Image to Base64 converter for data URLs, HTML, and CSS.
Convert PNG, JPG, WebP, GIF, SVG, or AVIF files to Base64 without uploading them. Copy the full data URL, raw Base64, an HTML image tag, or a CSS background snippet.
Drop an image here.
Converts locally in your browser. Nothing uploads to splitforms. Best for small icons, logos, inline SVGs, and email-safe image snippets.
Good fit
Small icons, SVGs, tiny logos, email snippets, one-file prototypes, and CSS demos.
Bad fit
Large photos, user-submitted uploads, galleries, assets that should be cached, and anything over a few KB.
Form uploads
Use multipart/form-data and file inputs for real submissions. Base64 is heavier and harder to validate server-side.
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Form file uploads
Accept resumes, screenshots, PDFs, and images in submissions.
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Learn input type=file, accept, multiple, and multipart encoding.
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What is an image to Base64 converter?
An image to Base64 converter reads an image file and encodes the bytes as text. The result can be used as a data URL in HTML, CSS, JSON, or email templates without hosting the image as a separate file.
Are my images uploaded to splitforms?
No. This tool runs entirely in your browser with FileReader. The selected image never leaves your device, and the Base64 output is generated locally.
When should I use a Base64 image?
Use Base64 for small icons, inline SVGs, tiny logos, email snippets, or quick prototypes. Avoid Base64 for large photos because it increases file size and prevents normal browser image caching.
Can I use Base64 images in HTML forms?
Yes, but for real file uploads you should use input type=file with enctype=multipart/form-data. Base64 is useful for preview images and small embedded assets, not for large customer uploads.