frontpage.

I built VoiceBrief (https://voicebrief.io) to solve my own problem: 2-hour daily commute during college with no way to study on a crowded train.

  Upload a PDF → Get two audio formats:
  - 10-min summary narration
  - 1+ hour professor-style deep dive

  Plus: real-time text highlighting, bookmarks, AI quizzes with spaced repetition.

  Tech: React/Express/PostgreSQL, OpenAI GPT-4 + TTS-1-HD, Railway hosting.

  Main challenge: TTS costs ~$2-3 per 50-page PDF. Looking for cost optimization strategies.

  Free tier: 3 PDFs. Bootstrapped, ~500 users, no VC funding.

  Would love feedback on pricing ($9.99/mo Pro?) and TTS alternatives!

$400M Machine that Prints COMPUTER CHIPS [video]

OWASP Kubernetes Top Survey

Show HN: 24-hour Halloween radio station hosted by Dr. Eleven

Lightweight 2D Framebuffer Library for Linux

These Are All the Same Thing

Long-Term Asset Return Study – The Ultimate Guide to Long-Term Investing

Renovate 42 Is Coming

Show HN: I Built Bookmarks Manager Online

The Future of Routing with the Navigation API – Eduardo San Martin Morote [video]

'It's quite useless to us': What autistic people want

Disney yanks channels from YouTube TV after parties fail to resolve dispute

Chemical additive slashes carbon emissions when creating synthetic fuels

Future of AI

Ask HN: Why I rarely see game dev startup here?

Businesses are running out of pennies in the US

How the Substack feed is learning to understand your reading journey

Geometric Pattern Generator

How China Powers Its Electric Cars and High-Speed Trains

Bluesky hits 40M users, introduces 'dislikes' beta

Security Community Slams MIT-Linked Report Claiming AI Powers 80% of Ransomware

Strix Halo's Memory Subsystem: Tackling iGPU Challenges

Strix Halo's Memory Subsystem: Tackling iGPU Challenges

We Have a Human Problem

FCC to rescind ruling that said ISPs are required to secure their networks

The new American dream is to get rich *quick

YouTube's AI Moderator Pulls Windows 11 Workaround Videos, Calls Them Dangerous

Show HN: Historian – A simple shell history tool

I'm an IIT Madras Student. But to Some, I'm Diluting the Brand

First climate tipping point reached, coral reefs facing 'widespread dieback'

CUDA Programming Is Cooked

Show HN: VoiceBrief – Turn textbooks into 1-hour audio lectures with AI

$400M Machine that Prints COMPUTER CHIPS [video]

OWASP Kubernetes Top Survey

Show HN: 24-hour Halloween radio station hosted by Dr. Eleven

Lightweight 2D Framebuffer Library for Linux

These Are All the Same Thing

Long-Term Asset Return Study – The Ultimate Guide to Long-Term Investing

Renovate 42 Is Coming

Show HN: I Built Bookmarks Manager Online

The Future of Routing with the Navigation API – Eduardo San Martin Morote [video]

'It's quite useless to us': What autistic people want

Disney yanks channels from YouTube TV after parties fail to resolve dispute

Chemical additive slashes carbon emissions when creating synthetic fuels

Future of AI

Ask HN: Why I rarely see game dev startup here?

Businesses are running out of pennies in the US

How the Substack feed is learning to understand your reading journey

Geometric Pattern Generator

How China Powers Its Electric Cars and High-Speed Trains

Bluesky hits 40M users, introduces 'dislikes' beta

Security Community Slams MIT-Linked Report Claiming AI Powers 80% of Ransomware

Strix Halo's Memory Subsystem: Tackling iGPU Challenges

Strix Halo's Memory Subsystem: Tackling iGPU Challenges

We Have a Human Problem

FCC to rescind ruling that said ISPs are required to secure their networks

The new American dream is to get rich *quick

YouTube's AI Moderator Pulls Windows 11 Workaround Videos, Calls Them Dangerous

Show HN: Historian – A simple shell history tool

I'm an IIT Madras Student. But to Some, I'm Diluting the Brand

First climate tipping point reached, coral reefs facing 'widespread dieback'

CUDA Programming Is Cooked