# r/selfhosted & r/programming & r/SideProject — Reddit post drafts **Targets:** r/SideProject (primary), r/selfhosted, r/programming, r/InternetIsBeautiful **When:** 24–48 hours after the Show HN post, to capture the secondary traffic wave **Subreddit-specific rules (read these before posting):** - r/SideProject: text posts are preferred over links; include a demo, the tech stack, and a "what I learned" section - r/selfhosted: must be self-hostable. The site qualifies (one HTML file per tool, runs on any web server, no dependencies) - r/programming: must be interesting from a programming/architecture perspective. The "1,424 tools in vanilla JS, a repo of about 92 MB" angle is the hook - r/InternetIsBeautiful: must be genuinely beautiful. The site qualifies; the open-standards and the catalogue are the angles --- ## r/SideProject (primary) **Title:** I built 1,424 free browser-side tools in 2 years. No accounts, no display ads, no upsell. Here\'s what I learned. **Body:** > I\'m a developer in Luton, UK. Two years ago I started a hobby project: a single page of calculator widgets. It\'s now 1,424 tools. Every one of them is one HTML file, vanilla JavaScript, no framework, no build step. The whole repo is about 92 MB, most of it a photo library that two of the non-tool pages use. > > The site: https://www.themostusefulsiteintheworld.com > The repo: https://github.com/mrpr0phecy/mrpr0phecy > > **What it is:** 1,424 browser-side tools. Mortgage calculator, BMI, compound interest, password generator, BPM tapper, JSON formatter, eyepiece calculator, sleep planner, colour contrast checker, invoice generator. 1,200+ more. > > **The thing I am most proud of:** the no-display-ads part. View source on any page. You will not find an ad slot, an ad network script, a sponsored-content block, or a retargeting pixel. The whole markup is the page, and the page is the tool. (The only third-party scripts anywhere on the site are Google Analytics, for measurement, and three.js / cannon.js / the YouTube IFrame API on the specific tool pages that need them. None of them are advertising.) > > **The thing I am least proud of:** the homepage. I have been told it\'s "a wall of emoji". It is. I am working on it. > > **What I learned in 2 years:** > > 1. **Most users want 10% of the tools.** The mortgage calculator, BMI, password generator, compound interest, and BPM tapper get about 60% of the traffic. The other 1,424 tools are there because I enjoy building them, not because anyone needs them. That is fine. > > 2. **The "no display ads" thing is more work than I expected.** I can\'t do paid acquisition, can\'t run retargeting, can\'t monetise the existing audience with a banner network. I make marketing decisions based on Google Analytics (which is measurement, not ads), GitHub traffic, and what people tell me directly via the help form. > > 3. **Embeds are the under-rated feature.** The /embed.html page lets you iframe any tool in one line. A non-profit health clinic embedded the BMI calculator on their resources page. A primary school embedded the times-tables tool. Neither of them would have found the site without the embed feature. > > 4. **Open source is the right call.** Every tool is on GitHub. Every contribution is reviewed. The catalogue is just a JSON file. The site has had a handful of outside contributions in 2 years. > > 5. **AI engines are starting to cite the guides.** I added 12 long-form "definitive guides" last week (mortgage, BMI, compound interest, etc.) and they have already started showing up in Perplexity citations. I will report back. > > **What I want feedback on:** > - Which tool should I add next? > - Which tool is wrong? (Especially anything in the finance, tax, or health category.) > - Is the homepage a wall of emoji? (Be honest.) > > Happy to answer questions. The site is non-commercial, the repo is open, the donate link has made £34.50 in 9 months. > > Russell. --- ## r/selfhosted **Title:** Self-hostable catalogue of 1,424 free browser-side tools (one HTML file each, no build, no dependencies) **Body:** > I built a site with 1,424 free browser-side tools, and the whole thing is designed to be self-hostable. > > The repo: https://github.com/mrpr0phecy/mrpr0phecy > > **What you get:** > - 1,424 separate card files, each one self-contained > - A `cards/cards.json` index of all 1,424 tools > - A static `index.html` that lists them all with a category filter > - A `feed.xml` (RSS), `sitemap.xml`, `llms.txt`, and a `.well-known/` directory > - An `embed.html` that lets you iframe any tool > > **To self-host:** > ``` > git clone https://github.com/mrpr0phecy/mrpr0phecy.git > cd mrpr0phecy > python3 -m http.server 8000 > ``` > > That\'s it. No npm install, no build, no database, no server-side code. The 1,424 tools all run client-side. The repo is about 92 MB. > > **What it is good for:** > - A read-it-later offline copy of the site for when the internet is down > - A personal fork with your own tool customisation > - A resource for a non-profit or community project that needs calculators > - A teaching tool for a code school (the source is intentionally readable) > > **What it is not:** > - Not a multi-tenant SaaS. There is no auth, no per-user state, no backend. > - Not a PWA. There is no service worker. (It is on the list.) > > Issues and PRs welcome. The contribution guide is in `CONTRIBUTING.md`. --- ## r/programming **Title:** I built 1,424 browser-side tools in vanilla JavaScript. The repo is about 92 MB. Here is the architecture. **Body:** > I have spent 2 years building a catalogue of 1,424 free browser-side tools. Every tool is one HTML file. No framework, no build, no npm, no TypeScript, no bundler. The repo is about 92 MB, of which about 18 MB is the tools themselves; most of the rest is a photo library that two of the non-tool pages use. > > The repo: https://github.com/mrpr0phecy/mrpr0phecy > The live site: https://www.themostusefulsiteintheworld.com > > **The architecture:** > > - **One HTML file per tool.** Each tool is a single `cards/.html` file. Vanilla JS, CSS in `