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Convert image

Switch between PNG, JPEG, and WebP locally, with a preview before you save.

Processed in your browser

Choose a format for the job the image needs to do.

File formats are not just different extensions. They balance transparency, compatibility, detail, and file size in different ways. Preview the conversion so the result—not a rule of thumb—guides your choice.

PNG for exact edges
A strong fit for transparency, interface captures, line art, and graphics that need lossless pixels.
JPEG for broad compatibility
Useful for photographs when transparency is not required.
WebP for modern delivery
A flexible web format that can keep transparency while often producing practical file sizes.

How to use Convert image

  1. 1

    Load the source

    Choose the best original you have rather than a repeatedly saved copy.

  2. 2

    Pick the destination format

    Match the format to transparency, visual content, and where the file will be used.

  3. 3

    Preview and save

    Check transparent and detailed areas, then download the converted file.

Questions people ask

Which formats can I create?+

Lumina can export PNG, JPEG, and WebP from images your browser can decode.

Will conversion preserve transparency?+

PNG and WebP can preserve transparency. JPEG cannot, so inspect the preview before saving a transparent source as JPEG.

Does converting make an image sharper?+

No. Conversion changes the file encoding, not the source detail. Use Enhance for controlled scaling and sharpening.