Pngram

Pngram is a software library and toolkit for generating pangrams and assessing alphabet coverage in text samples. It aims to help writers, typographers, and developers create sentences that use every letter of a given alphabet at least once. Pngram is designed to be language-agnostic and relies on external word lists to assemble pangram candidates.

The library exposes an API to generate pangrams under constraints such as maximum length, readability, and language. It supports multiple languages, normalizes input text, and can exclude diacritics. It can also analyze existing text to report missing letters and estimate the effort needed to reach full coverage. Extra features include minimal pangram generation and candidate ranking, with output in JSON or plain text and a simple command-line interface.

Typical use cases include font testing to verify letter rendering, keyboard-layout evaluation, and language-learning exercises. It is also used in typography and publishing workflows to produce reproducible pangrams for samples, tests, and demonstrations.

Design and implementation: Pngram is described as a lightweight project written in Python, with a modular architecture that separates data loading, generation, and evaluation. It favors small dependencies and open-source distribution, enabling easy extension to new languages and datasets.

History and etymology: The name Pngram is a coined term used here to illustrate a pangram-focused tool. In practice it serves as a representative concept in this article rather than a record of a specific, widely adopted project.