This repository aims to collect the smallest possible syntactically valid files in different programming/scripting/markup languages.

It all started with a blog post on the smallest possible HTML/XHTML files...

Pull requests welcome!

– Mathias

To the extent possible under law, the author has waived all copyright and related or neighboring rights to this work.

• bzip2 .bz2
• gzip .gz with a filename
• Roshal archive .rar 1.4 4 5
• Tape archive .tar
• ZIP .zip

• MPEG-1 Audio Layer III .mp3
• Waveform Audio File Format .wav

• Compiled HTML help .chm
• Portable Document Format .pdf
• Rich Text Format .rtf
• Window Metafile .wmf

• Dolphin
• DOS Command file .com (empty), DOS Executable .exe, New Executable NE .exe, Linear Executable LX .exe
• Executable and Linkable Format .elf
• JVM class .class
• Mach-O (padded)
• Portable Executable PE .EXE (XP only)
• Small Web File/Shockwave Flash .swf
• WebAssembly .wasm

• Bitmap image file/Device Independent Bitmap .bmp
• Better Portable Graphics .bpg
• DICOM/Digital Imaging and Communications in Medicine .dcm
• Graphics Interchange Format .gif (transparent)
• High Efficiency Image File
• ICO file format .ico/.cur
• JPEG File Interchange Format .jpg/.jpeg
• JPEG 2000 .jp2
• Netpbm Portable BitMap Format .pbm (binary) Portable GrayMap Format .pgm (binary) Portable PixMap Format .ppm (binary)
• Portable Network Graphics .png (truncated)
• Multiple-image Network Graphics .mng
• Tagged Image File Format .tif
• Truevision Advanced Raster Graphics Adapter/TARGA .tga
• WebP .webp
• X-bitmap .xbm

• ada .adb
• awk .awk
• batch
• brainfuck
• c .c
• c .h
• C# .cs
• C++ .cpp
• clojure
• clojure
• clojurescript
• cobol
• Coffeescript
• fortran-77 .f
• fortran-90 .f90
• go
• Java .java
• JavaScript .js
• lua
• Makefile
• Nim .nim
• objective-c .m
• Objective CAML .ml
• pascal .pas
• perl .pl
• PHP: Hypertext Preprocessor .php
• Python .py
• Ruby .rb
• shell .sh
• swift .swift

• JavaScript Object Notation .json (with padding .p)
• Markdown .md
• Scalable Vector Graphics .svg
• toml
• YAML Ain't Markup Language .yaml/.yml
• Extensible Hypertext Markup Language .xhtml (basic-1.0) (1.0-frameset) (1.0-strict) (1.1) (basic-1.1) (5)
• Extensible Markup Language XML 1.0 (valid) 1.1 (1.1-valid)
• Hypertext Markup Language (2.0) (3.2) (4.0-strict) (4.01-strict) (4.01-frameset) (4.01-transitional) (5) iso-html

• Audio Video Interleave .avi
• Flash Video .flv
• Mpeg4 .mp4 (with audio)
• WebM .webm
• WindowsMediaVideo .wmv

• chicken

• crystal

• Cascading Style Sheets .css

• eiffel

• elixir

• Git commit

• groovy

• haskell_loop

• haskell_term

• i

• International Color Consortium profile .icc

• inform-6

• intercal

• jess

• malbolge

• cache manifest .appcache

• opa

• promela

• scala

• story

• tads-3

• typescript

• vertex-shader

• whitespace