Image Tools
Universal Image Converter
Convert a mixed batch into nine supported image formats locally.
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Image Tools
JPG ↔ PNG Converter
Convert JPG to PNG or PNG to JPG in one place. Each image becomes the opposite format, with local previews, editable settings and downloads.
JPG ↔ PNG ConverterOn-device processing
Preparing your tool…
How to use it
- 01Choose up to 8 supported images. File contents are checked instead of trusting the extension.
- 02Each JPG becomes PNG and each PNG becomes JPG. Optional settings control quality and transparent-area fill.
- 03Convert, review dimensions and actual file size, then download successful results.
Choose this conversion for the right reason
The opposite format is selected for each file: JPG becomes PNG and PNG becomes JPG. PNG cannot restore detail lost in the source JPEG. JPG cannot store alpha, so transparent areas receive the optional fill color, initially white.
Files are processed one at a time in a worker to limit peak memory. Invalid or unsupported images are reported individually. Conversion changes format; it does not guarantee compression, remove a background or recreate missing source detail.
Practical check: A PNG logo converted to JPG becomes opaque. Keep a PNG copy when the next application needs transparency.
Useful details and limits
Each JPG becomes PNG; each PNG becomes JPG. JPG fills transparent pixels with your selected color. Changing to PNG cannot recover lost detail or remove a background. Limits: 20 MB per file, 40 MB input per batch and 120 MB combined results. General decoding is capped at 20 million pixels and 16,000 pixels per side. Metadata and color profiles are not preserved. Originals are not changed. A failed file receives its own error and does not stop the other conversions.
Questions about this tool
How is the output format chosen?
JPG/JPEG input becomes PNG; PNG input becomes JPG. For another format or a mixed collection, use Universal Image Converter.
What should I check before using the converted file?
A PNG logo converted to JPG becomes opaque. Keep a PNG copy when the next application needs transparency.
Are my images uploaded or stored?
No. Files, previews, conversion and ZIP creation remain on your device. A codec may load from Tool Fera when needed, but your image bytes are not sent with that request.
Understand the workflow
- Why a transparent image still looks white
Tell a viewer’s white canvas from a flattened image. Check PNG transparency, review cutout edges and choose the right format for a reusable background-free image.
- Image dimensions versus file size: pixels are not megabytes
Understand pixels, bytes, aspect ratio and compression. Choose resizing or quality changes for a real upload requirement and compare the final image.