01 / Stack scanner
Visualize your
Repo's Stack Instantly
Paste any public GitHub repo. Stack Fingerprint scans its files, detects frameworks, runtimes and tooling, and hands you an embeddable SVG card for your README.
Try
02 / Why
Paste a repo,
get a badge.
Biometric scanning meets the developer terminal. One scan reads your repo's fingerprint and turns it into a card.
Zero auth
Paste a repo, get a badge. No sign-in, no tokens, no friction.
Zero config
Smart detection out of the box. Sensible defaults everywhere.
Full control
Themes, layouts, filters, pins and ignores — you decide what to show.
03 / How it works
One scan, one card.
01
Fetch
Reads the public file tree through the GitHub Contents API. No authentication needed.
$ --api github-contents02
Fingerprint
Matches package files, lockfiles, configs and folders against 60+ signals.
$ --mode lockfile,config,dir03
Render
Compiles a lightweight static SVG with real vector icons for every tech.
$ --renderer svg04
Embed
Copy the snippet into your README, or let the GitHub Action commit the card for you. It stays in sync.
$ --output markdown,html04 / Used by
In the wild.
Real READMEs wearing their fingerprint. Using it too? Get featured →
05 / From the blog
Better READMEs.
How Stack Fingerprint detects 200+ technologies with one GitHub API call
Inside the scanner: one recursive Git Trees request, file signals, dependency signals, dev-only tagging, and why every icon has to be inlined as a data URI for GitHub to render it.
GitHub profile README ideas: 25 sections worth adding
A practical list of 25 sections for your GitHub profile README, from the intro line to auto-updating stack cards, blog feeds and dark-mode images, with copy-paste snippets for each.
Automate your README's tech stack with GitHub Actions
Generate an up-to-date tech stack card on every push and commit it to your repo, so your README never depends on a third-party image server. Setup, inputs and monorepo tips.
06 / Open source
Saved you time?
Leave a star.
Stack Fingerprint is free and open source. A star on GitHub helps other developers find it.
