Base64 Image Converter Lab
Convert images to Base64 and back inside the browser — perfect for inlining assets securely.
Optimized for assets under 10 MB such as UI icons or small textures
Drag a file here or tap the area to browse
Supported: JPG · PNG · WebP · GIF · SVG · BMP · ICO · TIFF
Turn on for drop-in CSS/HTML usage, turn off to keep the raw Base64 only.
Upload an image to view the encoded output.
background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUg...");HTML inline usage
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUg..." alt="inline image" />Nothing leaves your browser which keeps sensitive artwork safe.
Base64 payloads are ~30% larger, so avoid huge banners or photos.
Enable the prefix switch to paste directly into CSS backgrounds or img tags.
Keep assets lightweight (<1 MB) for snappy copying and rendering.
Pro tips
What is Base64 Image Converter
A two-way lab for images and Base64: drop in an image to get its DataURL/Base64 string, or paste a string to preview the decoded picture. Everything happens in browser memory — handy for debugging embedded assets and API payloads. Sign-in required.
How to use Base64 Image Converter
- Upload an image, or paste a Base64 string
- Pick the direction (image → Base64 or decode back)
- Copy the result or preview the restored image
Frequently asked questions
How much bigger is a Base64 image?
About 33% — three bytes of data become four characters, and the string can't be cached independently. Keep it for small icons and API payloads; use real files for large images.
Is my image uploaded to a server?
No — encoding and decoding run in browser memory; the image never leaves your device.
Can I paste the output straight into HTML?
Yes — the result includes the data:image/...;base64 prefix, ready for an img src or CSS url(). Strip the prefix if your target wants the raw encoding only.
Is Base64 Image Converter free?
Base64 Image Converter is completely free — open the page and use every feature with no hidden charges.
Do I need to download or install Base64 Image Converter?
No download or installation is needed. It is an online tool that runs in the browser on your phone, tablet and computer.
Do I need an account to use Base64 Image Converter?
No. Use the tool right away — no account or sign-in required.
Does Base64 Image Converter work on mobile?
Yes. The page is fully responsive and works on phones, tablets and desktop browsers.