Image to Base64 Converter

How to Use the Image to Base64 Converter

The Image to Base64 Converter transforms image files into Base64-encoded data URI strings directly in your browser. This is essential for embedding images in HTML, CSS, JSON, or Markdown without requiring separate image file hosting. Everything runs client-side — your images never leave your device.

Step-by-Step

Select an image — Drag and drop an image onto the drop zone, or click to open the file picker. Supports PNG, JPEG, GIF, SVG, WebP, and ICO formats.

Preview the image — The tool displays a preview of your selected image alongside its file size and dimensions.

View the Base64 output — The encoded data URI string appears in the output panel, ready to copy.

Choose the output format — Select between a full data URI (data:image/png;base64,...) or raw Base64 string without the prefix.

Copy to clipboard — Click the copy button to grab the encoded string for use in your code.

Features

Drag and Drop — Simply drag an image file from your file explorer directly into the tool for instant conversion.

Multiple Format Support — Handles PNG, JPEG, GIF, SVG, WebP, ICO, and BMP image formats with automatic MIME type detection.

Data URI Output — Generates a complete data URI string including the MIME type prefix, ready to paste directly into tags or CSS url() declarations.

Raw Base64 Option — Toggle to get just the Base64 string without the data URI prefix, useful for API payloads and database storage.

File Size Display — Shows both the original file size and the encoded string length so you can assess the overhead of Base64 encoding.

100% Client-Side — Uses the browser's FileReader API for conversion. No files are uploaded to any server, ever.

Common Use Cases

Email Templates — Embed small images directly in HTML email templates to avoid broken image links and external hosting dependencies.

CSS Backgrounds — Encode small icons and textures as Base64 data URIs in CSS to reduce HTTP requests and improve page load performance.

Single-File HTML — Create self-contained HTML documents with all images embedded, perfect for reports, invoices, or documentation.

API Payloads — Include image data in JSON API requests when file upload endpoints aren't available or practical.

README Files — Embed small badges, logos, or screenshots directly in Markdown files for GitHub repositories.

Why Use This Tool

Base64 encoding is a common requirement for web developers, but doing it manually with command-line tools or online services can be cumbersome and raises privacy concerns. This tool provides instant conversion with a clean interface, MIME type detection, and output format options — all without uploading your images to a third-party server. It's the fastest way to go from image file to embeddable code.