Make Thumbnails of PDF Pages with ImageMagick

All my talk slides are PDF - I use rst2pdf to transform text-based ReStructuredText content into presentation slides. With all these PDFs hanging around, it can be very handy to have them as thumbnails. I use the images both in the printable speaker notes that I produce (and I should blog that too now I've mentioned it), and to share on twitter - especially the resources slide that everyone photographs! My image file is much more readable than your cameraphone picture in terrible lighting :) So here's my script for thumbnails in case you want to do the same; most presentation tools will export to PDF if you're not already working in that format. Continue reading

Grab Annotations from a PDF with pypdf2

If you've noticed a lot of PDF content around here lately, that's because I work with PDF a lot! Most of all, all my slide decks are in PDF and in the last year or so I've started using speaker notes in my presentations. Yes, this means that if you saw me speak in the first ten years of my speaking career, that was without speaker notes.

There are some situations where I don't have access to my speaker notes. Usually this is a good reason, such as I have mirrored my displays so I can demo or play a video without fiddling with my display settings in the middle of a talk. Sometimes, it's because something bad happened and I'm presenting from someone else's machine or a laptop that's completely off stage and I only have the comfort monitor. For those situations I use a printed set of backup speaker notes so I thought I'd share the script that creates these.

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Pretty-Printing JSON with Python's JSON Tool

Today's quick tip is something that was widely retweeted after my "Debugging HTTP" talk at the ever-fabulous WhiskyWeb conference last weekend. When working with JSON on the commandline, here's a quick tip for showing the JSON in a nicer format:

curl http://api.joind.in | python -mjson.tool

You need python installed, but the JSON extension is probably included, and that's all you need for this tool. The result is something like:

python-mjsontool

You can also use this approach to present JSON data that has been captured to another file, for example, it's a handy trick that I use often when developing something with JSON as a data format.