---
name: "hyperxmp-add-bytecount"
section: "1"
platform: "linux"
package: "texlive-doc"
version: "2026.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/hyperxmp-add-bytecount"
---

# hyperxmp-add-bytecount(1)

adds/updates byteCount specification in XMP packet in PDF file.

## NAME

hyperxmp-add-bytecount - adds/updates byteCount specification in XMP packet in PDF file.

## SYNOPSIS

**hyperxmp-add-bytecount** \[*options*\] *filename.pdf*...

## DESCRIPTION

**hyperxmp-add-bytecount** adds/updates the `byteCount` specification in the XMP packet in a PDF file(s), with `byteCount` = file size. The XMP packet needs to be of, or compatible with, the format produced from a document that uses the LaTeX hyperxmp package ⟨https://ctan.org/pkg/hyperxmp⟩.

If no XMP packet of a compatible form is found in the PDF file, no change is made to the file.

## OPTIONS

- **-help**

  Write usage summary and exit.

- **-version**

  Output version information and exit.

## BUGS

Email bug reports to John Collins ⟨jcc8@psu.edu⟩ and/or Scott Pakin ⟨scott+hyxmp@pakin.org⟩.