Image to Base64 Converter
Runs in your browser — your files are never uploaded.
Turn an image into a Base64-encoded data URL, ready to paste directly into HTML, CSS, or JSON — useful for embedding small images without a separate file request. Runs entirely in your browser.
How to use Image to Base64 Converter
- 1
Drop your image onto the box, or click to choose one.
- 2
OkConverter encodes it as a data: URL locally.
- 3
Copy the result, or download it as a .txt file.
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Embed this tool on your site
Paste this where you want the tool to appear. It runs entirely in your visitor's browser — no uploads, no account, no tracking.
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Frequently asked questions
What format is the output?+
A complete data URL like `data:image/png;base64,iVBORw0KG...` — ready to paste directly into an `<img src>`, a CSS `background-image: url(...)`, or a JSON field.
Is Base64-encoding an image a good idea for large files?+
Base64 adds roughly 33% to the file size and embeds it inline, which is great for small icons/logos but generally a bad idea for large photos — those are better served as separate files.
Is my image uploaded anywhere?+
No. Encoding runs entirely in your browser — nothing is sent to a server.