Free online tool to convert images to Base64 encoded strings. Upload JPEG, PNG, WebP, or GIF images and get Base64 data URLs instantly. Perfect for embedding images in HTML, CSS, JSON, or API requests. All processing happens in your browser - your images never leave your device.
Converting images to Base64 is simple and fast:
Base64 encoding converts binary image data into ASCII text format using 64 characters. This allows images to be embedded directly in text-based formats like HTML, CSS, JavaScript, JSON, or XML without needing separate image files. Base64 images start with 'data:image/[format];base64,' followed by the encoded string.
Base64 encoding is useful when you need to embed images directly in code, reduce HTTP requests, include images in JSON/XML data, use images in email templates, or store images in databases as text. It's especially useful for small images, icons, or when you want everything in a single file.
Base64 is a binary-to-text encoding scheme that converts binary data (like images) into ASCII text format using 64 characters. It's commonly used to embed images and other binary files directly in text-based formats like HTML, CSS, JSON, or XML.
The tool supports all common image formats including JPEG, PNG, WebP, and GIF. The format is automatically detected from your uploaded image and preserved in the Base64 data URL.
Yes! All conversion happens entirely in your browser using JavaScript. Your images are never sent to any server, stored anywhere, or seen by anyone else. Complete privacy guaranteed.
Base64 images work well for small images (under 10KB typically). For larger images, regular image files are more efficient as Base64 increases file size by about 33% compared to binary format. Use Base64 for small icons, logos, or when embedding is necessary.
The tool can handle images of reasonable size. Very large images (over 10MB) may cause browser performance issues. For best results, keep images under 5MB. Remember that Base64 strings are about 33% larger than the original image file.
Currently, the tool processes one image at a time to ensure quality and privacy. For multiple images, convert them one by one. This approach ensures each conversion gets proper handling.
A data URL includes the format prefix (like 'data:image/png;base64,'), while raw Base64 is just the encoded string. Our tool provides the full data URL format which is ready to use directly in HTML img tags or CSS.