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Show HN: Page Gym - page speed analysis and optimization tool for advanced users

https://pagegym.com/
1•razcoj•1h ago
Hi everyone,

Like the title says, it lets you test your page and then try different optimizations (preloading stuff, inserting HTML, executing arbitrary JS, etc) on the page without making any changes to your code.

Short demo: https://youtu.be/IKSu-rv78wI

It's something I've been developing over several years, and to which I've dedicated my full time over the past 7 months or so. Let me know what you think.

What makes Joel Mokyr great

https://www.worksinprogress.news/p/what-makes-joel-mokyr-great
1•dionysou•3m ago•0 comments

America's future could hinge on whether AI slightly disappoints

https://www.noahpinion.blog/p/americas-future-could-hinge-on-whether
1•jxmorris12•3m ago•0 comments

Administration cancels largest solar project in United States

https://pv-magazine-usa.com/2025/10/10/trump-administration-cancels-largest-solar-project-in-unit...
1•zekrioca•4m ago•0 comments

LiquidScreens: A maintained fork of Compose Navigation Reimagined

https://github.com/easyusesoft/LiquidScreens
1•inoshy•4m ago•1 comments

One of EU's biggest farm machinery firms halts US exports over 'hidden' tariffs

https://www.theguardian.com/business/2025/oct/13/one-europe-biggest-farm-machinery-firms-halts-us...
1•tzs•6m ago•1 comments

Did hackers use Binance collateral loophole to crash market, force liquidations?

https://www.cryptopolitan.com/hackers-used-binance-to-crash-crypto-market/
1•walterbell•8m ago•0 comments

ReasoningBank: Scaling Agent Self-Evolving with Reasoning Memory

https://arxiv.org/abs/2509.25140
1•SweetSoftPillow•9m ago•0 comments

Behavior Challenge Charts the Way Forward for Domestic Robotics

https://hai.stanford.edu/news/behavior-challenge-charts-the-way-forward-for-domestic-robotics
1•T-A•9m ago•0 comments

Understanding problems tougher than solving them, mobile game experiment shows

https://phys.org/news/2025-09-problems-tougher-mobile-game.html
1•PaulHoule•11m ago•0 comments

Beginner Friendly Projects for Hacktoberfest

https://twitter.com/nmanu__/status/1977782869050184035
1•claeusdev•13m ago•1 comments

ProtonVPN Lied About Logging

https://vp.net/l/en-US/blog/ProtonVPN-Lied-About-Logging
1•rasengan•14m ago•1 comments

Show HN: Runtric – Learn to Code by Thinking, Not Copying AI

https://runtric.com/
2•resetmerlin•18m ago•0 comments

Show HN: Artiforge – Build with AI in "easy mode"

https://artiforge.ai
1•riktar•20m ago•0 comments

EagleEye Puts Mission Command and AI Directly into the Warfighter's Helmet

https://www.anduril.com/article/anduril-s-eagleeye-puts-mission-command-and-ai-directly-into-the-...
2•TiredOfLife•20m ago•0 comments

In Defense of Generative Video Accelerationism

https://www.thediff.co/archive/in-defense-of-generative-video-accelerationism/
1•mrled•20m ago•0 comments

Decipad, the smart interactive notebook, is now open-source and MIT licensed

https://github.com/decipad/decipad
3•goncalossilva•21m ago•0 comments

Magellan Spacecraft: End of Mission

https://en.wikipedia.org/wiki/Magellan_(spacecraft)
1•petethomas•21m ago•0 comments

The Cancer Imaging Archive (TCIA)

https://www.cancerimagingarchive.net/
1•1970-01-01•21m ago•0 comments

Email accounts of 1.2M Indian Central government employees now on Zoho

https://www.thehindu.com/news/national/email-accounts-of-12-lakh-central-government-employees-now...
4•crossroadsguy•25m ago•1 comments

How a deadly flu outbreak is making Japan sick

https://www.firstpost.com/health/japan-flu-outbreak-influenza-13941675.html
1•saikatsg•28m ago•1 comments

Is Systems Research Just About Making Numbers Bigger?

https://brooker.co.za/blog/2025/10/12/barbarians.html
2•KraftyOne•30m ago•0 comments

Why I built an MCP server to check my docs (and what it taught me)

https://passo.uno/mcp-server-docs-tooling/
1•theletterf•30m ago•0 comments

Intro to Practical SIMD for Graphics

https://vkguide.dev/docs/extra-chapter/intro_to_simd/
2•signa11•30m ago•0 comments

This Startup Is Deleting 29% of All CO2 Emissions

https://www.youtube.com/watch?v=ENG_DQF5E60
1•thelastgallon•34m ago•0 comments

Bcachefs

https://bcachefs.org/
2•whalesalad•35m ago•0 comments

Dictionaries of Neologisms: A Review and Proposals for Its Improvement

https://www.degruyterbrill.com/document/doi/10.1515/opli-2016-0028/html
1•bryanrasmussen•37m ago•0 comments

U-Hawk, a Battle-Ready Autonomous Unmanned Aerial Vehicle

https://news.lockheedmartin.com/2025-10-13-Sikorsky-Converts-BLACK-HAWK-into-U-Hawk-A-Battle-Read...
1•nomilk•38m ago•0 comments

Environment variables are a legacy mess: Let's dive deep into them

https://allvpv.org/haotic-journey-through-envvars/
48•signa11•39m ago•18 comments

The fixer's dilemma: Chris Lehane and OpenAI's impossible mission

https://techcrunch.com/2025/10/10/the-fixers-dilemma-chris-lehane-and-openais-impossible-mission/
2•rntn•39m ago•0 comments

The early Unix history of chown() being restricted to root

https://utcc.utoronto.ca/~cks/space/blog/unix/ChownRestrictionEarlyHistory
2•kencausey•40m ago•0 comments