Self-updating screenshots

(interblah.net)

210 points | by bjhess 23 hours ago

23 comments

  • CyberShadow 4 hours ago
    Same, I've added a .#screenshots derivation. High up-front effort but almost zero maintenance afterwards.

    Bonus: since you're generating screenshots programmatically anyway, you can generate a pair of each with your app's light/dark theme, and swap them in/out depending on prefers-color-scheme: dark. <picture> elements work in GitHub READMEs, too: https://github.com/CyberShadow/CyDo#readme

  • furyofantares 5 hours ago
    Very cool.

    For the small casual games I've been vibe coding, I always start from a place where the application has a CLI where it can run headless, rendering to offscreen texture, with a a screenshot command as well as performance instrumentation. It takes no time to include all this, and gives the agent a way to automate the ui and inspect important things. It also lets me trivially have the agent update screenshots.

    Not as neat as being part of the build process, but I will now add that.

    • sho_hn 2 hours ago
      I do the same :-)

      I have an offscreen screenshot path, as well as a CLI arg for world pos/camera view vector, and scripted benchmark runs with a simple text-based input format that has rows of named segments of n game ticks length with control inputs per segment. Use that extensively for A/B testing of visuals and performance while working on the game code.

    • avaer 1 hour ago
      > It takes no time to include all this

      In some cases it does. Which engine?

    • _fzslm 3 hours ago
      Would you mind sharing a link to some of these casual games? I ask cuz I'm also interested in how vibe coding can make game development easier.

      We had such a vibrant indie game scene when Adobe flash was about and since then nothing's really touched that level of ease of development. I think vibe coding is the first tool that actually exceeds it.

  • merelysounds 3 hours ago
    This is very useful in mobile projects.

    App stores require screenshots, but generating N images for NUMBER_OF_SCREEN_SIZES times NUMBER_OF_LOCALIZATIONS can be a chore.

    In the past I wrote my own scripts for that, today tools like Fastlane[1] help.

    I use Fastlane for my logic puzzle game Nonoverse[2], you can see sample screenshots in its App Store page.

    I also automated App Preview video recording, complete with multiple scenes. If anyone wants to read more let me know, perhaps this is a good topic for an article.

    [1]: https://fastlane.tools/

    [2]: https://apps.apple.com/us/app/nonoverse-nonogram-puzzles/id6...

    • jdnebdbd 30 minutes ago
      That sounds enticing! I can't figure out if it's a paid service or a local OS application though
  • Biganon 8 minutes ago
    You should set DEBUG=False in your Django settings.
  • cocoto 33 minutes ago
    Wouldn’t a real live render approach work in this case? Have a live preview of your tool inside a rectangle. If the tool is light it should be optimal visually: it will respect browser rendering settings like accessibility parameters or custom addons.
  • LeoDaVibeci 16 hours ago
    I've needed this so many times. BTW this should be a meme: "I think this might be the neatest thing I’ve built in X that nobody will ever notice."
  • willm 1 hour ago
    I approve of this approach.

    The docs for Textual (TUI library for Python) build screenshots along with the docs. Technically not really screenshots, they are SVGs, but principle is the same. They never get out of date.

    https://textual.textualize.io/widgets/markdown/#example

  • dhruv3006 53 minutes ago
    This is very cool - I think I will try having this in https://voiden.md/.
  • schneems 4 hours ago
    This is neat. I wrote https://github.com/zombocom/rundoc. It has a similar feature. The main driver is to produce tutorials so it also puts the output of commands run back in the document.
  • maderalabs 4 hours ago
    Nice! I actually started to build this exact thing a couple years back, and ended up abstracting it out to something more generic with https://picshift.io/. That said, I still love the screenshot use case - the original name of this project was ScreenSync ;)
    • Barbing 2 hours ago
      Neat, good job, and good to have these different approaches out there
  • bobek 2 hours ago
    Plus we had a visual diff on the top of that as a part of the CI pipeline. It prevented a bunch of mishaps ;)
  • xp84 2 hours ago
    Bravo. This is incredibly useful, and really improves the quality of documentation, especially for many applications whose design and UI are always in flux.
  • kalb_almas 3 hours ago
    I'm sometimes getting

    NoMethodError at /self-updating-screenshots undefined method `name' for nil:NilClass

    Ruby title-for: in handle, line 12 Web GET interblah.net/self-updating-screenshots

    followed by a very detailed traceback when I try to access the page

  • efortis 20 hours ago
    same here, but linking to the screenshots used for pixel diffing, which get committed to the repo.

    https://github.com/ericfortis/mockaton/tree/main/pixaton-tes...

  • taspeotis 5 hours ago
    I’ve wondered about doing screenshots from the e2e test run, even keeping docs/ all together in the same repo so when you update the documentation and need a new screenshot you add a new test
  • erikmay 56 minutes ago
    Awesome! Now you could even go a step further and add satori to the pipeline to add content to the the fresh screenshot. This way annotation could be easily added to the screenshot.
  • est 4 hours ago
    I maintain an internal wiki, the contents were generated by each CI/CD and always reflects from latest running code.
  • 3eb7988a1663 4 hours ago
    shot-scraper is another project in this vein.

    https://github.com/simonw/shot-scraper

  • irishcoffee 4 hours ago
    I wrote a gui app once that ran on a safety-critical platform. I ended up stuffing a rendering of the gui (rendered offscreen) into shmem at I think 24hz, and rendered that screenshot into the safety critical application. I passed clicks (no typing for this gui) back from the statically rendered image updating on a cadence, to the offscreen GUI.

    Worked well. Not quite the same as this, but that’s what this reminds me of.

    • yjftsjthsd-h 3 hours ago
      I don't think I follow. What is that giving you that you wouldn't get by just having the user click in the application and see its real interface directly? Or are you saying you were embedding one application inside another?
      • jfim 3 hours ago
        My guess is that it's to ensure that the UI logic crashing or hanging doesn't bring down the safety critical process.
  • devmor 2 hours ago
    Really love this, it should be standard practice!
  • immanuwell 22 hours ago
    nice, embedding the capture instructions right in the markdown as comments is a dead-simple solution that'll age way better than any fancy external tooling
  • TranspectiveDev 3 hours ago
    [dead]
  • Xmd5a 2 hours ago
    > Then you change the UI slightly – tweak a colour, move a button, update some copy – and suddenly every screenshot that includes that element is stale. You know they’re stale. Your users might not notice, but you know, and it gnaws at you.

    F

    Related: Sabotaging projects by overthinking, scope creep, and structural diffing – https://news.ycombinator.com/item?id=47890799

    • cluckindan 2 hours ago
      Read the article you’re linking to, it is not relevant here.