Inspectors

Hexdump Viewer

Paste text, hex, or Base64 data and view it as a classic hexdump — the same format xxd produces on the command line. Each line shows the byte offset, 16 hex bytes, and the ASCII representation (with non-printable characters shown as dots). Useful for inspecting binary data, debugging encoding issues, or understanding the raw byte structure of text.

Hexdump Viewer — Display text, hex, or base64 data as a classic hexdump with offset, hex bytes, and ASCII

What it does

  • ▸Displays data as a hexdump with offset, hex bytes, and ASCII columns
  • ▸Accepts text, hex, or Base64 input
  • ▸Shows byte offsets in hex (00000000, 00000010, etc.)
  • ▸Non-printable bytes (0x00-0x1F, 0x7F+) shown as dots in the ASCII column
  • ▸Configurable bytes per line (8, 16, or 32)

Use cases

  • ▸Inspecting the raw bytes of a string to debug encoding issues
  • ▸Examining binary data from a file or network capture
  • ▸Understanding the byte-level structure of Base64-decoded data
  • ▸Comparing the hex representation of similar strings

How it works

1

Paste your data (text, hex, or Base64) into the input pane

2

Select the input format

3

The tool converts the input to bytes and formats it as a hexdump

4

Review the offset, hex, and ASCII columns in the output

Frequently asked questions

1What format is the hexdump in?

The classic xxd format: 8-digit hex offset, 16 hex bytes separated by spaces (with an extra space after the 8th byte), and the ASCII representation. This is the same format you get from running xxd or hexdump -C on the command line.

2Can I view the hexdump of a Base64 string?

Yes. Set the input format to Base64, paste your Base64 string, and the tool decodes it to bytes and displays the hexdump. This is useful for inspecting the contents of Base64-encoded data like JWTs or binary blobs.

3What are the dots in the ASCII column?

Dots represent non-printable bytes — control characters (0x00-0x1F), DEL (0x7F), and high bytes (0x80+). Printable ASCII characters (0x20-0x7E) are shown as-is. This makes it easy to spot text embedded in binary data.

Related tools

Hex ⇄ Text — Convert between text and hexadecimal bytes (UTF-8)

Hex ⇄ Text

Convert between text and hexadecimal bytes (UTF-8)

Base64 String Encode/Decode — Encode and decode Base64 strings (unicode-safe)

Base64 String Encode/Decode

Encode and decode Base64 strings (unicode-safe)

GZip Compress / Decompress — Compress text to gzipped Base64 or decompress gzipped data

GZip Compress / Decompress

Compress text to gzipped Base64 or decompress gzipped data

Protobuf / ASN.1 Decoder — Decode protobuf wire format (without schema) or parse ASN.1 DER/BER TLV structure

Protobuf / ASN.1 Decoder

Decode protobuf wire format (without schema) or parse ASN.1 DER/BER TLV structure

Use Hexdump Viewer offline in Devinity

All 95 tools run locally on your Mac. No internet required, no data sent to servers.

Download Devinity →