Image to Base64

Convert an image file to a Base64 data URL in your browser with LocalKit. Embed assets locally—image bytes are not uploaded for computation.

Interactive controls load with JavaScript. Processing stays in your browser—nothing is uploaded.

Loading tool…

How to use

  1. Open the tool — Open this LocalKit page and wait for the interactive controls to load.
  2. Provide input — Paste or type your content (or set options). Data stays in the browser.
  3. Run the action — Use the primary button or live controls to generate the result.
  4. Copy the result — Copy the output into your editor, terminal, or documents.

Limits

Requires JavaScript. Extremely large inputs may slow the browser tab. Results depend on your browser APIs; there is no server-side processing quota because nothing is uploaded.

When to use

When you want a quick, free utility without creating an account or sending content to an online converter.

When not to use

When you need server-side integration, batch automation at scale, or certified compliance tooling.

Privacy note

Tool inputs are processed in your browser only. Theme, language and favorites may use localStorage; hosting may keep standard access logs (IP, UA, URL) without tool payloads.

FAQ（5）

Is my image uploaded?

No. Conversion to/from Base64 stays on your device.

Why is the string so long?

Base64 expands binary ~33%. Prefer files for large images.

Data URL format?

Often data:image/png;base64,... for embedding in CSS/HTML.

Browser memory limits?

Huge images may strain the tab—resize first when possible.

Security tip?

Base64 is not encryption; anyone can decode the image data.