# graphviz 15.1.0

- Product: graphviz (https://whatsnew.fyi/product/graphviz)
- Vendor: graphviz
- Date: 2026-06-18
- Version: 15.1.0
- Original notes: https://gitlab.com/graphviz/graphviz/-/tags/15.1.0
- Permalink: https://whatsnew.fyi/product/graphviz/releases/15.1.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

See the CHANGELOG .

- **added** — Support new command line option `-Lm…` for controlling the m-limit when using the fdp layout algorithm
- **added** — Add new vt plugin option `-Tvt-8up2` for using Unicode octant characters to render 8-pixels-per-cell output
- **fixed** — Restore ability to build from source with `--disable-python` or `--disable-python3` flags
- **fixed** — Prevent Gvedit from leaving temporary files on disk when previewing

###### Added

- When using the fdp layout algorithm (`dot -Kfdp …` or `fdp …`), a new command
  line option `-Lm…` is supported for controlling the “m-limit”. See the man
  page for details about this option. #954
- The vt plugin has a new option for using Unicode octant characters to render
  8-pixels-per-cell output, `-Tvt-8up2`.

###### Fixed

- When building from source from a Git checkout, builds with
  `--disable-python`/`--disable-python3` once again work. This was a regression
  in Graphviz 14.1.3. #2839
- Gvedit no longer leaves temporary files on disk when previewing.