# Fonts Like PT Serif Caption

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

## Quick Answer

The closest open font to PT Serif Caption is DejaVu Math (similarity 77), then IBM Plex Serif and Source Serif 4. DejaVu Math 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 | **DejaVu Math** | 77 / 100 | OFL-1.1 | [/fonts/dejavu-math/](/fonts/dejavu-math.md) |
| #2 | **IBM Plex Serif** | 75 / 100 | OFL-1.1 | [/fonts/ibm-plex-serif/](/fonts/ibm-plex-serif.md) |
| #3 | **Source Serif 4** | 74 / 100 | OFL-1.1 | [/fonts/source-serif-4/](/fonts/source-serif-4.md) |
| #4 | **Cantata One** | 71 / 100 | OFL-1.1 | [/fonts/cantata-one/](/fonts/cantata-one.md) |
| #5 | **Merriweather** | 71 / 100 | OFL-1.1 | [/fonts/merriweather/](/fonts/merriweather.md) |
| #6 | **Charis SIL** | 71 / 100 | OFL-1.1 | [/fonts/charis-sil/](/fonts/charis-sil.md) |
| #7 | **Volkhov** | 70 / 100 | OFL-1.1 | [/fonts/volkhov/](/fonts/volkhov.md) |
| #8 | **Roboto Serif** | 70 / 100 | OFL-1.1 | [/fonts/roboto-serif/](/fonts/roboto-serif.md) |
| #9 | **PT Sans Caption** | 69 / 100 | OFL-1.1 | [/fonts/pt-sans-caption/](/fonts/pt-sans-caption.md) |
| #10 | **Montagu Slab** | 69 / 100 | OFL-1.1 | [/fonts/montagu-slab/](/fonts/montagu-slab.md) |
| #11 | **Brawler** | 69 / 100 | OFL-1.1 | [/fonts/brawler/](/fonts/brawler.md) |
| #12 | **Noto Serif** | 68 / 100 | OFL-1.1 | [/fonts/noto-serif/](/fonts/noto-serif.md) |

## Other Scripts With Similar Latin Letters

- **Noto Serif Todhri** (Todr): Similarity 71, licence OFL-1.1 - [/fonts/noto-serif-todhri/](/fonts/noto-serif-todhri.md)
- **Abyssinica SIL** (Ethi): Similarity 69, licence OFL-1.1 - [/fonts/abyssinica-sil/](/fonts/abyssinica-sil.md)
- **Markazi Text** (Arab): Similarity 69, licence OFL-1.1 - [/fonts/markazi-text/](/fonts/markazi-text.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/pt-serif-caption.json](/api/fonts-like/pt-serif-caption.json).