IT Services Circle

Aug 8, 2026 · Information Security

Embedding an Entire Website Inside a Favicon: What the Experiment Reveals

The author demonstrates that a favicon—an 8×8‑pixel PNG image—can store a complete 166‑byte HTML page by encoding each byte into the RGB channels of individual pixels, then analyzes how this steganographic technique can bypass file‑type checks, evade CSP img‑src restrictions, and serve as a covert data channel, while noting its limited practical value for legitimate web publishing.