Different ways to store pixels
JPEG is lossy and does not store transparency. PNG is lossless and supports transparency, often useful for crisp graphics and screenshots. WebP can be lossy or lossless and can retain transparency. Conversion changes the encoding; renaming .png to .jpg does not convert the bytes.
Where each tends to fit
A photo sent to a site or email often works well as JPEG; WebP is useful when the destination accepts it. A screenshot with small text, flat colors, or transparent artwork is a good PNG starting point. Use the table below as a test plan, not a fixed platform requirement.
What Pixlena exports
Convert outputs JPG, PNG, or WebP via your browser's canvas encoder. When exporting a transparent PNG or WebP as JPEG, Pixlena paints a white background first. JPEG-to-PNG does not recover the detail discarded by the source JPEG; PNG may simply be larger.
Check the destination
Websites, email clients, and social platforms can recompress images or reject formats and dimensions. Confirm accepted formats and preview the final result. If sharp small text or alpha edges matter, inspect those areas after conversion rather than assuming a smaller file is better.