JPEG vs PNG vs WebP for your images

Match the format to the image

JPEG is useful for photographs when a smaller file matters and transparency is unnecessary. Its lossy compression can leave halos or blocks around sharp text. PNG uses lossless compression and supports transparency, making it a useful option for screenshots, logos and graphics with crisp edges. It can be much larger for photographs.

WebP supports transparency and can give a compact image for modern web use. BZ WorkOps uses your browser’s encoder for its exports. The best choice depends on the image and where you will upload it: check the destination’s accepted formats rather than choosing only by file extension.

Example: a transparent shop logo

A transparent PNG logo can sit on several background colors. Exporting it as JPEG removes that transparency; the converter fills those pixels with the background color you select. If you select white and later place the logo on a dark page, a white rectangle will remain behind it.

Try PNG and WebP exports if your destination supports both. Place each on the actual background, zoom in around letters and compare the displayed file sizes. A smaller export is helpful only if the logo still looks right.

Convert and compare

1. Open Convert Images and add a JPEG, PNG or WebP file. Work from your original image where possible.
2. Choose the output format. For JPEG, set a background for transparent pixels; for JPEG or WebP, adjust quality.
3. Process the image and compare the output size with the original. A conversion can produce a larger file.
4. Download the result and inspect fine text, gradients, edges and transparency.
5. Test the actual upload destination. Keep the original if the platform rejects the new format or recompresses it poorly.

Know what conversion cannot preserve

Changing JPEG to PNG does not undo JPEG artifacts. A higher quality setting cannot recover details already lost in the source. PNG output does not use the quality slider because its encoding is lossless.

The image tools re-encode pixels and remove most metadata. They preserve only the first frame of animated WebP, so use a different workflow if you need animation. The converter is for supported raster images; it does not turn a photo into editable SVG vector artwork.