Convert a batch of static JPG, PNG, or WebP images within the limits shown below. Choose one output format and quality, preview the first result, and download each converted image or the complete ZIP.
or drop images here
Up to 20 images · 25 MiB each · 100 MiB combined
Up to 16,384px per side and 40,000,000 total pixels
Yes. Transparent pixels are flattened onto a white background in the JPG output.
Yes. Converting JPEG to PNG does not restore image detail lost in the original JPEG.
Yes in PNG and WebP output. JPG cannot store transparency and uses a white background.
No. The converted image keeps the decoded source width and height.
No. Animated PNG and WebP inputs are rejected.
No. Selected image contents are processed locally in this browser.
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Image Converter processes each selected image in order while keeping its decoded pixel dimensions. Sources are decoded one at a time to limit memory use.
Static image format conversion changes how decoded pixels are stored; it does not invent missing detail or automatically resize the picture. PDFKaka validates the file extension, reported MIME type, binary signature, dimensions, and actual encoded result while the image stays in this browser. Animated PNG and WebP inputs are rejected instead of silently losing frames.
JPG normally suits photographs and can be made smaller with the quality control. Because JPG has no alpha channel, transparent source pixels are deliberately filled with white before encoding.
PNG stores the converted pixels losslessly and preserves transparency when the source contains it. Converting a previously compressed JPG or WebP to PNG cannot recover detail already discarded by that earlier encoding.
Some Canvas implementations fall back to PNG when WebP encoding is unavailable. The converter inspects the returned MIME type and file signature, then reports an honest unsupported-browser error instead of mislabelling the download.
The output uses the decoded source width and height. Use Image Resizer instead when a different width, height, or maximum KB value is required.
Select static images within the file-count, per-file and combined-input limits shown above. Add or remove files before converting. Each image is processed in input order; duplicate names receive unique suffixes. Download individual results or one ZIP after all outputs pass validation.
JPG is widely supported and usually compact for photographs. WebP can also be efficient when the destination accepts it and the browser can encode it.
Choose PNG when transparent pixels must be preserved reliably. WebP can also contain transparency, but destination and browser support should be checked.
No. This tool keeps the decoded dimensions. It changes the encoding format and, for JPG or WebP, lets you choose lossy quality.
No. Validation, decoding, Canvas rendering, encoding, output checking, previews, and download run in the current browser session.
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