Lossless low level DXF object model.

Type-safe, lossless round-trip conversion between OOXML packages (docx, pptx, xlsx) and JSON, built on Zod 4 codecs.

Pure JavaScript minimal lossless JSON parse event streaming, akin to SAX. Fast, modular, and dependency-free.

Tailwind v4-first CSS style object to utility class serializer with lossless arbitrary-property fallback.

A JavaScript JPEG Lossless decoder.

AT-1 / TinyFiles CLI — verified-lossless, queryable compression. Native prebuilt binary, no Python required.

Algorithmic VCC compaction for omp - fast lossless no-LLM

Lossless JSON-to-AST Parser and AST-to-JSON Generator

ZSTD lossless compression algorithm bindings for Node.js

Convert Scratch 3 .sb3 projects into a lossless, human-readable DSL and pack them back

Never lose context again. lossless-claude compresses Claude Code sessions into searchable memory — every message preserved, every insight remembered.

Thread session memory for dsh — lossless event capture + status-card injection (dsh plugin, standalone repo).

TOML 1.1.0 parsing, editing and formatting as Effect schemas: typed diagnostics, a lossless CST and first-class date-time values.

Lossless, provable, composable LLM context compression

PNG codec for squoosh-kit, providing lossless PNG encoding and decoding.

Lossless TypeScript OOXML workbook engine for editing real XLSX and XLSM files.

Lossless context compression engine for LLMs

A lightweight and zero-dependency WebP lossless (VP8L) image decoder written in pure JavaScript.

Lossless parsers for LPD, LAP PLY, CAL, STL, and tolerance CSV formats

lossless text compression