HexDrop — Hex Viewer & Binary File Inspector

Drop any file. Instantly view it as hex, ASCII, and decoded text. Built for developers, modders, and reverse engineers.

HexDrop is a professional hex viewer built for developers, game modders, and security researchers. It runs entirely in your browser — no installs, no uploads, no accounts. Just drop a file and see every byte. Drop any file — executables, save games, ROMs, firmware, archives, images — and instantly see hex and ASCII side by side in a clean dual-pane view. ━━━ FEATURES ━━━ NAVIGATION • Click any byte → status bar shows hex value, ASCII character, and decimal • Jump to any offset (hex or decimal input) • Page Up / Page Down through large files • Handles files up to 100 MB without freezing SEARCH • Search by hex pattern (e.g. "4D 5A" to find MZ headers) • Search by ASCII string • Navigate matches forward and backward (Enter / Shift+Enter) • KMP algorithm — fast even on large files, capped at 50,000 results SELECTION & COPY • Click-drag to select any byte range • Copy selection as hex string or ASCII text ENCODING SUPPORT • UTF-8 with full emoji and multi-byte character support • UTF-16 Little Endian and Big Endian (with surrogate pair support) • Windows-1252 (complete 0x80–0x9F table) • Plain ASCII DISPLAY OPTIONS • Adjustable columns: 8, 16, or 32 bytes per row • Export full file as a formatted hex dump PRIVACY • Works 100% offline — nothing ever leaves your device • No network calls, no telemetry, no accounts • No third-party dependencies ━━━ BUILT FOR ━━━ • Game modders inspecting save files and PAK archives • Reverse engineers analyzing executables and firmware • CTF players and security researchers • Developers debugging binary file formats Built with pure vanilla JavaScript. No frameworks, no bloat, no servers. I built this while reverse engineering a 2008 UE3 game and needed something fast that worked offline. Nothing else fit — so I built it.