Convert Base64 to PNG Online — Decode Data URIs into Images
Paste any Base64 encoded string or Data URI to instantly decode, preview, and download the full-resolution PNG image file onto your computer.
How to convert Base64 to PNG online without uploading?
To convert Base64 to PNG privately in your browser: 1. Drag and drop your Base64 file into the workspace below. 2. Your browser's WebAssembly and Canvas engine decodes and re-encodes the image locally in device RAM. 3. Click Download PNG to immediately save your converted image without uploading the file.
When converting Base64 to PNG on llmscope.link, your files are decoded and re-encoded entirely within your computer’s browser sandbox via the HTML5 Canvas API and WebAssembly. No image files or telemetry packets are ever uploaded, logged, or retained on any remote server.
| Specification | Base64 (Source) | PNG (Target) |
|---|---|---|
| Compression Mechanism | ASCII encoded text | Standard binary PNG container |
| Alpha Transparency | Encoded in string | Preserved with clean alpha channel |
| Animation Support | Static only | Static only |
| Browser Support | Text format | 100% universal across all viewers |
| Typical Data Delta | ~25% reduction compared to raw text characters | |
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Paste Base64 string
Paste your raw Base64 string or full data:image/... URI.
Instant decode
The browser decodes base64 bytes into image bitmap.
Inspect dimensions
View the live rendered graphic and pixel dimensions.
Download PNG
Click Download to save the decoded file as a .png image.
Q:Does the string need the "data:image/png;base64," prefix?
Our converter accepts both raw Base64 strings and complete Data URIs with MIME prefixes.
Q:Is my secret image data safe?
Yes! Unlike server-based converters that log your inputs, decoding executes locally in your browser memory.