Free Bulk Image to Base64 Converter
Turn lots of images into Base64 text you can paste straight into HTML, CSS, JSON or emails. Or paste Base64 and get the image files back. Everything happens in your browser, so nothing is uploaded.
Quick human check, then the tool unlocks:
Drop images or whole folders here
PNG, JPG, GIF, WebP, SVG, ICO, AVIF, BMP. Small images (icons, logos) work best.
How to convert images to Base64 in bulk
- Drop in your images, or press Choose a folder.
- Choose the output: a data URL, an HTML tag, CSS and more.
- Press Convert. Copy any single result, or download everything as one file.
🔒 Your images are converted by your own browser and are never uploaded to our server.
When to use Base64 images
- Small icons and logos inside CSS or HTML, saving an extra download.
- HTML emails and single-file pages that must work offline.
- JSON and APIs that need to carry an image as text.
- Base64 is about a third bigger than the original file, so it isn't a good idea for large photos.