Download Free SHX Fonts – Professional AutoCAD Font Library for CAD Standards

This page provides a production-grade library of SHX fonts used in AutoCAD drafting environments where performance, consistency, and plotting quality matter.

Unlike TrueType fonts, SHX fonts are vector-based stroke fonts. They are the standard in engineering, BIM, and production drawings for one simple reason: they are predictable.

What SHX Fonts Really Are (And Why They Still Matter)

SHX fonts are stroke-based vector fonts, defined by lines and arcs—not filled shapes.

This means:

  • faster zoom / pan / REGEN
  • smaller DWG file size
  • clean vector PDF output

They are still the preferred choice for:

  • large projects
  • Xref-heavy environments
  • multi-user CAD standards

The Key Difference: SHX vs TTF (Critical)

SHX Fonts

  • no intrinsic thickness
  • stroke-based geometry
  • lineweight controlled externally

TTF Fonts

  • filled outlines
  • fixed visual thickness
  • can rasterize in PDFs

Lineweight Control (The Real Power of SHX)

SHX fonts do not have thickness.

Their appearance is controlled by:

  • layer color
  • plot style (.CTB / .STB)

Result:

  • same text style can print:
    • ultra-thin (0.13 mm)
    • bold (0.50 mm+)

This is impossible with TTF fonts.

How to Install SHX Fonts

Standard Method

  1. Copy .shx files into:
    • C:\Program Files\Autodesk\AutoCAD 20xx\Fonts
  2. Restart AutoCAD

More : How to Install SHX Fonts in AutoCAD (Step-by-Step Guide)

Professional Method (Recommended)

  1. Create folder:
    • C:\CADAuthority\Fonts\
  2. Add path in:
    • OPTIONS → Files → Support File Search Path

This allows:

  • easy migration between versions
  • centralized management

Assigning Fonts (STYLE Command)

  • Type STYLE
  • Create or edit a text style
  • assign SHX font

Used by:

  • TEXT
  • MTEXT

Reference: AutoCAD https://help.autodesk.com/view/ACD/

Big Fonts (Asian Languages Support)

To use Big Fonts:

  • enable “Use Big Font” in STYLE
  • assign second .shx file

Without this:

  • AutoCAD will not load extended characters

PDF Searchability (Modern Behavior)

Historically:

  • SHX text in PDFs was not searchable

Now:

  • enable “Include SHX text” during PDF export

Result:

  • searchable PDF
  • hidden text layer added

Special SHX Codes (Essential)

Use these codes in TEXT/MTEXT:

  • %%c → diameter (Ø)
  • %%p → plus/minus (±)
  • %%d → degree (°)

These are standard in engineering drawings.

Missing Fonts (FONTALT Strategy)

If a font is missing:

  • AutoCAD uses FONTALT

Recommended setting:

  • set FONTALT = simplex.shx

Avoid:

  • txt.shx (hard to read)

Advanced Standardization (acad.fmp)

The acad.fmp file allows:

  • automatic font substitution
  • mapping TTF → SHX
  • enforcing office standards

Used by:

  • CAD managers
  • large organizations

MTEXT Limitation (Bold / Italic Issue)

SHX fonts:

  • do NOT support bold/italic formatting via MTEXT buttons

Solution:

  • switch font:
    • Romans → Romand (bold effect)
    • Simplex → Italic

ETRANSMIT (Professional Requirement)

Never send a drawing with custom SHX fonts without:

  • ETRANSMIT

This ensures:

  • fonts included
  • no substitution issues

This is basic professional practice.

Standard & Technical SHX Fonts

  • Simplex.shx Industry standard. Single-stroke. Fastest and most reliable for annotations and dimensions.
  • Romans.shx Cleaner and more refined than Simplex. Preferred for general engineering documentation.
  • Romand.shx Double-stroke font providing visual weight. Used for titles and emphasis.
  • Romanc.shx Complex multi-stroke font for high-quality title blocks.
  • Romant.shx Serif version. Used in formal architectural documentation.
  • Italic.shx Slanted text for emphasis or technical differentiation.
  • Isocp.shx ISO-compliant font. Preferred for BIM and government projects due to strict readability standards.
  • Isocp2.shx Narrow ISO variant for tight spaces (tables, schedules).
  • Isoct.shx Slanted ISO font for technical labeling.
  • Complex.shx Dense font for high-quality text in presentation sheets.
  • Txt.shx Ultra-lightweight font. Used for background or non-critical data.
  • Monotxt.shx Fixed-width font. Ideal for tabulated data alignment.

Architectural & Handwriting SHX Fonts

  • Archstyl.shx Modern hand-lettered style for architectural drawings.
  • CityBlueprint.shx Classic blueprint lettering style.
  • CountryBlueprint.shx Softer version for residential projects.
  • Stylus.shx Clean handwriting font with good readability.
  • Hand1.shx Freehand look for conceptual work.
  • Scriptc.shx Complex script for decorative elements.
  • Scripts.shx Simpler cursive for legends and presentations.

Specialized Symbols & Engineering SHX Fonts

  • Gdt.shx Contains GD&T symbols. Essential for mechanical engineering. Without it, symbols display incorrectly.
  • Syastro.shx Astronomical symbols for mapping.
  • Symap.shx Infrastructure and mapping symbols.
  • Symeteo.shx Meteorological symbols.
  • Symath.shx Mathematical symbols.
  • Greek.shx Greek alphabet for scientific notation.

Workflow Standard (Recommended Setup)

Use:

  • 1 font for annotations → Simplex / Romans
  • 1 font for titles → Romand / Romanc
  • 1 font for symbols → GDT / Greek

Avoid mixing too many fonts.

Plotting Behavior

SHX fonts:

  • plot as vectors
  • produce sharp, lightweight PDFs

TTF fonts:

  • may rasterize
  • increase file size

Why Drawings Look Different on Another Computer

  • missing SHX fonts
  • FONTALT substitution
  • different text styles

Fix:

  • install fonts
  • standardize setup

FAQ – AutoCAD SHX Fonts

Why is my text printing too thin or too thick?

Lineweight is controlled by CTB/STB, not the font.

Why is text not searchable in PDF?

Enable “Include SHX text” in PDF export.

Why do symbols display incorrectly?

Missing GDT or symbol font.

Why does text look wrong on another PC?

Missing SHX font → substitution.

Should I always use SHX fonts?

For production drawings: yes.

Disclaimer

SHX fonts must be installed on all machines. Missing fonts will be substituted and may affect readability, layout, and plotting output.

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