Convert image format
Batch-convert JPEG, PNG, WebP, AVIF, still GIF frames, and HEIC for free, with several formats per image and private local processing.
Image and Base64 converter
Convert image files to Data URLs and decode image Data URLs back to files, with a copyable text result and a downloadable image preview.
Local processing: your source images stay on this device.
Files
0 · 0 selected
No images selected yet.
Settings
ID photo compositionOn-device detection only suggests a crop; you can still adjust it before export.
This image’s crop has not been confirmed.
ID photo backgroundOptional on-device portrait cut-out; the original never leaves your device.
Dimensions
Preset sizeCommon platform sizes
Select one or more sizes; each image is exported in every selected size.
Icon safe area
One composition generates favicon, PWA and common app sizes, plus a manifest.
Crop areaDrag the box to resize or reposition it
Rotation0°
Quality
Padding on each sidepx
Upscale imageReal-ESRGAN · 2×
Frame rangeLeave the last frame blank to use the rest.
Base64 increases data size. This tool limits input to protect browser memory.
Image to Base64
How to use
Image and Base64 converter
What this tool is for
Convert image files to Data URLs and decode image Data URLs back to files, with a copyable text result and a downloadable image preview.
How to use it
For image-to-text, choose a file and copy or save the complete Data URL. For text-to-image, paste a complete Base64-encoded image Data URL with an image/ media type, then verify the preview before downloading. Base64 is best reserved for small embedded assets and API examples.
Results and next steps
Encode mode returns a copyable Data URL; decode mode returns a previewable image file. The entered source remains visible for verification.
Privacy and local processing
Processing runs in your browser. Source images are not uploaded by this tool.
Before you start
Your browser must decode images into memory. Very large files, long animations, and large batches may require substantial memory. Check the preview and export details, and verify the latest official requirements before submitting identity, application, or print-ready images.
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