Image to Base64 Converter
Convert images to Base64 encoded strings. Get data URIs ready for CSS, HTML, or API payloads.
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PNG, JPG, GIF, SVG, WebP, ICO
Image Info
About this tool
Converting images to Base64 produces a self-contained data URI that embeds the image directly in HTML, CSS, or JSON without a separate file request. The result starts with data:image/png;base64, followed by the encoded data.
Embedding small icons and logos in CSS to reduce HTTP requests, including images in JSON API payloads, creating self-contained HTML email templates, and encoding images for data URIs.
Frequently asked questions
When should I use Base64 images vs regular files?
Base64 is best for small images under 5-10 KB where eliminating an HTTP request outweighs the size increase. For larger images regular files are always better — Base64 increases size by 33% and cannot be cached separately.
Why is my Base64 image not displaying?
Common issues: missing or incorrect MIME type prefix (data:image/png;base64, for PNG), extra whitespace in the string, or corrupted encoding. This tool generates the complete ready-to-use data URI.
Which formats can be converted?
Any format your browser supports: PNG, JPG/JPEG, GIF, SVG, WebP, ICO, BMP. SVG encoded as Base64 is particularly useful for CSS backgrounds and HTML img src attributes.