• Restore PreviewMarkdown’s dark-on-white thumbnails that were made modal by macOS 26.1. • Add .LIS as a Basic file extension for Amstrad NC100 users. • Add .TPL as an OPL file extension for Psion users. • Fix handling of Psion .OPL files with embedded binary data. • Fix the link to online help. • Fix main window name in Window menu.

• Tahoe support phase II: adjust PreviewMarkdown’s Settings UI for the new design style.

• Welcome, macOS 26. We’ve started to support you with a new glassy icon and menu icons.

• We’ve twisted QuickLook’s arm into presenting a much larger preview window. This will now be scaled to a proportion of the screen you’re working on. • We’ve added 3x images to the main app for a better appearance on hi-res displays.

• We’ve added support for Psion’s .OPL and .OPA Organizer Programming Language (OPL) because the guys asked nicely.

• Textual corrections.

• We’ve brought our new, cross-the-range UI design to PreviewCode. • You asked for it, you got it: code can now be displayed with line numbers. Just flip the switch in the settings. • Add a small whitespace margin around previews. • We’ve taken the opportunity to spruce up the graphic design of the What’s New panel.

• Add .xlf (XML Localization Interchange File Format) file support.
 • Add .tmx (Translation Memory eXchange) file support.

• Add .xmp (Extensible Metadata Platform) file support. • Add .dop (DxO PhotoLab sidecar) file support. • Add .strings (Apple Xcode strings) file support.

• Support macOS 15's new org.lua (Lua), org.tug (LaTex, Tex), and org.clojure (Clojure) language UTIs. • Restore .conf preview functionality from PreviewText. • Remove links to deprecated PreviewText 1.x and PreviewYaml 1.x.

• Improve preference change handling. • Update highlighting code. • Remove unwanted grey line at the top of thumbnails. • Under the hood improvements.

• Revise thumbnailer to improve memory utilization and efficiency.

• Add the 'com.microsoft.typescript' UTI. • Fix MIA What’s New dialog. • Mitigate WebKit ‘white flash in dark mode’ on What’s New dialog.

• Support automatic dark/light theme application based on macOS’ UI mode. • Add line spacing control.

• Support Elm .elm files. • Stop attempting to preview .scpt binary AppleScript files. • Under-the-hood improvements.

• Allow code in previews to be selected and copied. • Support .gml GML (GameMaker Language) files. • Support for .vue Vue.js files. • Support for Xcode .entitlements, .xib and .storyboard files. • Update to use HighlighterSwift 1.1.1.

• Add link to PreviewText. • Better menu handling when panels are visible. • Better app exit management. • Bug fixes.

• Add support for the C# UTI com.microsoft.c-sharp. • Add support for makefiles

• Add link to PreviewJson

• Initial support for non-utf8 source code file encodings. • Support XML Apple property list files (.plist). • Support the public.lua-script UTI.

• Support .cs C# extension. • Fix ARM assembly file display. • Fix operation of Preferences’ font style popup.

• Support environment .env files. • Support CMake .cmake files. • Support Terraform variable .tfvars files. • Support AsciiDoc .adoc, .asciidoc and .asc files. • Support .conf, .cf, .cfg, .ini and .rc config files • Fix Haskell .hsl extension. • Fix x86 .nasm preview. • Change ActionScript supported extension to .actionscript to avoid clash with AppleSingle .as. • Remove Lisp .cl — clash with OpenCL source. • Remove Lisp .l — clash with Lex source. • Remove F# .fs — clash with OpenGL Fragment Shader source. • Remove Dylan .dylan and .lid extensions.

• Support HashiCorp Terraform .tf files. • Disable file-type thumbnail tags under macOS 12 Monterey to avoid clash with system-added tags.

• Improved monospace font and style selection. • Faster theme preview presentation. • Accelerate the loading of the Preferences panel loading, especially on Intel Macs. • Other UI improvements. • Fixed a rare bug in the previewer error reporting code. • Correct links to other PreviewApps.