// PRODUCTION SYSTEM ARCHITECTURE
SimilarLogo
100%client-side privacy
Private brand-asset similarity auditor running 100% in-browser with zero server uploads.
ARCHETYPE: ARCHITECTUREsimilarlogo.com
Data & Execution Topology
INPUT DISCOVERY
Vector & raster logo artwork files selected locally via HTML5 File API
PROCESSING CORE
In-browser Web Worker generating 64-bit perceptual image hashes (dHash/pHash)
OUTPUT GUARANTEE
Visual similarity conflict report with percentage match and bounding differences
STEP 01Local File Select
STEP 02Browser Canvas Rasterize
STEP 03Perceptual Hash Gen
STEP 04Hamming Distance Match
STEP 05Zero-Leak Report
Key Engineering Decisions
§1Perceptual hashing (dHash) in Web Workers
Rather than exact cryptographic hashes (MD5/SHA) which break on a single pixel change, an optimized difference hashing (dHash) algorithm runs across Web Workers to detect resized, recompressed, and near-identical logos.
§2Air-gapped data boundary
Network inspection confirms zero outbound payload transmission. The Content Security Policy (`connect-src 'none'`) enforces cryptographic certainty that client assets never escape the local device.
§3Sub-millisecond bitwise Hamming comparisons
Comparing 64-bit binary hashes using bitwise XOR (`^`) and popcount enables instant comparison across hundreds of logo assets in under 5ms.
Engineering Implementation Breakdown
// frontend
Reactive single-page application with drag-and-drop batch asset comparison.
// backend
None. 100% client-side architecture executing inside an isolated browser sandbox.
// automation
Web Worker multi-threaded hashing allowing instantaneous scanning of hundreds of logos without UI freezing.
// deployment
Static assets served from global edge CDN with strict Content Security Policy (CSP).
RETURN TO WORKSPACETAJUL ISLAM // DHAKA, BANGLADESH