Convert Image to Base64
Convert any image to a Base64 encoded string. Generate data URIs, CSS background code, and HTML img tags ready to use in your projects.
Drop an image here or click to browse
Supports JPG, PNG, WebP, SVG, GIF, and more
All processing happens locally in your browser. Your images are never uploaded to any server.
How to Convert Image to Base64
Upload Your Image
Click or drag and drop your image file. Supports all common image formats including JPG, PNG, WebP, SVG, and GIF.
View Encoded Output
Instantly see your image converted to Base64. Switch between Data URI, raw Base64, CSS background, and HTML img tag formats.
Copy and Use
Click the Copy button to copy the encoded output to your clipboard. Paste it directly into your code, email, or application.
Use Cases for Base64 Images
Email Embedding
Embed images directly in HTML emails without external hosting. Base64-encoded images ensure recipients see your images regardless of email client settings or blocked external content.
CSS Backgrounds
Use Base64 images as CSS background images to reduce HTTP requests. Perfect for small icons, patterns, and UI elements that need to load instantly with the stylesheet.
Small Icons & Sprites
Embed tiny icons and sprites directly in your HTML or CSS. Eliminates extra network requests for small assets and ensures icons display immediately on page load.
API Payloads
Send images as Base64 strings in JSON API requests. No need for multipart form uploads - simply include the encoded string in your API payload for seamless image data transfer.
Data Visualization
Embed chart images and data visualizations directly in reports and dashboards. Base64 encoding ensures visual content is self-contained and displays correctly offline.
Offline Applications
Store images as Base64 strings in local storage or databases for offline web applications. Ensures all visual assets are available without network connectivity.
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that converts binary data (like images) into ASCII text. It uses 64 printable characters (A-Z, a-z, 0-9, +, /) to represent binary data, making it safe to embed in HTML, CSS, JSON, and other text-based formats.
How much larger is a Base64 encoded image?
Base64 encoding increases data size by approximately 33%. A 30 KB image becomes roughly 40 KB when encoded. This is because every 3 bytes of binary data are converted to 4 Base64 characters. The Data URI prefix adds a few more bytes.
When should I use Base64 images vs regular image files?
Use Base64 for small images (under 10-20 KB) like icons, logos, and UI elements where reducing HTTP requests matters. For larger images, regular files with proper caching are more efficient as Base64 strings cannot be cached separately and increase document size.
Is it safe to convert images to Base64 here?
Yes, completely safe. All conversion happens locally in your browser using JavaScript. Your images are never uploaded to any server. No data leaves your device, ensuring complete privacy and security.
What image formats can I convert to Base64?
You can convert any image format supported by your browser, including JPG/JPEG, PNG, WebP, SVG, GIF, BMP, ICO, and AVIF. The tool preserves the original MIME type in the Data URI output.
Convert Your Images to Base64 Now
Instantly encode images to Base64 for embedding in HTML, CSS, and APIs. Free, fast, and private.