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Show HN: I built an app that turns any image into 5-step pencil drawing practice

https://restoftheowl.app
1•roughike•1h ago
Hey all!

My girlfriend is really good at drawing and wants to become an illustrator for children's books, so she's practicing drawing various animals.

We were at a cafe and she got stuck staring at a blank page trying to draw a fox using a reference photo. So I generated some pencil sketches from the reference image with ChatGPT. Seeing the drawing broken down step by step made it easier to start for her.

The next day she asked me to generate sketches for 10 more photos, so I decided to polish my prompts and wrap the workflow in a self-service app for her.

The app allows you to upload any image and it generates 5 pencil sketches from the uploaded image, from basic shapes to a fully detailed pencil sketch.

https://restoftheowl.app

TSMC says employees tried to steal trade secrets on iPhone 18 chip process

https://9to5mac.com/2025/08/05/tsmc-says-employees-tried-to-steal-trade-secrets-on-iphone-18-chip-process/
1•mikece•1m ago•0 comments

It's Not Magic: Securing Modern Apps with PKCE [video]

https://www.youtube.com/watch?v=WRcUUNgUw14
1•mooreds•2m ago•0 comments

Designing for User Font-Size and Zoom

https://www.oddbird.net/2025/07/22/size-preferences/
1•BaudouinVH•3m ago•0 comments

Wrangling Platforms: Cleaning Up the Mess [video]

https://www.youtube.com/watch?v=PF5orWk1T_Q
1•mooreds•3m ago•0 comments

Clippings

1•prairieroadent•5m ago•0 comments

Slack-GitHub Threads – Post Slack Thread Replies as GitHub Comments

https://github.com/markhallen/slack-github-threads
1•markhallen•5m ago•1 comments

Time Logging Helps You Regain Focus and Take Back Your Day

https://mindthenerd.com/the-productivity-habit-that-keeps-me-focused-every-day/
1•surprisetalk•5m ago•0 comments

Filtered for bottom-up global monitoring

https://interconnected.org/home/2025/08/01/filtered
1•surprisetalk•5m ago•0 comments

Designing Calm Technology (1995) [pdf]

https://people.csail.mit.edu/rudolph/Teaching/weiser.pdf
1•surprisetalk•6m ago•0 comments

Scar – A programming language for easy concurrency and parallelism

https://scarlang.pages.dev/
1•death_eternal•9m ago•1 comments

Palmer Luckey: I Saw the Future of War. Now It's Up to Us to Prepare for It

https://www.thefp.com/p/palmer-luckey-i-saw-the-future-of-war-taiwan
2•mhb•10m ago•1 comments

Who here runs async-first teams? What surprised you the most?

https://businessofsoftware.org/2025/08/how-amir-salihefendic-scaled-doist-with-asynchronous-work/
1•jannurgel•13m ago•0 comments

China Faces EU Sanctions over Secret Drone Shipments to Russia's Military

https://united24media.com/latest-news/china-faces-eu-sanctions-over-secret-drone-shipments-to-russias-military-10455
1•mhga•13m ago•0 comments

Punishing Putin's Enablers India and China

https://www.politico.eu/newsletter/brussels-playbook/punishing-putins-enablers-india-and-china/
1•mhga•15m ago•0 comments

GitHub CEO Warns Developers: "Either Embrace AI or Get Out of This Career"

https://www.finalroundai.com/blog/github-ceo-thomas-dohmke-warns-developers-embrace-ai-or-quit
12•pjmlp•17m ago•14 comments

The Case for Data Centre Hyperloops (2024)

https://ieeexplore.ieee.org/document/10609637
1•mafuy•18m ago•0 comments

Cisco discloses data breach impacting Cisco.com user accounts

https://www.bleepingcomputer.com/news/security/cisco-discloses-data-breach-impacting-ciscocom-user-accounts/
1•mikece•21m ago•0 comments

Calcule

https://calcule.app
1•Codetwyn•21m ago•0 comments

No Retvrn

https://asteriskmag.com/issues/11/no-retvrn
2•surprisetalk•23m ago•0 comments

How to Count N-Ary Trees

https://golem.ph.utexas.edu/category/2025/07/counting_trees.html
1•hyperbrainer•26m ago•0 comments

Aalborg zoo in Denmark asks for unwanted pets to feed its predators

https://www.bbc.com/news/articles/c0r7z2ynd2lo
4•bookofjoe•28m ago•0 comments

Licensed to Ill: The disquieting story of an American health-product giant

https://www.bookforum.com/print/3201/licensed-to-ill-62172
1•bryanrasmussen•30m ago•0 comments

RNA viruses may differentially shape carbon recycling in the ocean

https://phys.org/news/2025-07-rna-viruses-differentially-carbon-recycling.html
1•PaulHoule•30m ago•0 comments

Attention was never enough: Tracing the rise of hybrid LLMs

https://www.ai21.com/blog/rise-of-hybrid-llms/
2•tbh1984•31m ago•0 comments

Baumol's Cost Disease and the Undercutting of Physician Pay

https://www.benwhite.com/medicine/baumols-cost-disease-and-the-undercutting-of-physician-pay/
1•mhb•32m ago•0 comments

Open-Source Coders Who Benefit the Public Should Be Tax-Exempt

https://news.bloombergtax.com/tax-insights-and-commentary/open-source-coders-who-benefit-the-public-should-be-tax-exempt
2•tldrthelaw•33m ago•0 comments

Memory corruption in Nvidia Triton (as a new hire)

https://blog.trailofbits.com/2025/08/04/uncovering-memory-corruption-in-nvidia-triton-as-a-new-hire/
1•ingve•38m ago•0 comments

Skechers is making kids' shoes with a hidden AirTag compartment

https://techcrunch.com/2025/07/30/skechers-is-making-kids-shoes-with-a-hidden-airtag-compartment/
2•mikece•39m ago•0 comments

Harvard considered as a long-lived biological organism (2022)

https://frankhecker.com/2022/11/19/harvard-considered-as-a-long-lived-biological-organism/
1•noelwelsh•40m ago•0 comments

How an NYC Suburb Is Managing to Bring Rents Down

https://www.wsj.com/real-estate/nyc-new-rochelle-lower-rent-e7695ded
2•impish9208•41m ago•2 comments