ToolzyLab
Convert images, SVGs, fonts, CSS, JavaScript, JSON, text files, and other assets into Base64 Data URIs instantly. Preview supported files, copy ready-made snippets, and embed files directly into HTML, CSS, or JavaScript — all locally in your browser.
Upload a file or paste raw text, generate a clean Data URI, preview the result, and instantly copy production-ready snippets for HTML, CSS, or JavaScript. Great for small assets, email templates, SVG icons, logos, fonts, placeholders, demos, and self-contained files.
Use images, SVG, text, JSON, CSS, JS, fonts, or other small assets to generate a Data URI instantly.
🖼 images · 📝 text files · 🎨 svg/css · 🔤 fonts · 📦 browser only · ⚡ instantPaste text on the left or use uploaded file content, then generate a clean Data URI and inspect the primary output on the right.
Preview supported files like images and inspect useful stats such as extension, MIME type, dimensions, and output size.
They work great for tiny icons, inline SVGs, email markup, demo components, web prototypes, favicon alternatives, and self-contained UI blocks. For bigger files, regular file URLs are usually better because Base64 increases size.
Copy production-ready code blocks for HTML, CSS, and JavaScript instantly.
This tool runs fully in your browser. Files are read locally and nothing is uploaded to any server.
A data URI embeds content directly in a URL using percent encoding or Base64. Select a file or text value, verify MIME type, charset, name, and snippet format, and prefer UTF-8 SVG only when its escaping is valid. Compare final length and maintenance cost before placing the result in HTML, CSS, JSON, or a test fixture.
A data URI begins with the data scheme, optional media-type and charset parameters, an optional Base64 marker, and the encoded data after a comma. A wrong MIME type can make the consumer interpret bytes incorrectly. Text and SVG may use percent-encoded UTF-8; arbitrary binary normally needs Base64.
Base64 expands binary data, and the generated URI travels wherever the surrounding HTML or CSS travels. Small icons or self-contained examples can be practical. Large images, fonts, PDFs, or reusable assets make source files unwieldy and must be downloaded again whenever the parent changes.
An SVG or HTML data value can contain active or style-affecting content depending on where it is used. Content Security Policy may block data schemes, and user-controlled payloads can create injection risk. Use trusted input, the correct destination syntax, and ordinary file URLs when security policy or reuse favors separation.
Test the complete snippet in the exact HTML, CSS, or application context that will consume it.
Technical references: MDN reference for data URLs
It is a URL that carries media type and encoded content directly instead of pointing to a separate network resource. The consumer decodes the payload in place.
Use Base64 for arbitrary binary. Plain text and carefully escaped SVG can use percent-encoded UTF-8, which may remain more readable. Test the exact consumer.
Base64 represents three input bytes with four text characters, plus the prefix. Transport compression may help repeated text, but the source representation still grows.
Avoid it for large or frequently reused assets, files that need independent caching, user-controlled active content, or environments whose Content Security Policy blocks data schemes.
Yes when it is correctly escaped for the CSS url context and the SVG is trusted. Test quotes, hashes, spaces, parentheses, encoding, and browser behavior.
Generation can run locally in the browser, but the resulting URI contains the file data. Anyone who receives the snippet can decode it, so do not publish sensitive content.