Persistent visual cache for LLM-driven software development. Caches screenshots using perceptual hashing, vector search, and AX trees to prevent token overhead and visual hallucination loops.

Node module for perceptual hashing images, written in Rust.

Structure- and layout-aware perceptual hashing for HTML/DOM trees.

Media similarity detection using perceptual hashing

Browser Compatible Object Hashing

WebAssembly bindings for Meta's PDQ perceptual image hashing algorithm

utilities for encryption and hashing

image deduper cli tool: use perceptual hashing (phash) to deduplicate a directory of images

Blazing-fast pixel-by-pixel image comparison with block-based optimization. 1.5x times faster than pixelmatch

The smallest and fastest pixel-level image comparison library.

TypeScript MD5 implementation

Efficiently find hashes within a certain hamming distance, typically used for perceptual hashing.

Hash utility functions for Ethereum.

fast string hashing function

Solidity coder for non-standard (tight) packing.

Generate hashes from javascript objects in node and the browser.

A cryptography algorithms library

An incremental implementation of MurmurHash3

Generate or verify a Proof Key for Code Exchange (PKCE) challenge pair

JS implementation of probabilistic data structures: Bloom Filter (and its derived), HyperLogLog, Count-Min Sketch, Top-K and MinHash