Integrity

Every glyph here is this page's own source, rebuilt from inside itself and lit through its SHA-256 and SHA-384 fingerprints.

The script is a quine: it fills a hole in its own template with a quoted copy of that template, rebuilding this file byte for byte.
Subresource Integrity refuses a script whose bytes don't match its integrity hash. crypto.subtle.digest computes this page's own.
Flip one input bit and about half the output bits change. That is the avalanche effect, shown bit by bit.
Canvas 2D lights a mask of every glyph through the rings. Hover to read; click a glyph to flip a bit.

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