README Badge Generator (Shields.io-Style)
Guide
README Badge Generator
The README Badge Generator builds pixel-perfect Shields.io-style badges directly in your browser. Pick a preset or craft your own label and message, choose colors and a style (flat, flat-square, for-the-badge, or plastic), and get copy-ready Markdown, HTML, SVG, and data URL output. No external API calls, no network dependency, no broken badges when the service is down — the SVG is generated client-side and embedded inline.
How to Use
- Pick a preset from the Template dropdown, or keep it on Custom and fill in your own label and message.
- Choose a label color and a message color — preset Shields.io colors or a custom hex.
- Select a badge style: flat, flat-square, for-the-badge, or plastic.
- Watch the live preview update on both light and dark backgrounds.
- Copy the Markdown, HTML, URL, or raw SVG — or download the SVG file.
Features
- Four badge styles – Flat, flat-square, for-the-badge (uppercase, taller), and plastic with gradient shading.
- Presets included – Version, license, build status, coverage, downloads, stars, and “made with love” templates.
- Live preview – Instant rendering with a light/dark background toggle so you can see how the badge sits in different README themes.
- Four output formats – Markdown, HTML img tag, SVG data URL, and raw SVG markup.
- Self-contained SVG – Text is rendered as real SVG text nodes with measured widths, drop shadows, and rounded corners where appropriate.
- Custom colors – Standard Shields.io palette plus free-form hex picker.
- 100% client-side – No API calls, no tracking, no rate limits. Works offline once the page has loaded.
- One-click copy and SVG download – Export a standalone .svg file to drop into any repo.
Common Use Cases
- Open-source READMEs – Signal build status, version, license, coverage, or download count at a glance.
- Project dashboards – Embed consistent status badges across internal wikis and docs sites.
- Portfolio sites – Decorate project cards with stylized tags without loading external image services.
- Marketing pages – Use “made with” and custom badges as lightweight accent graphics.
- Offline documentation – Ship badges that render even behind firewalls that block shields.io.
Why Generate Badges Locally
Remote badge services are convenient, but they add a network hop every time someone loads your README. When those services slow down, get rate-limited, or change their defaults, your badges silently break. A locally generated SVG is a single static file — it renders anywhere Markdown or HTML does, ships with your repo, and survives service outages. It also gives you full control over colors, spacing, and font weight, so badges can match a consistent visual style across an entire organization.
FAQ
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What is an SVG badge?
An SVG badge is a small vector image that displays a label and a message in a pill-shaped graphic. Because it is vector-based, it stays sharp at any size and can be styled with solid colors, gradients, and anti-aliased text without requiring server-side rendering.
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What is the difference between flat and for-the-badge styles?
Flat is the default compact style with a subtle top-to-bottom shading and rounded corners. For-the-badge is taller, uses bold uppercase lettering, and adds extra horizontal padding, making it more prominent and easier to read from a distance.
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How are SVG badge widths calculated?
Each text side is measured using a font metric calculation — typically the width of each glyph in Verdana 11 — then padded on both sides. The label and message widths are summed to produce the total SVG width so the background rectangles align precisely under the text.
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Why use a data URL instead of a hosted image?
A data URL embeds the entire SVG inside the Markdown or HTML itself, removing any dependency on external hosting. The badge renders instantly with no extra request, cannot break when a service changes its API, and remains visible even when the viewer is offline.
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