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Data URI to Image Converter

Convert Base64 Data URIs back to downloadable images, or generate CSS, HTML, and raw Base64 Data URIs from uploaded images.

Last updated: May 25, 2026

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Paste Data URI / Base64 Code

Try with a Sample Data URI:

Image Preview Frame

Paste a valid base64-encoded Data URI in the input box to instantly render the image, analyze its attributes, and download it locally.

Data URI to Image Converter — No Uploads Required

A professional, security-focused Developer tool designed to handle Data URIs (Base64) in both directions. Decode any base64 image string back to a clean visual rendering, inspect its underlying MIME type, file size, character count, and export it instantly to high-quality PNG, JPG, or SVG files. Or, upload images locally to generate clean production-ready assets: copy as raw Base64, complete HTML img tags, CSS background-image rules, or Markdown embed formats. When processing SVGs, the tool also offers smart UTF-8 URL optimization, giving you readable text-based data strings that are roughly 30% smaller than Base64 equivalents. Executed 100% locally in your browser for absolute confidentiality.

Base64 to Image Decoding: Paste Data URIs to view, inspect, and export images

Image to Base64 Encoding: Drag and drop files to instantly generate Data URI strings

Multiple Snippet Exports: Copies code as Data URI, HTML img tags, CSS rules, Markdown embeds, or raw Base64

MIME & Size Analysis: Real-time calculation of string length, MIME-type, and final binary file size

Smart SVG Optimization: Output UTF-8 URL-encoded SVG strings instead of base64 for 30% smaller sizes

Lossless File Exporter: Download decoded strings as original formats or compile to PNG/JPG

Checkerboard Canvas Frame: Clear rendering of transparent alpha channels

100% Secure & Client-Side: Zero server roundtrips; your source data never leaves your browser

Why This Tool Exists

What makes this useful — and why I built it this way.

Zero Server Uploads: Securely convert proprietary graphics and layout assets locally without data leakage.

Developer Efficiency: Copy correctly formatted HTML, CSS, or Markdown codes in one click.

Optimization: Leverage UTF-8 URL encoding for SVGs to keep stylesheets compact and readable.

When You'd Use This

Real situations where this tool saves the day.

Base64 Debugging: Check the visual contents of a base64 string from a database or JSON payload.

Email Templates: Inline images as Data URIs directly in HTML emails to avoid external asset blockages.

CSS Optimization: Embed background icons directly in stylesheets to save extra HTTP server requests.

Using Data URI to Image Converter

It's straightforward — here's how it works.

Step 1

To Decode: Switch to the 'Decode' tab, paste a Data URI (e.g., data:image/png;base64,...), inspect details, and click download.

Step 2

To Encode: Switch to the 'Encode' tab, upload your photo or document, and select from the code snippet tabs.

Step 3

Copy Snippet: Click 'Copy' next to any code snippet block to save it to your clipboard with immediate visual feedback.

Step 4

For SVGs: Toggle the 'Optimize SVG' switch to get a human-readable and compact text-based Data URI.

Questions People Ask

Honest answers about how this works.

What even is a Data URI?

Short answer: A Data URI (Uniform Resource Identifier) is a scheme that allows you to embed files—such as images—directly in-line within web documents (HTML, CSS) as a base64-encoded or URL-encoded string, bypassing the need for separate HTTP resource requests.

Why is UTF-8 URL encoding recommended for SVGs?

Honestly? SVGs are text files (XML). Encoding them to Base64 creates a large binary-like string. Since it is already text, we can use simple URL-encoding (like encodeURIComponent) which results in a human-readable, editable string that is roughly 30% smaller than Base64.

Is there any a size limit for encoding/decoding?

Imgira performs all calculations in-memory within your browser. There is no strict upload limit, but strings larger than 10-20MB may cause brief UI latency depending on your browser's RAM capacity.