# Fonts Like Kaisei Opti

12 open fonts whose letters are closest to Kaisei Opti, ranked by a glyph comparison. All free for commercial use.

## Quick Answer

The closest open font to Kaisei Opti is Frank Ruhl Libre (similarity 75), then STIX Two Text and Lora. Frank Ruhl Libre is released under the SIL Open Font License 1.1 and is free for commercial use.

## Ranked Open Lookalikes (12 Fonts)

| Rank | Font | Similarity Score | Licence | Details |
| :--- | :--- | :--- | :--- | :--- |
| #1 | **Frank Ruhl Libre** | 75 / 100 | OFL-1.1 | [/fonts/frank-ruhl-libre/](/fonts/frank-ruhl-libre.md) |
| #2 | **STIX Two Text** | 74 / 100 | OFL-1.1 | [/fonts/stix-two-text/](/fonts/stix-two-text.md) |
| #3 | **Lora** | 71 / 100 | OFL-1.1 | [/fonts/lora/](/fonts/lora.md) |
| #4 | **Noto Serif JP** | 71 / 100 | OFL-1.1 | [/fonts/noto-serif-jp/](/fonts/noto-serif-jp.md) |
| #5 | **Source Serif 4** | 70 / 100 | OFL-1.1 | [/fonts/source-serif-4/](/fonts/source-serif-4.md) |
| #6 | **Charis SIL** | 70 / 100 | OFL-1.1 | [/fonts/charis-sil/](/fonts/charis-sil.md) |
| #7 | **Libre Caslon Text** | 70 / 100 | OFL-1.1 | [/fonts/libre-caslon-text/](/fonts/libre-caslon-text.md) |
| #8 | **Brygada 1918** | 70 / 100 | OFL-1.1 | [/fonts/brygada-1918/](/fonts/brygada-1918.md) |
| #9 | **Wittgenstein** | 70 / 100 | OFL-1.1 | [/fonts/wittgenstein/](/fonts/wittgenstein.md) |
| #10 | **Hedvig Letters Serif** | 70 / 100 | OFL-1.1 | [/fonts/hedvig-letters-serif/](/fonts/hedvig-letters-serif.md) |
| #11 | **Judson** | 69 / 100 | OFL-1.1 | [/fonts/judson/](/fonts/judson.md) |
| #12 | **Libre Baskerville** | 69 / 100 | OFL-1.1 | [/fonts/libre-baskerville/](/fonts/libre-baskerville.md) |

## Other Scripts With Similar Latin Letters

- **UoqMunThenKhung** (Hant): Similarity 80, licence OFL-1.1 - [/fonts/uoqmunthenkhung/](/fonts/uoqmunthenkhung.md)
- **Jomolhari** (Tibt): Similarity 70, licence OFL-1.1 - [/fonts/jomolhari/](/fonts/jomolhari.md)
- **Taviraj** (Thai): Similarity 69, licence OFL-1.1 - [/fonts/taviraj/](/fonts/taviraj.md)

## Scoring Method

62 letters and digits (A-Z a-z 0-9) rendered at 160px cap height on a 32x32 grid with 3px gaussian blur, combined with edge-orientation texture (15% weight). Scores are normalized so that 0 represents an average pair of fonts across the 1571 compared fonts, and 100 represents identical letter shapes. Computed on 2026-10-22 using glyph-shape + edge-texture v2.

## Machine API

JSON representation available at [/api/fonts-like/kaisei-opti.json](/api/fonts-like/kaisei-opti.json).