How to Use

Drag a PNG, JPG, SVG, WebP, or GIF image into the upload area, or click to choose files.
Confirm the image preview, MIME type, original size, and Data URI output size.
Copy the full Data URI, raw Base64 string, CSS background-image, or HTML <img> snippet.
Paste the code into CSS, HTML, email templates, or JSON configuration.

Example: click “Load SVG Sample” to generate a local SVG icon as a Data URI, then copy the CSS or HTML snippet.

Core Features

Instant Data URI Generation: Drop an image and generate a data:image/...;base64,... URI directly in your browser.
Ready-to-Use CSS & HTML: Copy CSS background-image or HTML <img> snippets without writing the Data URI prefix by hand.
Supports Web Image Formats: Works with PNG, JPG, SVG, WebP, GIF, AVIF, and other image formats your browser can read.
Batch Image Queue: Drop multiple icons, email assets, or UI images and copy the exact snippet you need per file.
100% Private Processing: Images are read locally with the browser FileReader API. Nothing is uploaded.

Base64 image encoder/decoder: convert files to Data URLs, decode strings back to downloads, and copy CSS background code—WebP-ready, local & private. Try it.

Base64 to Image Converter - Local Preview

Decode Base64 or Data URI images in your browser, preview instantly, and download as the original file, PNG, JPG, or WebP.

Secure JSON Formatter & Type Generator - Local Type Gen

Secure JSON formatter: format, validate, and fix JSON locally. Beautify/minify, highlight errors, generate TypeScript or Zod, convert to XML—private. Try now.

Free JSONPath Tester & Evaluator | Local Real-Time Queries

Free JSONPath tester and evaluator for API JSON. Extract matching nodes in real time, inspect paths, and copy JSON results while parsing stays local in your browser.

JSON to CSV Converter - Local Spreadsheet Export

Convert JSON objects or arrays to CSV locally in your browser. Flatten fields, preview the result, then copy or download CSV without uploading data.

CSV to JSON Converter - Local Real-Time Parser

Convert CSV text or files to JSON arrays locally in your browser. Supports headers, comma/semicolon/tab delimiters, drag-and-drop files, copy, and download with no uploads.

JSON Diff Checker - Local Semantic Compare

Compare two JSON documents locally in your browser. Sort object keys for a semantic diff, ignore key-order noise, and mark added, removed, and modified fields without uploads.

JSON Minifier & Compressor

Minify JSON into one line, remove indentation and line breaks, and compare original size, minified size, saved bytes, and saved percentage.

Calculation Logic

Base64 encoding turns binary image data into an ASCII string, which lets images be embedded directly in HTML, CSS, or JSON. A Data URI follows the shape data:[mime-type];base64,[encoded-data], and browsers can read it as an image resource.

Important trade-off: Base64 is not image compression. Encoded output is usually about 33% larger than the original file, so it is best for small icons, logos, email images, or reducing a small number of HTTP requests. Large photos and many assets should usually remain as normal image files and be compressed separately.

FAQ

Why convert an image to Base64?

It is useful when you want to embed small icons, email images, or configuration images directly in code, reducing external requests or avoiding blocked remote email images.

Does Base64 reduce image size?

No. Base64 usually increases the encoded size by about 33%. It helps with embedding and request reduction, not storage compression.

What image formats are supported?

PNG, JPG, JPEG, SVG, WebP, GIF, AVIF, and any image format your browser can read.

Are my images uploaded?

No. Conversion uses the browser-native FileReader.readAsDataURL API, so files stay on your device.

Can I copy CSS or HTML directly?

Yes. Each image gets a full Data URI, raw Base64 string, CSS background-image, and HTML <img> snippet.

Image to Base64 Converter - Generate Data URIs Locally

Conversion Results