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Image ➝ Base64100% Client-Side

Image to Base64

Drop or pick an image and it becomes a Base64 data URI instantly. All reading happens in your browser — the image never leaves your device.

Drop your Image file here, or browse

Drag & drop or click to select from your device

Maximum file size: 20 MB

How to

How to convert image to Base64 string online for free

  1. 1Select or drop your image file onto the converter — it stays in your browser.
  2. 2Adjust the optional settings, such as quality, size or output options.
  3. 3Click Convert — the file is processed locally on your device.
  4. 4Download your Base64 string file. It is ready in seconds.
FAQ

Frequently Asked Questions

Answers to the most common questions about Convrs.

How do I convert image to Base64 string for free?
Select your image file (or drag and drop it), click Convert and download the Base64 string result. There is no sign-up, no cost, and the file never leaves your browser.
Is Image to Base64 private and secure?
Yes. Image to Base64 runs entirely in your browser, so your data never leaves your device — nothing is uploaded or stored on a server.
Why turn an image into Base64?
Images embedded as Base64 data URIs can be inlined directly into HTML, CSS or JSON — perfect when you cannot host separate image files.
What is Base64?
Base64 encodes text or binary data into safe ASCII characters, so data can travel through text-only channels, emails or JSON without corruption.
What is the maximum file size?
20 MB per file. Because everything runs in your device's memory, very large files can slow down or freeze the browser.

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About this tool

Why convert image to Base64 string in your browser?

Image to Base64 takes your image and turns it into Base64 string — completely inside your browser. No install, no account, no watermark: you select or drop a file, review the settings, and download the result seconds later. Your files stay on your device.

People rely on image conversion for everyday tasks: shrinking photos for the web, preparing assets for print or e-commerce, or matching a platform's required format. Because the work happens locally, you keep full control over quality and your originals are never sent anywhere.

Privacy by construction: Image to Base64 runs entirely in your device's memory. Your files, text and data are never uploaded, stored or logged by us — there is no server in the path.

Up to 20 MB per file
100% in-browser — nothing is uploaded
No account or sign-up required
Free to use, no watermarks
Runs on desktop and mobile browsers
Your source data is never stored or logged
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