Show HN: An AI zettelkasten that extracts ideas from articles, videos, and PDFs https://ift.tt/dW9lc6h

Show HN: An AI zettelkasten that extracts ideas from articles, videos, and PDFs Hey HN! Over the weekend (leaning heavily on Opus 4.5) I wrote Jargon - an AI-managed zettelkasten that reads articles, papers, and YouTube videos, extracts the key ideas, and automatically links related concepts together. Demo video: https://youtu.be/W7ejMqZ6EUQ Repo: https://ift.tt/EW1J4sj You can paste an article, PDF link, or YouTube video to parse, or ask questions directly and it'll find its own content. Sources get summarized, broken into insight cards, and embedded for semantic search. Similar ideas automatically cluster together. Each insight can spawn research threads - questions that trigger web searches to pull in related content, which flows through the same pipeline. You can explore the graph of linked ideas directly, or ask questions and it'll RAG over your whole library plus fresh web results. Jargon uses Rails + Hotwire with Falcon for async processing, pgvector for embeddings, Exa for neural web search, crawl4ai as a fallback scraper, and pdftotext for academic papers. https://ift.tt/EW1J4sj December 1, 2025 at 11:50PM

Show HN: Memory Lane – bootstrap your naive Claude instances with their history https://ift.tt/mdxkrTo

Show HN: Memory Lane – bootstrap your naive Claude instances with their history https://ift.tt/zFcof3q December 1, 2025 at 02:34AM

Show HN: I Built Tinyfocus – A Minimal Tool to Help Solo Founders Focus https://ift.tt/rAWgtic

Show HN: I Built Tinyfocus – A Minimal Tool to Help Solo Founders Focus Hi HN, I just launched Tinyfocus, a small productivity tool designed specifically for solo founders and builders. The goal is simple: help you focus on what matters and get more done in less time. Here’s what Tinyfocus does: Lets you track your top tasks and prioritize efficiently. Provides micro dashboards to keep your daily focus in check. Lightweight, no distractions, no fluff. I built it entirely by myself, iterating in public, and I wanted to share it with the community to get feedback. It’s been crazy seeing how a simple tool can make such a difference in daily focus, especially when you’re juggling multiple projects as a solo founder. Check it out here: tinyfoc.us I’d love to hear your thoughts – any feedback, feature ideas, or bugs you notice. Thanks! https://ift.tt/xUyNYdR November 30, 2025 at 11:35PM

Show HN: I made a free log anonymizer in the browser https://ift.tt/aCVQh9b

Show HN: I made a free log anonymizer in the browser https://ift.tt/3kHKyhp November 30, 2025 at 04:05AM

Show HN: Nano PDF – A CLI Tool to Edit PDFs with Gemini's Nano Banana https://ift.tt/1vXrFOB

Show HN: Nano PDF – A CLI Tool to Edit PDFs with Gemini's Nano Banana The new Gemini 3 Pro Image model (aka Nano Banana) is incredible at generating slides, so I thought it would be fun to build a CLI tool that lets you edit PDF presentations using plain English. The tool converts the page you want to edit into an image, sends it to the model API together with your prompt to generate an edited image, then converts the updated image back and stitches into the original document. Examples: - `nano-pdf edit deck.pdf 5 "Update the revenue chart to show Q3 at $2.5M"` - `nano-pdf add deck.pdf 15 "Create an executive summary slide with 5 bullet points"` Features: - Edit multiple pages in parallel - Add entirely new slides that match your deck's style - Google Search enabled by default so the model can look up current data - Preserves text layer for copy/paste and search It can work with any kind of PDF but I expect it would be most useful for a quick edit to a deck or something similar. GitHub: https://ift.tt/vuH0JYc https://ift.tt/vuH0JYc November 30, 2025 at 02:14AM

Show HN: No Environment Setups Anymore https://ift.tt/2pXdCkr

Show HN: No Environment Setups Anymore Hi everyone, for last 7 months, I have been learning all the attempts made to eliminate codebase environment setups. Here's my product which is a leap in the same direction and will help you run any codebase on relevant machine. Check it out on gitarsenal.dev/ and we got ranked 6th on Product Hunt as well. https://ift.tt/8lsmNy0 November 30, 2025 at 01:27AM

Show HN: Zero-power photonic language model–code https://ift.tt/ilDtMTJ

Show HN: Zero-power photonic language model–code The model uses a 1024-dimensional complex Hilbert space with 32 layers of programmable Mach–Zehnder meshes (Reck architecture) and derives token probabilities directly via the Born rule. Despite using only unitary operations and no attention mechanism, a 1024×32 model achieves coherent TinyStories generation after < 1.8 hours of training on a single consumer GPU. This is Part 1 - the next step is physical implementation with $50 of optics from AliExpress. https://zenodo.org/records/17764289 November 30, 2025 at 12:15AM