Image to Base64 Encoder
Encode images to Base64 strings or data URIs for CSS, HTML and JSON embedding. Copy or download the text instantly.
About the Image to Base64
Embedding small images as Base64 data URIs eliminates extra HTTP requests and works everywhere — CSS backgrounds, email templates, JSON payloads, single-file HTML. This encoder reads your file bytes locally and produces either raw Base64 or a complete data URI to copy.
How it works
The tool reads your image file's raw bytes and encodes them to Base64 text — either as a bare string or as a complete data: URI ready to paste into an img src or CSS background. Encoding is a pure byte transformation: decode it later and you get the identical file back.
How to use it
Drop one image, toggle the data-URI format on if you want the ready-to-use wrapper, and encode. Copy the output to your clipboard or download it as a .txt file.
Supported formats & limitations
Accepts .jpg, .png, .webp, .gif and .svg up to 30MB; single file per run. Base64 inflates size by about 33%, so it shines for small icons and inline SVG — embedding large photos this way bloats documents and hurts caching.
Common use cases
Inlining tiny logos and icons to eliminate extra HTTP requests, embedding images in single-file HTML emails or READMEs, passing images inside JSON APIs, and storing small graphics in stylesheets for offline tools.
Frequently asked questions
How private is Image to Base64?
Everything runs locally in your browser via the Canvas API. Your picture never leaves your machine — there is no upload step at all, so processing is as private as working in an offline editor.
Which file types are supported?
JPG, PNG, WEBP, GIF or SVG+XML files up to 30 MB each are accepted. Drop a single file in (paste and drag also work), check the preview, and export in the format shown at the download step.
How many images can I process at once?
There are no artificial limits: use it as often as you like, free. The practical cap is 30 MB per image, and outputs stay watermark-free.
Can I fine-tune the result before downloading?
You can adjust Include data URI prefix. Results are previewed after processing, so tweak values and re-run until the output looks right.
When should I use Base64 instead of an image file?
Base64 embeds the image directly into HTML, CSS or JSON — useful for small icons, email templates and single-file demos. It makes files roughly 33% larger than the binary image, so keep it for small graphics, not photos.
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