Category Archives: apps

PreviewApps updated

All three of my PreviewApps — PreviewMarkdown, PreviewCode and PreviewYaml — got big updates this week. Headline features: significantly improved font, style and colour selection, across-the-range stability improvements, and faster PreviewCode theme preview presentation.

Each app allows you to pick a different font to display Markdown, YAML and source code file previews. The last two previously offered a limited selection of monospace fonts — now you can choose any monospace font that’s installed on your Mac. Additionally, the styles available for each font — regular, italic, bold, condensed, heavy and so on — can be selected separately:

Select any monospace font installed on your Mac…
…and select from among a font’s available styles

PreviewMarkdown uses monospace fonts for code blocks and proportionally spaced fonts for all other text. Again, you can now pick from any font of those types installed on your computer, and apply any of the available styles.

PreviewMarkdown and PreviewYaml use colour to highlight different parts of the presented file content: YAML keys, for instance, and code blocks in Markdown. Earlier versions provided a set of pre-defined colours, but some users wanted to apply different colours, so the new releases provide colour selection through the standard macOS colour picker:

Choose text colours with the macOS picker

Additionally — because it was requested — you can now pick a separate colour for headings to help them stand out even more.

These two PreviewApps were designed to provide simple, straightforward previews, so the range of customisation is intentionally limited. macOS’ QuickLook facility is meant for glances as files rather than content consumption, after all. So there’s less customisation on offer than a reader app might provide. That said, there is demand for deeper preview customisation, the feedback I’ve had via the apps themselves and the Mac App Store, so that’s on my list to add to a future release.

Speaking of feedback, please do keep your suggestions and bug reports coming in. Go something to post? Use the Send Feedback button in the apps’ main window.

Incidentally, for those of you asking about images in previews, that’s in the pipeline. Watch this space.

All three PreviewApps are available from the Mac App Store:

Looking for syntax highlighted QuickLook code previews? Look no further

I’d like to introduce you to the latest member of the PreviewApp family: PreviewCode, which provides syntax-coloured QuickLook previews and Finder icon thumbnails for over 50 programming languages, including Swift, Objective-C, C++, Rust, JavaScript and Python, and data file types for macOS. You can choose to preview your source code any of 100 dark and light themes.

Previewed code courtesy of PreviewCode
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MNU now supports Mac terminal emulator iTerm2

MNU, my macOS menu bar utility that lets you call up regularly used command line operations and more, now supports iTerm2, the popular alternative to macOS’ own Terminal app.

MNU in action
MNU in action
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Crop picture files with confidence and pixel-precise offsets, using sips and imageprep

I recently had a rather large number of screenshots to process: specifically to crop them down to a small area about a third of screen width in and two-thirds of its height down. I could have done this manually, but it’s easy enough to make mis-crops when you’re cropping a couple of images by eye, let alone a 100 or so. The solution? Get your Mac to do it for you. Here’s how.

imageprep 6.30
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Looking for YAML macOS QuickLook file previews? With PreviewYaml 1.0.0, you got ’em!

Last week I announced the release of a new version of PreviewMarkdown that will preview YAML front matter in Markdown files. Work on that release prompted me to code a new app that enables QuickLook previews and Finder icon thumbnails of YAML files.

QuickLook previews and icon thumbnails of YAML files can now be yours
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Fontismo updated: more fab fonts for iOS folk

A new version of Fontismo, my iOS app that lets you install a selection of fonts on your iPhone or iPad, is now available.

The fontismo logo
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How to share preferences between macOS/iOS apps

A couple of macOS releases or so ago, Apple introduced app extensions: self-contained modules that are bundled within apps to deliver functionality to the wider operating system. But how do apps and their extensions share information between themselves, in particular users’ preferences?

PreviewMarkdown’s new Preferences sheet
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Oi, app makers, no! Enough Markdown monkey business!

PreviewMarkdown, my modern QuickLook plug-in for Markdown files, was recently updated to version 1.1.4. It was a minor change, which is why it wasn’t announced here, but the reason for the update may interest to anyone keen to understand the workings of macOS. It also highlights some inconsiderate behaviour on the part of some Mac software developers.

PreviewMarkdown, the markdown file viewer
PreviewMarkdown relies on known Markdown file UTIs
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