Small assets need fast inlining
Use Data URI Generator when icons, tracking pixels, placeholder SVGs, or text snippets are small enough to embed directly.
Free Developer Tool
Data URI Generator Inline Assets for HTML and CSS
Free Data URI Generator for frontend developers. Upload PNG, JPEG, SVG, fonts, or paste text, then create Base64 or URL encoded Data URIs for HTML img src, CSS background-image, and inline assets.
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Data URI Generator Problems This Tool Solves
Inline small frontend assets without switching between encoders, MIME references, and snippet templates.
Manual MIME strings are easy to miss
Detect common types and edit the MIME value before copying production snippets.
Private assets should stay local
Read files in your browser so unreleased icons and small UI resources do not need a server upload.
Data URI Generator Features
Handle file input, text input, MIME detection, encoding choice, preview, and copy-ready output in one local workflow.
Upload files or paste text
Add PNG, JPEG, WebP, SVG, plain text, JSON, CSS, WOFF, WOFF2, or another small resource.
Automatic encoding choice
Prefer URL encoding for SVG and text, and Base64 for images, fonts, and binary files.
Editable MIME type
Override the MIME type when a file has no reliable browser-provided type.
Copy three snippet styles
Copy a plain Data URI, CSS background-image declaration, or HTML img src attribute.
Live preview and stats
Preview image, SVG, and text-like output while checking source bytes and output length.
Browser-only workflow
Generate, preview, and copy Data URIs locally without uploading files.
How to Use Data URI Generator
Use Data URI Generator to turn a small resource into an HTML or CSS snippet in a few browser-only steps.
01
Add your resource
Paste text or SVG markup, or upload a PNG, JPEG, SVG, font, or text file.
- Local only - no upload
02
Check the MIME type
Confirm image/png, image/jpeg, image/svg+xml, text/plain, font/woff2, or another MIME type before output.
- Local only - no upload
03
Choose encoding
Leave Auto on for most assets, or force Base64 or URL encoded output when your project needs it.
- Local only - no upload
04
Copy the snippet
Use the plain Data URI, CSS background-image, or HTML img src output directly in your frontend code.
- Local only - no upload
Data URI Generator Workflows
Support everyday frontend workflows for icons, SVGs, text snippets, and small static resources.
Upload small frontend assets
Drop a PNG, JPEG, SVG, WOFF2 font, or text file and prepare it for inline use.
Pick Base64 or URL encoded output
Use automatic encoding or force the format your HTML, CSS, email, or prototype requires.
Copy HTML and CSS snippets
Copy a full CSS background-image, HTML img src, or plain Data URI without rebuilding the string by hand.
Data URI Generator Use Cases
Use this workflow when a tiny resource should travel with the HTML or CSS instead of becoming a separate request.
Inline SVG icons
URL encode a small SVG icon and paste it into CSS or HTML without a separate asset file.
Single-file prototypes
Embed small images or text resources into an HTML prototype that needs to be shared as one file.
Email and documentation snippets
Prepare small image or SVG Data URIs for examples, docs, and controlled email experiments.
Data URI Generator FAQ
Common questions about encoding, MIME types, browser use, and local processing.
Does this tool upload my files?
No. Files are read with browser APIs and the Data URI is generated locally.
When should I use Base64?
Use Base64 for PNG, JPEG, WebP, fonts, and other binary resources.
When is URL encoding better?
URL encoding is usually readable and compact for SVG, CSS, JSON, and plain text resources.
Are Data URIs good for large files?
Usually no. Data URIs are best for small assets because large inline strings can bloat HTML or CSS and reduce cache flexibility.
Start Using Data URI Generator
Upload or paste a resource, choose Base64 or URL encoded output, and copy Data URIs for HTML and CSS.
Free forever - browser-only Data URI Generator.