Image

Image to Base64 Converter

Embed icons as Base64 data URIs without extra network requests. Processing stays on your device.

How to Use

  1. Choose an image file (PNG, JPG, GIF, WebP, SVG, etc.).
  2. Convert to generate a data URI.
  3. Copy the raw string or ready-made CSS/HTML snippets.

Key Features & Privacy Advantage

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Copy-ready CSS background and HTML img snippets.
  • Uses FileReader.readAsDataURL — no server.
  • Clear size warnings for oversized embeds.

Technical Breakdown

Data URIs inline binary assets as Base64 text. That removes an HTTP request for tiny icons, which can help critical-path CSS, but Base64 expands size by roughly a third and defeats shared browser caching.

FileReader.readAsDataURL produces a string like data:image/png;base64,.... We also wrap it in sample CSS and HTML so you can paste into emails or single-file prototypes quickly.

Avoid embedding multi-megabyte photos. Prefer compressed WebP/PNG under ~10–20 KB for UI chrome. Use Image Resizer first when needed.

Because encoding is local, API keys and confidential screenshots never hit a conversion API.

Frequently Asked Questions

When should I use Base64 images?

Tiny icons and single-file demos. For large photos, normal image URLs perform better.

Is my file uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Can I decode back to a file?

Yes — use Base64 to Image Converter.

Does SVG work?

Yes, when the browser can read it as a file; you will get a data:image/svg+xml URI.