Cli on tigger.dev

DIY Audiobooks with make-audiobook

Tue, 03 Feb 2026 14:28:52 +0000

For six months in 2022, I stared at a hospital ceiling. Paralysed from the neck down, audiobooks weren't a luxury—they were my lifeline to the outside world.

That experience taught me something important: access to audio content shouldn't depend on whether a publisher has bothered to record it, whether you can afford the audiobook price, or whether you're willing to hand your reading habits to a cloud service.

The Problem

Most ebook-to-audio tools I found fell into three camps: cloud-based services that upload your books to someone else's servers, complex setups requiring GPU clusters and Python dependency hell, or clunky commercial software with subscription fees.

A file renaming tool for humans

Sun, 01 Feb 2026 00:00:00 +0000

I deal with a lot of PDFs. Medical invoices, insurance correspondence, bank statements, tax documents—they all arrive with names like e134-a1cf-4b4b-af65-ccf83c5270cb.pdf or Document(3).pdf or, my personal favourite, scan.pdf. Every. Single. Time.

So I started renaming files to something like 2025-09-30-125.00-rahona-clinic.pdf. Now I know what it is without opening the thing - an invoice, with the date and amount right there in the name. I'm halfway to the spreadsheet already. And thanks to ISO date format, they sort nicely too.

Image manipulation from the command line

Fri, 04 Jul 2025 18:17:43 +0100

Get an image's resolution

$ magick identify going-fishing.jpg
going-fishing.jpg JPEG 5422x3648 5422x3648+0+0 8-bit sRGB 12.2217MiB 0.000u 0:00.003

Convert an image to a different format

$ magick convert going-fishing.jpg going-fishing.png

Resize an image

$ magick convert going-fishing.jpg -resize 800x600 going-fishing-resized.jpg

Only specify width or height

$ magick convert going-fishing.jpg -resize 800x going-fishing-resized-width.jpg
$ magick convert going-fishing.jpg -resize x600 going-fishing-resized-height.jpg

By percentage

$ magick convert going-fishing.jpg -resize 50% going-fishing-resized-percent.jpg

Crop an image

$ magick convert going-fishing.jpg -crop 800x600+100+100 going-fishing-cropped.jpg

Rotate an image

$ magick convert going-fishing.jpg -rotate 90 going-fishing-rotated.jpg

Add a border to an image

$ magick convert going-fishing.jpg -bordercolor black -border 10x10 going-fishing-bordered.jpg

Add text to an image

$ magick convert going-fishing.jpg -gravity South -pointsize 36 -fill white -annotate +0+10 "Going Fishing" going-fishing-text.jpg

Convert an image to grayscale

$ magick convert going-fishing.jpg -colorspace Gray going-fishing-grayscale.jpg

Create a thumbnail

$ magick convert going-fishing.jpg -thumbnail 150x150 going-fishing-thumbnail.jpg

Combine multiple images into a single image

$ magick convert image1.jpg image2.jpg image3.jpg +append combined-horizontal.jpg
$ magick convert image1.jpg image2.jpg image3.jpg -append combined-vertical.jpg

Watermark an image

$ magick convert going-fishing.jpg watermark.png -gravity southeast -geometry +10+10 -composite going-fishing-watermarked.jpg

Filtering and searching in hledger

Wed, 19 Mar 2025 03:45:29 +0000

I am an advocate of plaintext accounting, and hledger is my go-to tool for this. A good summary of WTF and why on their landing page. All of the various bank accounts and cards I use have some sort of CSV or XML export function. Feeding these in to hledger gives me a powerful direct view on my finances that I can analyze in aggregate for budgeting and planning, but also zoom in to a specific transaction or range of transactions.