Under the Hood: The Architecture of SVG to Data URI Converter
Data-URI builders that upload SVG also upload any script inside it. This converter reads markup (paste or File.text), encodeURIComponent the UTF-8 string, and prefixes data:image/svg+xml;utf8,. CSS background-image snippet is derived. Entirely local.
Memory Allocation & Browser Threading Mechanics
URI length is roughly 3x the SVG due to percent-encoding. Huge illustrations can make a heavy textarea; that is a browser limit, not a server quota. useMemo recomputes on svg change.
Algorithmic Deep-Dive: Code Snippet & Logical Analysis
const uri = "data:image/svg+xml;utf8," + encodeURIComponent(svg.trim());
utf8 in the media type plus encodeURIComponent is the interoperable form for inline CSS. Base64 is not used here; it would be longer for SVG text. This is not a sanitizer—pair with the SVG sanitizer before inlining untrusted art.
The Local Storage Sandbox & Volatile Data Pipelines
Clipboard write of the URI. No Blob download required. File object can be removed from the list without persisting the markup unless it remains in the textarea.
Verifying True Privacy: How to Audit Your Browser's Network Tab
F12, Network, clear, convert. The SVG must not POST. If the URI is huge, still no network.