Quick Look Previews

DevKnife includes a Quick Look extension for previewing developer files directly from Finder.

Select a supported file in Finder and press Space to open a preview without launching a full editor. This is useful when you want to quickly inspect data files, source code, HTTP request files, or color palettes while browsing a project folder.

Supported File Types

DevKnife provides Quick Look previews for:

JSON
YAML
TOML
XML
CSV
Markdown
HTTP Client .http files
GIMP Palette .gpl files
Adobe Swatch Exchange .ase files
Source code files

Source Code Previews

Source code files are shown with syntax highlighting.

DevKnife supports Quick Look previews for:

Assembly
C
C#
C++
Clojure
CSS, SCSS, Sass, and Less
Dart
Delphi/Object Pascal
Elixir
Erlang
Fortran
Go
Haskell
Java
JavaScript
Kotlin
Lua
Perl
PHP
Python
R
Ruby
Rust
Scala
Shell Script
SQL
Swift
TypeScript
Visual Basic
Zig

Using Quick Look

To preview a file:

Open Finder.
Select a supported file.
Press Space.

Finder opens the preview using DevKnife’s Quick Look extension when the file type is supported.

Privacy

Quick Look previews are generated locally on your Mac. DevKnife does not upload your files or send preview contents to external services.

Troubleshooting

If previews do not appear immediately after installing or updating DevKnife, try restarting Finder or reopening the app. macOS manages Quick Look extensions in the background, so it can occasionally take a moment for a newly installed extension to become available.