/2 and 100% Pay As You Go pricing.
Compare Bunny.net to Codility or FireImg: