Image to Base64 & Base64 to Image
Convert photos into Base64 Data URI strings or reconstruct images from raw Base64 code.
How to Use Image to Base64
- Choose your mode: 'Image to Base64' or 'Base64 to Image'.
- In Image mode, drop your picture to generate full Data URI strings with 1-click HTML and CSS snippets.
- In Base64 mode, paste encoded text to preview and download the reconstructed file.
- Click 'Copy' to copy strings directly to your clipboard.
Technical Specifications & How It Works
Base64 converts binary image bytes into 64 safe ASCII characters, allowing direct embedding into HTML img tags, CSS background-image rules, and JSON payloads.
Embedding small icons as Base64 eliminates redundant HTTP round-trips and improves initial page load speed.
100% Client-Side Privacy: Your images never leave your computer or phone. Processing runs completely in local browser memory via WebAssembly and Canvas APIs. No file data, filenames, or metadata are ever transmitted.
Frequently Asked Questions
When should I use Base64 images?
Base64 is ideal for small icons, favicons, email signatures, and single-file HTML documents.
Does Base64 increase file size?
Base64 encoding increases data volume by approximately 33% due to representing 3 binary bytes as 4 ASCII characters.
Can I decode raw Base64 strings without headers?
Yes, the decoder automatically prepends standard PNG headers if omitted.