Metaflop

Spec sheet

What it does

Metaflop is a web application for modulating and customizing fonts using Metafont.Read 9 Oct 2026 · metaflop.com

Purpose

Metaflop is a web application for customizing fonts with Metafont by adjusting sliders or numeric parameters.Read 10 Oct 2026 · metaflop.com

Support

For parameter guidance, the FAQ recommends enabling the Modulator's anatomy preview to see an overview of specific font parameters.Read 9 Oct 2026 · metaflop.com

Adjuster character coverage

MF Adjuster has 256 T1-encoded characters supporting many European languages written in Latin script.Read 9 Oct 2026 · metaflop.com

Adjuster design

MF Adjuster follows a strict grid, uses no curves, and offers a reduced set of parameters.Read 9 Oct 2026 · metaflop.com

Automated generation

Metaflop automates repetitive font-generation tasks in the background.Read 9 Oct 2026 · metaflop.com

Browser support

The webfont-based preview is not supported in older browsers.Read 10 Oct 2026 · metaflop.com

Download limit

Metaflop does not support downloading a Metafont file; it points users to the Metafonts’ source code on GitHub.Read 10 Oct 2026 · metaflop.com

Downloads

Generated fonts can be downloaded as a webfont package or an OpenType PostScript font (OTF).Read 10 Oct 2026 · metaflop.com

Draft sharing

Drafts cannot be saved online, but users can copy a share URL and reopen it later to restore a draft.Read 10 Oct 2026 · metaflop.com

Font generation

The Modulator automates repetitive tasks while users adjust typeface parameters.Read 10 Oct 2026 · metaflop.com

Font library

The site offers the Adjuster, Bespoke, Fetamont, and Funtauna Metafonts.Read 10 Oct 2026 · metaflop.com

Font licensing

Generated outline fonts are licensed under the SIL Open Font License v1.1, which the FAQ says allows free download.Read 9 Oct 2026 · metaflop.com

Licensing

Generated outline fonts use the SIL Open Font License 1.1, which permits commercial use and requires derivative works to remain under the same license.Read 10 Oct 2026 · metaflop.com

Makers

Alexis Reigel is a co-founder and developer, and Marco Müller is a co-founder and designer.Read 10 Oct 2026 · metaflop.com

Modulator controls

The Modulator includes controls for dimensions, proportions, shape, optical corrections, glyphs, and a chart preview.Read 10 Oct 2026 · metaflop.com

Parameter preview

The anatomy preview provides an overview of specific font parameters.Read 10 Oct 2026 · metaflop.com

Performance

Font parameter changes are calculated on the server, and preview speed depends on server activity and the internet connection.Read 10 Oct 2026 · metaflop.com

Preview processing

Each parameter change is calculated on Metaflop's server, which returns a webfont used to render the preview.Read 9 Oct 2026 · metaflop.com

Project license

The project source code and Metafonts use the GNU General Public License v3.0, which allows commercial use subject to its source-sharing terms.Read 10 Oct 2026 · metaflop.com

Saving drafts

Metaflop does not support saving drafts online; users can restore a draft by saving and reopening its share URL.Read 9 Oct 2026 · metaflop.com

Source licensing

The project source code and Metafonts use the GNU General Public License v3.0, which allows commercial use under its terms.Read 9 Oct 2026 · metaflop.com

Team

The About page identifies Alexis Reigel and Marco Müller as Metaflop co-founders.Read 9 Oct 2026 · metaflop.com

Unsupported export

The FAQ says Metaflop does not support downloading a Metafont file, though source code for its Metafonts is available on GitHub.Read 9 Oct 2026 · metaflop.com

Visual controls

The Modulator lets users change font parameters with sliders or numeric values without writing Metafont code.Read 9 Oct 2026 · metaflop.com

Where Specifiction places it

• Font Design Software#26 of 337.1