Fix Missing & Broken CAD Fonts
Scan a DXF drawing for its text styles, spot the fonts that are likely missing on your system, and replace them with a standard font - so garbled and blank text renders correctly again.
Key Features
Scan Text Styles
Every text style is read from the DXF STYLE table with its primary font and big font, so you can see exactly what a drawing expects at a glance.
Replace Fonts
Swap any font reference - SHX or TTF - with a standard font across every text style, and all text that uses it updates at once.
Fill Missing Fonts
Text styles that have no font set at all are filled with a font you choose, instead of silently falling back and rendering blank or garbled.
Detect Problems
Non-standard font names and text entities that reference a style not defined in the file are flagged, so you always know exactly what to fix.
Batch Workflow
Scan up to 10 DXF files at once, define one set of replacement rules, and download every fixed file individually or as a ZIP archive.
Private by Design
Everything runs locally in your browser - drawings are never uploaded, stored, or shared with anyone.
About CAD Font Repair
Garbled text in a CAD drawing is usually a font problem, not a geometry problem. Every drawing references its text through named styles, and each style points at a font file. When that font is missing on the machine opening the drawing - a custom SHX that was never distributed, an old TTF, or a full file path that no longer exists - the text falls back to a default font or renders as question marks. This tool reads the font references in a DXF, flags the ones most likely to be missing, and lets you rewrite them to a font that everyone has. Text position, size, and geometry never change - only the typeface.
How to Repair a CAD Font
Four quick steps to fix garbled text in a DXF drawing.
Drop your DXF file
Drag a DXF drawing onto the upload area - text styles are scanned automatically. Up to 10 files at once.
Review the scanned styles
Each text style shows its font. Green styles use standard fonts; amber fonts may be missing on your system; red styles have no font at all.
Set replacement rules
Add a rule to swap a font, or use the one-click button to add rules for every flagged font. Leave the Replace field empty to fill styles that have no font.
Apply and download
Download the fixed file, or apply the rules to every file and grab a ZIP archive. The rewritten file opens with the new fonts.
Good to Know
Fonts are flagged as may be missing when their name is not in the standard AutoCAD SHX or common TTF lists - a custom font you have installed will be flagged too, and that is fine. Replace only the fonts that actually show garbled text. Replacing a font changes the typeface but never the text content, height, or position. DWG files are binary and are not supported: convert to DXF first with the DWG to DXF tool, then fix the fonts here.