PostgreSQL consulting.

Performance work, migrations, upgrades and high availability for teams whose database has stopped being boring - plus assorted development projects.

Applications I’ve built!

13 Bricks Markdown Converter

For macOS · Mac App Store

Read, convert and export Markdown documents written anywhere. Files from Windows, files with a byte-order mark and tab-indented files all render correctly, list items hold real content instead of breaking in two, and every heading gets a unique anchor so repeated section names each jump to the right place.

Maths- and diagram-heavy documents open in a fraction of a second. VoiceOver announces diagrams and charts and the document is a proper landmark. "Block external images" applies to exports as well as the viewer, so exported PDF, HTML and EPUB carry no remote URLs and a PDF export makes no network request while it renders.
QR Creator

For iPhone and iPad · App Store

Beautiful QR codes, built to scan - websites, Wi-Fi, contacts, events, social profiles and more. Style them with colours, a centre logo, frames and 92 shapes (34 of them animals), then export PNG, PDF or SVG. Every feature is free, it works offline, and the app collects no data. More about QR Creator.