LIVE CODEC RACE

Beat the tile pyramid—or fall back.

FIC/2 combines a 16px whole-image root, 64px fine blocks, and 256px checkpoint blocks. The viewport chooses the cheapest useful branches. The same image is also encoded as a conventional 256px compressed tile pyramid, and the router keeps the baseline whenever FIC/2 grows more than one percent larger.

The improvementfast 32-bit XOR filter64px fine blocks for partial views256px checkpoints for broad viewsexact block deduplicationbaseline fallback when FIC loses

Starting the 512px browser proof…

AUTHORITATIVE ROUTE—
Waiting for both encoders.
This router is the safety mechanism: a difficult image is allowed to remain a conventional tile pyramid rather than becoming a larger FIC object.
FIC/2 total—
pyramid total—
FIC size change—
root preview—
logical blocks—
physical blocks—
omitted / deduped— / —
encode FIC / pyramid—

SOURCE + VIEWPORT

Drag to choose what is visible.

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EXACT CROP RESULT

One crop, two routes.

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FIC/2

payload bytes
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cold object
—
decode
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blocks
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256px tile pyramid

payload bytes
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cold object
—
decode
—
tiles
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Waiting for a crop race.

FRACTAL BLOCK ATLAS

Logical regions share physical blocks.

click a cell
Select a block to inspect its Base-4 region.

INTEGRITY + CLAIM BOUNDARY

Exact pixels, provisional speed.

Full verification not run.

What this page can show: live browser results for one image, one crop, one machine. The committed Node harness compares warm-system package size, incremental crop payload, cold-object crop bytes, and repeated decode timings.

What it cannot claim yet: broad superiority over image codecs or tile systems. The current pass is a public synthetic fixture. A photographic corpus, sealed holdout, decoder-size accounting, and independent-machine reproduction remain required.