Hztxt.shx !full! May 2026

You’ve seen the dialog box: "Specify font for HZTXT: " Or worse: The drawing loads, but all Chinese text is replaced with \U+FF1B codes or random Japanese-looking characters (because AutoCAD substituted bigfont.shx or chineset.shx incorrectly).

Never delete hztxt.shx . One day, an old drawing from 1999 will land on your desk, and only that humble stroke font will unlock its secrets. File checksum of a common version: Size: ~2,200,000 bytes (2.2 MB) Contains: ~6,763 Chinese characters (GB2312 Level 1) Design principle: 16x16 stroke grid, single-line, no fills. hztxt.shx

Enter the hero: (SHX Big Font files). Autodesk created a system where you could pair an English .shx font (for letters/numbers) with a "Big Font" .shx file (for East Asian characters). This split allowed efficient memory management. The Birth of hztxt.shx In the mid-1990s, a group of Chinese engineers, most notably Chen Bo (陈伯) and collaborators in the burgeoning Chinese CAD community, reverse-engineered the SHX format. Their goal was simple: create a single, lightweight, stroke-based (single-line) Chinese font that looked exactly like the Western txt.shx font. You’ve seen the dialog box: "Specify font for

Here is the full story of — a file that, while small, carries the weight of an entire era of digital design in China. The Legend of hztxt.shx : The Font That Built Chinese CAD Prologue: The ASCII Problem In the 1990s, Computer-Aided Design (CAD) software, led by AutoCAD from Autodesk, was becoming the global standard for engineering and architecture. However, Autodesk was an American company, and its default font file— txt.shx —contained only ASCII characters (English letters, numbers, and basic symbols). For Chinese users, this was a crisis. File checksum of a common version: Size: ~2,200,000 bytes (2

To write notes, dimensions, or specifications in Chinese, a CAD user would see only gibberish: ╩╓╗·╩╘╤Θ . The software lacked the thousands of Chinese character glyphs required.