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Stack Fingerprint generates a README-ready tech-stack card from files and dependency manifests in a GitHub repository. You can use a hosted image embed for quick setup, tune which technologies appear, or generate an SVG in your own repository if you do not want the README to depend on a third-party image endpoint at render time.
What Stack Fingerprint detects
In an October 1, 2026 DEV Community article, author MattQ describes Stack Fingerprint as a way to replace manually maintained README badges with a card derived from repository contents. The scanner, as described in that article, makes a recursive request to GitHub’s Git Trees API, then checks file paths and dependency manifests for technology signals.
Examples of manifests it maps include package.json, pyproject.toml, Gemfile, and composer.json. The author says the catalog covers “200+ signals” across categories such as languages, frameworks, UI libraries, databases, testing, build tools, and infrastructure. That figure and the implementation description are the author’s claims; they are not an independent accuracy or performance test.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →The article also says the scanner tracks dependency source, allowing it to mark technologies found only in devDependencies as dev-only. That distinction matters when a README card is meant to describe production software rather than the full development toolchain.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Choose how the card is generated
| Approach | Setup and control | Where the dependency sits |
|---|---|---|
| Hosted embed | Paste the generated image endpoint into the README; the author says basic use needs no token, signup, or config file. | The README relies on the hosted service to serve the image. |
| Configurable card | Use the builder to select visual options and produce Markdown or HTML. MattQ’s article describes 10+ themes, 10 layouts, four sizes, and icon styles; these options may change. | Still uses the hosted service if you embed its served image. |
| Generated repository SVG | The author describes a GitHub Action that generates an SVG on GitHub runners and commits it to the repository. | The README can display a repository-stored image instead of requesting the hosted image endpoint at render time. |
The author also describes a curl workflow and one-click Vercel deployment. The article presents these as alternatives for generating or hosting the card; it does not establish that every part of those workflows has had an independent security review.
Filter signals so the card describes the right thing
Automatic detection is a starting point, not a guarantee that every listed technology is active, important, or relevant to the repository’s purpose. MattQ says user feedback raised concerns about false positives, unused technologies, mixed monorepo signals, long badge lists, and reliance on a third-party image host. Those are reported motivations for product features, not published error-rate measurements.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Pick a signal view
allincludes all detected signals, with dev-only signals dimmed.prodonlylimits the output to production dependencies.topshows languages and frameworks, capped at five, for a shorter card.
Scope a monorepo
If the repository contains multiple applications or packages, use the path setting to scan a subdirectory rather than presenting the entire repository as one stack. This is especially useful when a root-level scan would combine technologies belonging to unrelated projects.
Apply manual corrections
The author describes a .stackfingerprint.json configuration file for ignoring technologies, pinning desired ones, and assigning custom labels. Use these controls when detection is technically present but misleading—for example, when a dependency remains in a manifest but the README should focus on the production app.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Decide whether to use the hosted image or keep an SVG locally
The hosted embed minimizes setup, but a rendered README depends on the service remaining available and serving the image. A committed SVG adds a generation step and repository artifact, while removing that particular runtime dependency on the hosted image endpoint. The author says the project uses caching headers, including stale-while-revalidate, to help with GitHub rate limits; this is an implementation claim, not evidence that rate limits cannot affect it.
Choose based on the trade-off that matters to the maintainers:
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
- Use the hosted embed when ease of adoption matters most and an external image request is acceptable.
- Configure and filter the card when the default detected list is too broad, the project is a monorepo, or a concise README is more useful than an exhaustive inventory.
- Generate an SVG in the repository when you prefer the visible artifact to live alongside the README and want to avoid the hosted endpoint at display time. Review the workflow and permissions you adopt; the author’s description alone is not a security audit.
Extending the project
MattQ’s article describes a Next.js App Router application, a hand-written SVG builder, simple-icons, Tailwind CSS, Supabase for a showcase, and Vercel hosting. For contributors, the article points to src/data/signals.js for technology detection entries, with a dependency-map entry where appropriate, and src/data/themes.js for theme additions. These paths and stack details are author-provided and may change as the project evolves.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
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