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.
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.
Local processing: your source images stay on this device.
Professional image format converter
Choose the destination once, then convert the whole batch
Convert JPEG, PNG, WebP, AVIF, still GIF frames, and HEIC files from individual files, folders, or ZIP archives. Create several formats per source without changing its pixel dimensions.
- Local conversion
- Source images are not uploaded
- True batch input
- Files, folders, and ZIP archives
- Multiple outputs
- Several formats from each source
Source inspection
Choose an image to inspect its format, dimensions, and file size.
- Images to convert
- 0
- Destination formats
- 1
- Expected outputs
- 0
Destination formats
Choose one or several. Pixel dimensions stay unchanged.
Choose by use caseThis selects a format, not quality or dimensions
How to use
Convert image format — Online image format converter
Batch-convert JPEG, PNG, WebP, AVIF, still GIF frames, and HEIC for free, with several formats per image and private local processing.
Convert one file, a folder, or a ZIP archive
Choose JPEG, PNG, WebP, AVIF, GIF, or HEIC files, select a complete folder, or drop in a ZIP archive. The queue shows a thumbnail, source format, pixel dimensions, and file size so unwanted items can be removed before conversion. Processing takes place in the current browser rather than uploading source images to a conversion server.
Create several formats from every source image
Destination formats are presented as clear multi-select cards. WebP is a practical default for websites, JPEG has the broadest compatibility for photographs, PNG suits lossless screenshots and transparent graphics, and AVIF is useful for modern delivery where support is known. Select several destinations to create each version in one run, then download one file, selected results, or a complete ZIP.
Format conversion without compression controls
This workspace keeps pixel dimensions and visible content unchanged and uses fixed high-fidelity encoder settings. It deliberately omits quality, target-KB, and resizing controls: those belong to compression and resizing tasks. If the converted files must meet an upload limit or new dimensions, pass the results directly to the compressor or resizer without selecting the files again.
Transparency, matching formats, and animation
PNG, WebP, and AVIF can retain transparent pixels. JPEG cannot, so a background colour is selected explicitly whenever JPEG output is enabled. If the requested destination already matches the source format, the original file is kept byte for byte to avoid needless generational loss. Animated GIF input is exported as a still frame; use the GIF editor, extractor, or compressor when animation must survive.
Metadata, colour, and browser limits
Changing format removes EXIF, GPS, camera details, and most embedded metadata while leaving the original untouched. Browser decoding may also normalise HDR or unusual colour profiles to a common display colour space. Very large images and large batches require substantial memory, so inspect the exported format, dimensions, and appearance before publishing, printing, or submitting important files.
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