[ COMPARISON ]
Online compiler vs local IDE: which do you need?
Short answer: use CodeLab when setup is the blocker, and a local IDE when the project outgrows single-file runs. They solve different problems — here is the honest split.
| Dimension | Online compiler | Local IDE |
|---|---|---|
| Setup time | Seconds — open a URL | Minutes to hours — install toolchain |
| Best for | Learning, interviews, quick repros | Large projects, daily professional work |
| Sharing a run | One link opens identical state | Requires repo + environment replication |
| Classrooms | Identical runtime for everyone | Version drift across student machines |
| Offline work | Needs internet | Works fully offline |
| Big codebases | Single-file runs | Multi-file projects, debugging, extensions |
| Cost to try | Free, no account | Free, but setup effort |
Where CodeLab fits
CodeLab is a static page around an embedded runtime: you get 80+ languages with no installs and shareable links, but execution happens in a hosted sandbox — not on your machine. Graduate to a local IDE when you need multi-file projects, real debugging, offline work or dependency control.