Dataset Card for OpenMoji

Dataset Summary

OpenMoji 17.0.0 contains 4,495 Unicode and custom emoji and icon entries, including extras-openmoji, extras-unicode, and skin-tone variants. Each row pairs upstream metadata with color and black SVG source text and 618 × 618 PNG images. SVG generation and understanding are primary uses; the PNG images are included alongside each SVG.

Dataset Structure

Data Instances

The dataset has one configuration and one train split. Load the source files through the local loader:

import datasets as ds

dataset = ds.load_dataset(
    "datasets/OpenMoji/OpenMoji.py",
    trust_remote_code=True,
)

Each row represents one entry in the release metadata, matched to its SVG and PNG files by hexcode.

{
  "hexcode": "1F600",
  "emoji": "😀",
  "group": "smileys-emotion",
  "annotation": "grinning face",
  "tags": ["grinning", "happy", "smile"],
  "svg_color": "<svg ...>",
  "svg_black": "<svg ...>",
  "image_color": "<Image: 618 × 618 PNG>",
  "image_black": "<Image: 618 × 618 PNG>"
}

Data Fields

Field	Type	Description
hexcode	string	Unique OpenMoji code used to join metadata and assets.
emoji	string or null	Emoji character, or null when the release value is empty.
group	string	Upstream emoji group.
subgroups	string	Upstream subgroup.
annotation	string	Upstream short description.
tags	list[string]	Comma-separated upstream tags, trimmed and empty items removed.
openmoji_tags	list[string]	Comma-separated OpenMoji tags, trimmed and empty items removed.
openmoji_author	string	OpenMoji artwork author.
openmoji_date	string	Upstream ISO date string.
skintone	string or null	Skin-tone value, or null when empty.
skintone_combination	string or null	Skin-tone combination, or null when empty.
skintone_base_emoji	string or null	Base emoji for a skin-tone variant, or null when empty.
skintone_base_hexcode	string or null	Base hexcode for a skin-tone variant, or null when empty.
unicode	string or null	Upstream Unicode value normalized to a string, or null when empty.
order	int32 or null	Upstream display order, or null when empty.
svg_color	string	Raw UTF-8 color SVG source.
svg_black	string	Raw UTF-8 black SVG source.
image_color	Image	Color artwork as a 618 × 618 PNG.
image_black	Image	Black artwork as a 618 × 618 PNG.

Data Splits

The pinned release provides no train, validation, or test partition. The loader exposes all 4,495 release entries in a single train split without filtering.

Split	Rows
train	4,495

Dataset Creation

Source Data

The loader downloads the four SVG and 618 × 618 PNG archives and data/openmoji.json from upstream tag 17.0.0. It joins each JSON record to the flat <HEXCODE>.svg and <HEXCODE>.png archive members using hexcode. The release includes standard Unicode emoji, extras-openmoji, extras-unicode, and skin-tone variants.

No rows are filtered. Empty upstream scalar strings become null; comma-separated tag values become trimmed lists with empty items removed. Numeric or string Unicode values are converted to strings, and order values are converted to int32.

Considerations for Using the Data

OpenMoji primarily provides SVG vector artwork for generation and understanding tasks; the matching raster images support image-based use. The metadata includes English annotations and tags. Skin-tone variants should be interpreted as variants of the same base emoji where the corresponding base fields are populated.

Additional Information

Licensing Information

OpenMoji graphics are licensed under CC BY-SA 4.0. The upstream project requests this attribution:

All emojis designed by OpenMoji – the open-source emoji and icon project. License: CC BY-SA 4.0

The upstream repository's code is licensed under LGPL-3.0; this dataset contains the graphics and metadata, not the upstream code.

Citation Information

The citation follows upstream CITATION.cff; the version-specific Zenodo record identifies release 17.0.0.

@misc{openmoji,
  author = {Groß, Benedikt and Utz, Daniel and The OpenMoji Contributors},
  title = {OpenMoji},
  year = {2026},
  version = {17.0.0},
  doi = {10.5281/zenodo.19704720},
  url = {https://doi.org/10.5281/zenodo.19704720}
}

Contributions

Thanks to OpenMoji and its contributors for creating and releasing the artwork and metadata.