Gotenberg Files

New Features

Docker Image Variants

• Chromium-Only Image (gotenberg/gotenberg:8.30.0-chromium): Drops LibreOffice, python3, and hyphenation packages. ~30% smaller than the full image.
• LibreOffice-Only Image (gotenberg/gotenberg:8.30.0-libreoffice): Drops Chromium and its dependencies. ~38% smaller than the full image.

Pick the variant that matches your workload. The full image (gotenberg/gotenberg:8.30.0) still ships everything.

Leaner Docker Image

The full image is ~13% smaller than 8.29.0. The font stack was simplified from 30+ packages down to 8, covering Latin, Greek, Cyrillic, CJK, and most world scripts through Noto, plus color emoji.

Microsoft Core Fonts (ttf-mscorefonts-installer) are not shipped due to licensing constraints. The image includes metric-compatible replacements instead: Carlito for Calibri, Caladea for Cambria, and Liberation for Arial, Times New Roman, and Courier New. These preserve document layout in most cases.

Installing Additional Fonts

Build a custom Dockerfile to add fonts. Common scenarios:

Microsoft Core Fonts (you accept the Microsoft EULA):

:::docker
FROM gotenberg/gotenberg:8

USER root

RUN echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | debconf-set-selections \
    && apt-get update -qq \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends ttf-mscorefonts-installer \
    && rm -rf /var/lib/apt/lists/*

USER gotenberg

Specialized script fonts for richer glyph sets, better hinting, or traditional typefaces beyond the basic Noto coverage:

:::docker
FROM gotenberg/gotenberg:8

USER root

RUN apt-get update -qq \
    && DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
        fonts-hosny-amiri \
        fonts-thai-tlwg \
    && rm -rf /var/lib/apt/lists/*

USER gotenberg

Webhook

• Gotenberg-Webhook-Error-Url Now Optional: When Gotenberg-Webhook-Events-Url is set, Gotenberg-Webhook-Error-Url is no longer required. Error handling flows through the events URL instead. Gotenberg-Webhook-Error-Url is deprecated but continues to work.

Bug Fixes

• ExifTool Tag Filtering: Case-insensitive comparison and expanded blocklist for ExifTool metadata filtering. Excludes additional system tags while preserving safe derived tags.
• Regex Timeout: Added timeout to regex evaluation to prevent ReDoS on malformed patterns.

Chore

• Updated Go dependencies.