Image To Base64 Encoder
Convert images (PNG, JPG, WEBP, GIF, SVG) to Base64 data URI. Decode Base64 strings back to images. Client-side, instant.
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About Image to Base64 Encoder & Decoder Online
Convert any image file to a Base64 data URI for embedding in HTML/CSS, JSON payloads, or email templates. Also decodes Base64 image strings back to viewable images. Preview the result inline. Supported: PNG, JPG, WEBP, GIF, SVG.
Converting an image to a Base64 data URI embeds the image's binary data directly as a text string inside HTML, CSS, or a JSON payload, eliminating a separate network request for that image — useful for small icons, email templates (where external images are often blocked by default), or JSON APIs that need to transmit an image alongside other data in a single payload. The trade-off is that Base64 encoding increases file size by roughly 33% compared to the original binary, so it's best suited to small images rather than large photos, where the extra HTTP request would actually be cheaper. This tool converts any image file to a Base64 data URI instantly and works in reverse too, decoding a Base64 string back into a downloadable image file.
How to use
- Paste or type your input directly into the editor — output updates in real time as you work.
- Check the error/status indicator if your input is invalid; it points to the exact line or issue where relevant.
- Use the copy or download button to grab the processed output once it looks right.
- Chain into a related tool below if your workflow needs a second processing step.
- Processing happens entirely client-side in your browser — nothing you paste is uploaded to a server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
When should I use Base64 images?
For small icons and logos in CSS (avoids HTTP request). Not recommended for large images — Base64 is ~33% larger than binary and increases page size.
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