How to Convert Vector Letters into OTF (OpenType Font)

Source: Dev.to

What Is OTF?

OTF (OpenType Font)

• Supports advanced typography
• Works on Windows, macOS, Linux
• Commonly used in design software (Photoshop, Illustrator, Word)

OTF fonts store:

• Vector outlines of letters
• Spacing information
• Font metadata (name, style, author)

1. Create Vector Letters Correctly

Before using FontForge, ensure your vectors are font‑ready.

Rules for Vector Letters:

• Use SVG or EPS format
• One letter per file
• Paths must be:
  • Clean (no strokes, only fills)
  • No background rectangles

2. Create a New Font in FontForge

1. Open FontForge.
2. Choose File → New.

You’ll see a grid of empty boxes. Each box represents one character (glyph), e.g., slot “A” for capital A, slot “a” for small a. This grid maps vector shapes to keyboard characters.

3. Import Vector into a Glyph Slot

1. Double‑click the desired letter slot (e.g., A).
2. Go to File → Import.
3. Select your SVG/EPS file.

Your vector will appear inside the glyph editor.

4. Align and Scale the Letter

In the glyph window you’ll see reference lines:

• Baseline – where letters sit
• Ascender – top limit
• Descender – bottom limit

What to do:

• Scale the letter to fit naturally.
• Place it correctly on the baseline.
• Avoid touching the top too much.

Incorrect alignment can cause floating letters, uneven text, and poor line spacing.

5. Generate OTF File

1. After importing all letters, choose File → Generate Fonts.
2. Select OpenType (CFF) as the format.
3. Name your font and click Generate.

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How to Convert Vector Letters into WOFF (Web Open Font Format)

What Is WOFF?

WOFF (Web Open Font Format)

• A compressed font format designed for websites.
• Supported by all modern browsers.

Browsers cannot use SVG letters directly; they need WOFF or WOFF2. The conversion flow is:

Vector → Font (OTF/TTF) → WOFF

FontForge handles this internally.

1. Generate WOFF Using FontForge

If your font project is already created:

1. Go to File → Generate Fonts.
2. Select Web Open Font Format (WOFF).
3. Click Generate.