rsms/inter

"f" ascender blurry at ~20 ppem in hinted TTF's

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#355 opened on Mar 2, 2021

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Description

The ascender of "f" in hinted TTF's renders blurrier than in several other hinted sans-serif fonts at around 20–24 ppem.

Hinted Inter v3.015;git-7f5c04026 in Chrome 88 on Win10: For comparison, left to right: Inter Regular 21 ppem, Inter Medium 20 ppem, Recursive Sans Linear Static Regular 20 ppem, Plex Sans Text 21 ppem, Work Sans Medium 21 ppem:

image

Contributor guide

Research direction
Examine the 'f' glyph's TrueType hinting instructions and compare with other similar glyphs. Check the ppem range 20-24 for hinting issues.
Tech stack
python
Domain
design
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Font hintingTrueTypeGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35