File-upload hardening for nifra - magic-byte MIME detection, size + type validation, short-TTL signed download URLs, and EXIF/metadata stripping. Dependency-free, edge-safe.

File operations that don't lie — magic-byte MIME detection catches spoofed extensions, size + content validation is built in, and presigned S3 uploads are one call away. Stream-first so large uploads don't blow your memory.

Hex viewer, binary inspector, magic byte detection, string extraction.

Production-ready secure file upload validation and sanitization using magic-byte detection

Framework-agnostic file-upload pipeline core: storage adapters (Azure/S3/local), magic-byte validation, presigned uploads

Confulent Kafka avro serializer with magic byte and schema id

Aria App Framework — kit module. Small dependency-free server utilities: open-redirect guard (safeReturnTo), SQL LIKE escaping, magic-byte upload validation (fileSniff), Crockford base32 tracking IDs, and person-name compose/split helpers.

Lightweight gzip-compressed JSON container with magic-byte framing. Compress, export, and restore typed JSON payloads as Blob, ArrayBuffer, or base64 — built for Cloudflare Workers and browser environments.

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Robustly get the byte length of a Typed Array

Get the byte length of an ArrayBuffer, even in engines without a `.byteLength` method.

Robustly get the byte offset of a Typed Array

Get the byteOffset out of a DataView, robustly.

Get the byteLength out of a DataView, robustly.

Minimalist yEnc and dynEncode encoder and decoder library for browser and NodeJS

Modify strings, generate sourcemaps

Some useful utilities I often need

Resumable uploads — tus-js-client + exifr (EXIF strip) + file-type (magic-byte sniffing)

Strip UTF-8 byte order mark (BOM) from a string

Harden browser image uploads in one call: magic-byte validation, HEIC to JPEG, EXIF-stripping compression, worker-with-main-thread-fallback, and safe filenames.