Prove what you can actually build
Practice with instant feedback, test yourself against the clock, and earn a verifiable certificate employers can check in one click — across 14 coding courses.
Three ways to test
Learn it, prove it, get certified
Pick a course below — then choose how far you want to go. Two of the three are completely free.
Practice
Answer at your own pace with instant feedback and an explanation after every question.
Test Yourself
A timed, 15-question check with a score and full review — see if you're exam-ready.
Get Certified
A timed exam, scored on the server. Pass to earn a verifiable certificate you can share on LinkedIn.
Course catalogue
Choose your course
Prices shown are for the certification exam. Practice and Test Yourself are always free. All 864 exam questions across 14 courses are live — see the full price list.
How it works
From lesson to certificate
Learn & practise
Work through the course, then sharpen up in free Practice mode with instant feedback.
Take the exam
A timed certification exam, locked to full screen with copy-paste disabled. Pass mark is 70% — retakes available after a cooldown.
Share & verify
Get an instant certificate with a public verify URL and QR code. Add it to LinkedIn.
Why the result means something
A certificate is only worth the exam behind it
Plenty of certificates can be earned by keeping a second tab open. Here is exactly how these exams are built, so you can judge for yourself whether the credential is worth putting your name on.
Your browser never receives the answers
Questions are held server-side and sent without their answer keys. Scoring happens on the server after you submit. There is nothing in the page source, the network tab or local storage that reveals a correct answer — because the answer was never sent to you.
The exam is drawn from a bank you cannot see
There are 864 questions across 14 courses, and each attempt draws a subset. Two people sitting the same certification do not get the same paper, and a retake is a genuinely new attempt rather than a second run at a memorised set.
Integrity checks, described honestly
The exam runs locked to full screen. Copy, paste and right-click are disabled, leaving the tab is recorded, and three violations submit your paper automatically. This is browser-based checking — not webcam supervision and not identity verification. We would rather tell you that plainly than imply more than we do.
Anyone can check it, forever
Each certificate carries a unique ID and a public verification page. A recruiter does not have to take a PDF at face value — they enter the ID and see whether it is genuine, who it belongs to and what it was awarded for. The certificate does not expire.
70% is a real pass mark
You need 70% to pass, and not passing is a normal outcome rather than a payment problem. You can retake after a cooldown. A pass rate that everyone clears would make the certificate worthless to the person reading it.
The price is set by the server
The amount is decided server-side and clamped to the advertised tier, so a page cannot ask your card for more than it says. Payment runs through Razorpay and the signature is verified on our side before any certificate is issued — we never see your card details.
What it is not: a degree, an accredited qualification, or a substitute for a portfolio. It is evidence that you sat a timed exam on a specific subject and scored at least 70%, which a hiring manager can confirm in one click. Useful alongside real projects — not instead of them. See the price list for what each certification costs.
Hiring? Verify a candidate's certificate
Enter a certificate ID to instantly confirm it's genuine.
Ready to prove your skills?
Pick a course and start free — no sign-up needed for practice.
Choose a course