About
AppStream is a metadata specification which permits software components to provide information about themselves to automated systems and end-users before the software is actually installed. appstream-generatorThetool generates AppStream metadata from the repositories of a software distribution. It currently supports the following repository formats / distributions: Debian, Ubuntu, Arch Linux, RPM-MD (Fedora, Mageia). appstream-generatorThe generator will produce AppStream catalog metadata files in the AppStream YAML or XML format to be shipped to users, as well as a detailed HTML report about found components and HTML and JSON reports on issues detected with the scanned metadata. It reads .desktop files as well as metainfo files, renders fonts, scales images, caches screenshots etc. to produce high-quality metadata for AppStream based software centers to consume. Usually,is integrated with the existing software build & packaging workflow of a distribution.
Changelog
Notes This release allows writing your configuration in YAML, switches the default icon format to JPEG-XL (with an option to set it to PNG, globally or per-suite) and stops processing TIFF/BMP/XPM images. ASC_NO_SANDBOX=1Please note that media processing is now lightly sandboxed on Linux on machines that have the Landlock LSM available. Setting theenvironment variable will disable the sandbox. Features Bugfixes Miscellaneous Contributors Gleb Popov, Joey Riches, Matthias Klumpp, Nathan Pratta Teodosio - Store statistics data in the original JSON format again - Serve statistics file in compressed form only - Officially support YAML as configuration file format - Port logging to Quill - Port to the libappstream-compose 1.2 - Switch media image default to JPEG-XL - Move statistics data into a separate database - engine: Make produced icon tarballs deterministic and only contain one format - Generate more detailed, fine-grained statistics for better overview pages - Drop flot & jquery, vendor uplot & highlight.js, drop NPM - Rebuild the HTML report pages on uPlot and the new statistics - reports: html: Create nicer frontpage as well, using tiles for the suites - reports: Don't reference index.html explicitly anymore in HTML reports - reports: Make HTML pages a single-column layout and center it - Ensure components and hints result files are always deterministic - freebsd: little fixes for the packageForFile() code path - debian: Prevent deadlock when getFileData() triggers a package download - debian: Use a checksum instead of mtime to detect index changes - rpmmd: Fix package descriptions being dropped from generated metadata - IconHandler: set the extra prefix when creating a builtin hicolor theme - zarchive: Ensure parent directories are created for empty directories - Don't append section to origin if it's empty - Fix nondeterministic output when two packages claim the same metadata - Streamline hint JSON creation to not duplicate the schema in two places - Properly use a system copy of backward-cpp - Ensure a UTF-8 locale is enforced properly on startup - zarchive: Confine archive extraction to the destination directory - zarchive: Make temporary extraction behave like reading the archive directly - Fix icons randomly missing from the generated icon tarballs - Mention the source icon name when an icon is rejected (instead of the target name) - Fix memory leak in intermediate metadata validation - Refuse to register empty GCIDs in the ownership registry - Don't pile on error hints if a component was already rejected for icon issues - report: Fix hint accounting and global component statistics - Fix potential crash when statistics arrive out of order - Copy base static data when publishing a HTML report for a different template - Ensure the temp dir is safely created and shared with compose - Double-quote strings in YAML header - ci: Build on Debain & its derivatives using debspawn - ci: Bump Ubuntu version, update dependencies - docs: Port manpage to DocBook 5 - Add small helper webserver to test HTML output locally easier - snap: Update to new core snap - snap: Simplify packaging and make it build on core26 - snap: Amend libfyaml's install prefix - snap: Fix missing screenshots due to GdkPixbuf error - meson: Simplify template installation - Add security policy - Add fd.o code of conduct
Additional information
- Developer
- Matthias Klumpp
- License
- LGPL-3.0+
- Category
- To Classify
- Size
- 5.1 MB
- Homepage
- https://github.com/ximion/appstream-generator
- Available via
- Flathub (Flatpak), Snap Store (stable build), Debian, Ubuntu, Fedora, Arch Linux, Alpine Linux, Solus
- Catalog data as of
- 8/31/2026 (dataset snapshot date — per-app update dates aren't tracked yet)