Show HN: Minilith – A zero-dependency CMS stored inside a PNG file https://ift.tt/Z3UQmzv

Show HN: Minilith – A zero-dependency CMS stored inside a PNG file I enjoy the constraints of retro development. While building games in PICO-8, I took a interest in the way it packs data into the virtual cartridge. I dug into steganography and started thinking: could I apply the same logic to a content management system? Do we really need all the bloat just to host a micro blog? Minilith is a database free CMS where the entire state (posts, pages, and settings) are compressed and stored directly in the pixels of a 256xd256 PNG file. Minilith has zero dependencies. There is no Node, no bundlers, and no external DBs. It relies entirely on browser APIs to compress, secure, and render a site directly from the image. The Minilith Architectural Lifecycle Instead of a traditional backend and database, the flow looks like this: 1. Payload Creation: The editor data (JSON) is signed with a private key and compressed using the browser's native deflate algorithms. 2. Injection: The compressed bits are injected into the image's RGB channels using steganography. A raw tEXt chunk is injected right before the IEND marker to wrap the extraction script, turning the image into an executable polyglot. 3. Distribution: The result is a single image file. It can either be pushed directly to Cloudflare KV or downloaded locally. 4. Extraction & Rendering: A client side loader fetches the image, draws it to a hidden canvas, extracts the bits, verifies the signature and visual fingerprint, and runs the decompressed payload. Since the entire database is just a picture, deployment and portability are extremely simple: - Cloudflare Edge: Publish directly from the editor to Cloudflare KV, overwriting a single key-value pair for instant updates. - Self Hosting: Generate a .zip archive from the editor and host on any basic web server. - Offline Portability: The editor utilizes service workers. Once you have visited the editor once it is cached. You can view, edit, and generate new images completely offline. The obvious flaw is aggressive image processing and optimization destroying the polyglot logic and data. (Though fun fact: texting the raw image over iMessage preserves the payload) The code is experimental and the linked post is my architectural breakdown of the process. I'd love feedback and to hear your thoughts and ideas. https://blog.minilith.site/#posts/minilith-architecture September 5, 2026 at 09:09AM

Show HN: TenantLayer – Multi-Tenancy for Spring Boot and Postgres https://ift.tt/5MRJmHB

Show HN: TenantLayer – Multi-Tenancy for Spring Boot and Postgres https://tenantlayer.io September 5, 2026 at 05:50AM

Show HN: WinZST > 7-Zip fork with first-class compressed tar support on Windows https://ift.tt/fDmnBVi

Show HN: WinZST > 7-Zip fork with first-class compressed tar support on Windows WinZST is a 7-Zip fork that extracts compressed tar archives directly to their final directory instead of materializing an intermediate `.tar`. In one 11.8 GiB `.tar.gz` test containing mostly video, WinZST took 51.87s from archive → `foo/`; 7-Zip took 103.53s across `.tar.gz` → `.tar` → `foo/`. https://ift.tt/uaRsmOp September 5, 2026 at 12:58AM

Show HN: Rubato – Retro-Mac desk device mirrors AI coding state-ESP8266 https://ift.tt/9BJYUgO

Show HN: Rubato – Retro-Mac desk device mirrors AI coding state-ESP8266 Hi everyone! I have built an AI health device (ESP8266 + 240*240 screen). It can show AI Agents' status in real time with breathing bubble. And remind user dringking water, toilet, streth, etc. support: DeepSeek Harness, opencode, OpenClaw, Claude Code, Cursor. Hardware design, firmware and plugins are all opensource. urls are here: https://ift.tt/5yA78Zi https://ift.tt/Ky0Gxcg Type-c power supply, 2.4G wifi. Online sell on Tindie: https://ift.tt/4mUADLi... . But building your own is also OK. Ask me anything. Thanks. https://ift.tt/5yA78Zi September 5, 2026 at 12:16AM

Show HN: A gravity simulator where forces propagate at the speed of light https://ift.tt/B4Vd15K

Show HN: A gravity simulator where forces propagate at the speed of light https://ift.tt/5GxKh6l September 3, 2026 at 01:54PM

Show HN: Interactive map of the Japanese address system https://ift.tt/MqvT4LH

Show HN: Interactive map of the Japanese address system I had a hard time understanding the Japanese address system. Parts of addresses have suffixes like fu, shi, ku, chōme, ban and gō. Which suffixes are used varies between regions in a way that seemed random to me. I couldn't find a map of the system with a modern visualization, so I made one. It also shows whether an area has a governor or a mayor. For example Tokyo's wards have mayors and Osaka's don't. You can click around or drop the pin to explore, or write an address in the search bar. https://japanmap.fyi September 4, 2026 at 03:42AM

Show HN: Word42, a wordprocessor inspired by MS Word and Abiword https://ift.tt/YtwTKr4

Show HN: Word42, a wordprocessor inspired by MS Word and Abiword https://word42.org/ September 4, 2026 at 01:39AM