Hex Editor — Binary Viewer

NAX Tech

Contains ads

About this app

A fast, focused hex editor for Android. Open any binary file — PNG, ZIP, ELF, firmware, save games, network captures, archives — and read it the way developers do: byte by byte, hex and ASCII side by side.

Hex Editor is built for engineers, reverse-engineers, security researchers, students, and anyone who needs to peek inside a file. It's read-only by default — your data is never modified unless you explicitly switch to edit mode. Everything happens on-device. There is no account, no telemetry, no cloud, no ads when you upgrade.

WHAT YOU CAN DO

• Open any file via SAF — no permission prompts beyond what Android already shows.
• View hex + ASCII side by side. Smooth paged scrolling handles files up to gigabytes.
• Search for hex patterns ("89 50 4E 47") or ASCII strings, jump between matches.
• Goto offset — decimal, hex, or a math expression (0x1000 + 16).
• Bookmark interesting offsets and jump back any time.
• Data inspector: int8/16/32/64, uint, float32/64, LE/BE, bit grid, header bytes.
• Hash any range — MD5, SHA-1, SHA-256, CRC32 — for quick verification.
• Extract strings — ASCII, UTF-16 LE, UTF-16 BE — minimum length tunable.
• Compare two files byte-by-byte with diff offsets, navigation, and shift detection.
• Auto-detect file structure for PNG, ZIP, PE, and ELF — chunk and section regions.
• Histogram and entropy for any selection — spot compressed or encrypted blobs at a glance.
• Edit bytes, insert, delete, replace, apply binary patches. Full undo / redo history.
• Export to xxd or Intel-HEX. Re-import patches and replay them on another file.

PRIVACY-FIRST

Hex Editor is fully offline. Your files never leave your device. No account, no cloud, no analytics. The Pro upgrade unlocks editing and removes the single small ad — your data stays yours either way. Read the privacy notice before you install: it's short and honest.

DESIGNED FOR FOCUS

• Material 3 dark theme tuned for long reading sessions.
• Monospace grid with byte-level selection and range anchors.
• Tab-switchable density and address base (hex / dec / oct).
• Onboarding tour, contextual hints, and tooltips on every tool.

UPGRADE WHEN YOU NEED IT

The free tier is fully functional for reading, inspecting, and analyzing binaries. The optional Pro one-time purchase unlocks editing, patch tools, and removes the single ad. Buy it once, keep it forever — no subscription.

Built by a small team in Bangkok, for developers everywhere.

What’s new

First release. Offline hex editor for Android. Open any binary — PNG, ZIP, ELF, firmware — and read it byte by byte. Hex + ASCII side by side. Search patterns, jump to offset, bookmark, diff two files, inspect data types, hash any range, extract strings, detect file structure. Edit and patch with Pro. No account, no cloud, no tracking.