File to Data URL Converter
Convert any image or file into an inline Base64 Data URL URI for HTML, CSS, React, and Markdown with 100% client-side privacy.
Drag & drop an image or file here
or click to browse from your device
Supports PNG, JPEG, SVG, WebP, GIF, ICO, PDF, and all binary files (Max recommended: 10MB)
What is this tool?
The File to Data URL Converter is a free, privacy-first online utility that transforms local images, vector SVGs, documents, and binary files into inline Base64 Data URIs (RFC 2397). By encoding assets into standard text strings (e.g. data:image/png;base64,...), web developers and designers can embed icons, logos, and fonts directly inside HTML source code, CSS stylesheets, React components, or email templates without making extra HTTP network requests. The tool also includes a bidirectional decoder to preview and restore downloadable files from existing Data URL strings, running 100% client-side with zero server uploads and total data security.
Common Use Cases
HTML Email Newsletters and Signature Embedding
Inline brand logos, icons, and badges directly into HTML email templates and email signatures to ensure graphics render instantly without triggering external asset blocking in email clients.
CSS Stylesheets and React Component Bundling
Embed small UI icons, background patterns, and SVG vector graphics directly into CSS stylesheets or React JSX code to eliminate external HTTP requests and accelerate web page load speeds.
Self-Contained Markdown Documentation and Notes
Embed screenshot illustrations and technical diagrams directly inside standalone Markdown files (.md) for GitHub READMEs, Obsidian notes, and Notion exports without needing external image hosting.
Offline Web Applications and PWA Storage
Store application graphics, audio snippets, and user profile pictures directly in LocalStorage or IndexedDB as text Data URIs for offline caching and instantaneous rendering without network connectivity.
Base64 Data URI Decoding and File Recovery
Paste any raw Data URL extracted from database dumps, web APIs, or source code into the bidirectional decoder to preview the asset and download it as an original PNG, JPEG, or PDF file.
Next.js Blur Placeholder Image Generation
Generate lightweight, micro-sized Base64 blurDataURL strings for Next.js Image components to deliver seamless, smooth blur-up progressive loading effects that enhance Core Web Vitals and user experience.
Frequently Asked Questions
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