RefineDoc
✦

Convert Image to Base64 — Inline Images Instantly

Eliminate HTTP requests by embedding images directly into your code. Our secure FileReader API processing stays in your browser for 100% privacy and blazing speed.

security
speed
CSSHTMLRaw

.hero-image {

background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA...

...mCCyYV67S8z9kAAABJRU5ErkJggg==');

}

upload_file
data_object
css
code
terminal

1

Upload Image

Drag & drop or select any JPG, PNG, WebP, or SVG from your device.

2

Pick Format

Choose between raw Base64, CSS background, HTML tag, or JSON object.

3

Copy & Paste

Instantly copy the generated snippet and paste it directly into your source code.

data_object

iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJ...

css

background-image: url('data:image/png;base64,iVBORw0KG...');

code

<img src="data:image/png;base64,iVBORw0KG..." alt="Base64 Image" />

terminal

{ "image": "data:image/png;base64,iVBORw0KG..." }
BrowserServer

  • check_circle
  • check_circle
  • check_circle

image

image
double_arrow
javascript
double_arrow
B64

task_alt

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cancel

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email

auto_awesome

smartphone

api

offline_pin

settings

Is there a file size limit?expand_more
While we don't strictly limit file size, Base64 strings are ~33% larger than the original file. We recommend staying under 1MB for web performance.
Are my images uploaded to your server?expand_more
No. All processing happens locally in your browser. We never see your images, ensuring 100% privacy and security.
Will I lose image quality during conversion?expand_more
No, Base64 encoding is a lossless process. Your image data remains exactly the same as the original file.
Which format is best for web performance?expand_more
SVG is best for icons and logos. For photographs, use WebP or optimized JPG before converting to Base64 to keep the string short.
Does it support batch conversion?expand_more
Currently, we focus on single-file precision to ensure instant previews, but you can quickly process multiple files one by one.
Can I convert JPG to transparent PNG?expand_more
Base64 represents the source data. To add transparency, you should convert your JPG to PNG using an image editor before encoding.
Is there a watermark on converted images?expand_more
No. RefineDoc provides clean, professional output with no watermarks or hidden metadata added.