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/svg

conformant SVG — declared SVG namespace, correctly nested tags, no external references, no <use> cycles; renders identically in every browser and SVG processor

chaos chaos.catastrophic.io

GET /svg

Returns SVG documents that misbehave for browser renderers, image processors, and XML-strict parsers. SVG is an XML+rendering hybrid so chaos modes span both worlds: malformed XML structure, external-resource references, recursive <use> chains, and non-conformant namespaces.

modes: mismatched-tags external-image-ref circular-use bad-namespace

full chaos docs →

control not.catastrophic.io

GET /svg

conformant SVG — declared SVG namespace, correctly nested tags, no external references, no <use> cycles; renders identically in every browser and SVG processor

full control docs →

Build against not.catastrophic.io/svg, then flip the hostname to chaos.catastrophic.io to exercise the chaos.