Binary & Hex Tools

Upload any file to view its raw binary contents as an interactive hex dump with side-by-side hex and ASCII column display. Search for byte patterns using hex notation (FF D8 FF) or ASCII text, navigate through pages of 1024 bytes, and inspect every byte. Supports files of any type and size - all processing is local in your browser, no signup required.

Convert text to binary (0s and 1s) or decode binary to text with 8-bit UTF-8 and 16-bit UTF-16 representation modes. See a detailed character breakdown table showing binary, decimal, and hex values for each character. Supports swap direction, real-time conversion, and copy/download. All processing is local in your browser - free online ASCII to Binary Converter, no signup required.

Compute Cyclic Redundancy Check (CRC) values for text strings or files using CRC-8, CRC-16, CRC-32, and CRC-64 with 18 polynomial standards including IEEE 802.3, MODBUS, Castagnoli, Kermit, XMODEM, ECMA-182, and more. View results in hex, decimal, and binary formats. Verify computed values against expected checksums and download results as text reports. File streaming supports unlimited file sizes with live progress bars - all processing is local in your browser, no signup required. Free online CRC calculator.

Upload any file to verify that its magic bytes match its extension and check for header-level corruption. Deep header validation for JPEG, PNG, PDF, ZIP, EXE, ELF, and more. Supports 120+ file signatures across 16 categories. Quick integrity triage tool - all processing is local in your browser, no signup required.

Upload any file to count byte values (0-255) and view a complete frequency distribution. Calculates Shannon entropy to classify files as text, binary, compressed, or encrypted. Displays an interactive histogram, detailed byte statistics (mean, median, mode), and top/bottom byte frequency tables - all processing is local in your browser, no signup required.

Upload any binary file and define a structure template with field types (uint8, uint16, uint32, uint64, int8, int16, int32, int64, float32, float64, string, hex, bytes, struct) at specific byte offsets. Includes 10 pre-built templates for BMP, PNG, JPEG, GIF, ELF64, WAV, ZIP, PDF, and WebP headers. Supports per-field endianness, nested sub-structures, and array fields. All processing is local in your browser - free online Binary Structure Parser, no signup required.

Upload any file or paste text to detect Byte Order Mark (BOM) at the start. Shows the BOM hex sequence, interpreted encoding, and endianness. Supports UTF-8, UTF-16 (BE/LE), UTF-32 (BE/LE), UTF-7, SCSU, BOCU-1, and GB-18030. Interactive hex dump with highlighted BOM bytes and a complete BOM reference table - all processing runs locally in your browser, no signup required.