What features does OnlineInterview.io offer for live coding interviews?

OnlineInterview.io is a browser-based technical interview platform built around a shared room that combines a runnable code editor, embedded video chat, and a drawing board. It fits teams that want to screen or interview candidates without stitching together a separate meeting app, a shared editor, and a whiteboard. The site describes the platform as free and creates a room with one click; a room supports up to three users at once, so one candidate and two interviewers can share the same session.

Core features in the interview room

Online code editor that runs in the browser

The editor supports syntax highlighting and a REPL-style workflow: you pick a programming language, provide program input, run the code, and check the output directly in the browser. The site lists these languages:

For an interviewer, this means you can ask a candidate to write a function and then test it with a specific input during the session rather than reviewing untested code afterward. For example, if the task is parsing a string, the candidate can paste a sample input, run it, and you both see the output immediately.

Embedded video chat

Video chat runs inside the room, so you don't need a separate meeting tool for the conversation. The site explicitly frames this as removing the need for separate meeting software. In practice, the room becomes the single place for talking, coding, and drawing.

Shared drawing canvas

A shared drawing board is available for explaining concepts and sharing ideas. This is useful for the parts of an interview that aren't code: sketching a data structure, walking through system design, or diagramming an algorithm before implementation.

Session download

You can download the code and the drawing canvas image to save the session on your computer. This gives you a record of what was written and drawn, which is helpful for comparing candidates or sharing notes with a hiring team afterward.

Dark / light mode

The interface switches between dark and light modes, matching the IDE-style experience many developers prefer.

What the room setup looks like

1. Create a free virtual room with one click.
2. Share the room link with the candidate and any other interviewers.
3. Talk via the embedded video chat, write and run code in the editor, and use the drawing canvas as needed.
4. Download the code and canvas image when the session ends.

The expected result is a single shared session where up to three participants can collaborate in real time.

Where it fits and where to check first

The platform is positioned for recruiting, screening, and hiring across companies, agencies, and universities, and the site calls it a free remote tech interview platform. Before committing, confirm two things against your own needs: whether the language list covers the stack you interview for (it does not list every language), and whether a three-person cap suits your panel size. If you routinely run panels larger than two interviewers plus a candidate, the room limit is the constraint to plan around.