Privacy
No user data collected. base64app does not upload, store, or log anything you paste into the decoder or encoder — processing stays in your browser. Charts and tables in these reports are based on public documentation and our own analysis, not visitor submissions or server analytics.
Key findings
- At 64 KB, Node Buffer (~0.025 ms) and browser atob (~0.014 ms) decode in sub-millisecond range on modern hardware.
- Go and Rust stdlib lead on 1 MB payloads; Python base64 is ~3–4× slower at large sizes.
- Performance rarely matters below 256 KB; API design (avoid huge JSON fields) matters more.