What is an image Base64 string?
It is the binary image data encoded as text so it can be pasted into HTML, CSS, JSON, or another text-only destination.
Convert Image to Base64
Convert any image into a Base64 string or data URL directly in your browser. Copy the output for use in CSS, HTML, JSON, or API payloads.
Upload an image
Convert a local image into a raw Base64 string or a full data URL without sending it to a server.
When Base64 image conversion is useful
Base64 is useful when an image needs to travel through a text-only workflow: inline CSS, HTML email snippets, JSON fixtures, quick demos, or documentation examples. It keeps the image and the markup together, which is convenient for small assets and prototypes.
The tradeoff is file size. Base64 output is usually larger than the original file, so keep regular image files for production pages unless embedding the asset is genuinely useful.
Practical Guide and FAQ
Key details before copying the converted output.
Should I use a raw Base64 string or a full data URL?
Use the raw string when another system already knows the MIME type. Use the full data URL when pasting into HTML, CSS, or previews that need the prefix.
Does this upload my image?
No. The conversion happens in your browser by reading the selected file locally.
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