Hex Viewer
Upload any file and instantly view its raw binary contents as an interactive hex dump with side-by-side hexadecimal and ASCII columns. Search for byte patterns using hex notation (FF D8 FF) or text strings, paginate through files of any size, and inspect every byte - all processing is local in your browser for complete privacy. Free, no signup required.
Upload any file to view its contents as an interactive hex dump with side-by-side hex and ASCII representation. Search for byte patterns or text strings, scroll through pages, and select individual bytes.
Drop a file here or click to browse
Any file type accepted - no size limit
Upload any file to instantly view its raw binary contents. The hex dump shows three columns: the byte offset (left), the hexadecimal byte values (center, grouped in 16-byte rows), and the ASCII representation (right, with non-printable characters shown as dots). Use the search bar to find byte patterns by hex (e.g., "FF D8 FF" for JPEG files) or by ASCII text. Navigate between pages with the Previous/Next buttons and use the search result arrows to jump between matches. All processing is done locally in your browser - no data is uploaded to any server.
Why Use Our Hex Viewer?
Instant Binary File Inspection
Upload any file and instantly view its raw binary contents in a clean, interactive hex dump. Our Hex Viewer reads the file in your browser and displays the data immediately - no server uploads, no processing queues, no file size limits. Just drag, drop, and inspect.
Powerful Hex & Text Search
Search for byte patterns using hex notation (e.g., "FF D8 FF" for JPEG headers) or plain ASCII text. The viewer highlights all matching bytes in the hex and ASCII columns, shows result counts, and lets you jump between matches with previous/next navigation.
100% Private Browser Processing
Your files never leave your device. All hex parsing, search, and pagination happens locally in your browser using JavaScript. No data is uploaded to any server - complete privacy guaranteed for sensitive file inspection.
Pagination for Any File Size
Files of any size are supported with automatic pagination (1024 bytes per page). Navigate through pages with Previous/Next buttons, view the current byte range, and jump directly to search results - all without loading the entire file into memory at once.
Common Use Cases for Hex Viewer
Malware & Security Analysis
Security researchers and analysts can inspect suspicious files at the byte level to identify malicious patterns, embedded shellcode, or unusual file structures. Search for known malware signatures by hex pattern and examine file headers for anomalies.
File Format Reverse Engineering
Reverse engineers can study unknown or proprietary file formats by examining the raw binary structure. Identify magic bytes, understand data layouts, find string tables, and map out file format specifications through direct byte inspection.
Digital Forensics Investigations
Forensic analysts can examine evidence files at the binary level to recover hidden data, verify file integrity, identify file fragments, and search for incriminating text strings or byte patterns within binary evidence files.
Debugging Binary Data Issues
Developers debugging binary protocol implementations, file parser issues, or data corruption problems can inspect raw bytes to verify correct encoding, check byte ordering, and validate data structures against specifications.
Computer Science Education
Students learning about binary data representation, file formats, and low-level computing concepts can explore how different data types are encoded in memory. See exactly how text, numbers, and structures are stored at the byte level.
Embedded Systems Development
Embedded systems engineers can inspect firmware files, binary configuration blobs, and memory dumps. Verify correct byte ordering, check for expected header values, and search for known patterns in binary firmware images.
Understanding Hex Dump Viewing
What is a Hex Dump?
A hex dump (or hexadecimal dump) is a textual representation of binary data where each byte is displayed as a two-digit hexadecimal number. The dump is typically organized into rows of 16 bytes, with an offset column on the left showing the byte position within the file (in hex), the hexadecimal values in the center, and an ASCII representation on the right showing printable characters (with non-printable bytes rendered as dots). This three-column layout makes it easy to identify file headers, find patterns, and understand how data is structured at the binary level. Hex dumps are an essential tool for debugging, forensics, and reverse engineering because they reveal the exact content of a file regardless of its intended format or application.
How Our Hex Viewer Works
- Upload & Read: You upload any file by dragging and dropping or clicking to browse. The file is read as an
ArrayBufferin your browser using theFileReaderAPI - no data is sent to any server. - Display & Paginate: The raw bytes are divided into pages of 1024 bytes (64 rows × 16 bytes). Each row shows the offset, 16 hex byte values grouped in pairs, and the ASCII representation. You can navigate between pages using the Previous/Next buttons.
- Search & Navigate:The search feature supports two modes: hex search (space-separated hex bytes like "FF D8 FF") and ASCII text search. Matching bytes are highlighted in yellow across both the hex and ASCII columns. Use the arrow buttons to jump between consecutive matches.
Understanding Hex Dump Columns
- Offset Column (left): Shows the byte position within the file in 8-digit hexadecimal format. The first byte is at offset
00000000, the 16th byte is at0000000F, and so on. This makes it easy to locate specific positions within the file. - Hex Column (center): Displays 16 bytes per row as two-digit hexadecimal values (00-FF). Each byte occupies exactly two hex digits, making it easy to identify byte patterns like magic bytes, headers, and data structures. Bytes are grouped with consistent spacing for readability.
- ASCII Column (right): Shows the ASCII representation of each byte. Printable characters (ASCII codes 32-126) are displayed as their glyph, while non-printable bytes (control characters, high bytes) are shown as dots (.). This helps quickly identify text strings embedded within binary data.
Privacy, Security & Availability
The Hex Viewer processes all files entirely within your browser using client-side JavaScript. No file data is ever uploaded to any server - every byte stays on your device. There are no file size limits, no signup requirements, and no usage caps. The tool is 100% free to use with no hidden premium features. Whether you are inspecting a 1KB configuration file or a multi-gigabyte disk image, your privacy and security are guaranteed.
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Frequently Asked Questions About Hex Viewer
A hex viewer is a tool that displays the raw binary content of any file as hexadecimal values. Each byte in the file is shown as a two-digit hex number (00 to FF), organized into rows of 16 bytes. The tool also shows the byte offset position and an ASCII representation. Our Hex Viewer processes files entirely in your browser - upload a file and the viewer reads it locally to display the hex dump instantly.
Any file type is supported - images, documents, executables, archives, audio, video, firmware dumps, and more. The Hex Viewer treats all files as raw binary data and displays them byte by byte. Since no format-specific parsing is required, any digital file can be inspected regardless of its type or extension.
You can search using hex notation (e.g., "FF D8 FF" to find JPEG headers) or ASCII text. For hex searches, enter space-separated hex byte values. For text searches, just type the text you are looking for. Matching bytes are highlighted in yellow across both the hex and ASCII columns, with a result counter and navigation arrows to jump between matches.
There are no artificial file size limits. Since the tool processes files locally in your browser, the practical limit depends on your device memory. Most modern computers can handle files up to several hundred megabytes without issues. The tool uses pagination (1024 bytes per page) so you can navigate through even very large files efficiently.
The current Hex Viewer is a read-only viewer - you can inspect, search, and navigate through the binary data but you cannot edit bytes directly. For editing, we recommend using our Hex Editor (Basic) tool which allows real-time byte modification with insert/overwrite modes and file download.
Absolutely. The Hex Viewer processes everything locally in your browser using JavaScript. Your files are never uploaded to any server - all parsing, pagination, and search operations happen on your device. This ensures complete privacy for sensitive files such as proprietary binaries, forensic evidence, or personal data.
The Offset column (left) shows the byte position within the file in 8-digit hexadecimal. The Hex column (center) displays each byte as a two-digit hex value, with 16 bytes per row. The ASCII column (right) shows printable characters as their glyph and non-printable bytes as dots (.), making it easy to spot embedded text strings within binary data.
Yes! The Hex Viewer is 100% free to use with no signup, no account, no usage limits, and no hidden premium features. Inspect as many files as you need - completely free, forever. All processing is done in your browser with no server-side dependencies.