You see the saving before you download
Most converters hand you a file and let you work out afterwards whether it was worth it. Here the original size, the WEBP size and the percentage saved are on screen and update as you move the quality slider. If a setting only buys you four percent, you will know before downloading rather than after.
Where the quality slider actually matters
At 85, which is the default, the difference from the original is invisible in normal viewing for most photographs — and the file is typically 25 to 35 percent smaller than a JPG of equivalent appearance. Below 60, flat areas of colour start to band and edges pick up halos.
Two cases deserve care. Screenshots and text suffer at low quality far sooner than photos do, because compression artefacts sit right on the letterforms. And images with transparency keep their alpha channel here, which is the main reason to prefer WEBP over JPG for logos and product cut-outs.
Frequently asked questions
Is transparency kept?
Yes. Unlike JPG, WEBP supports an alpha channel, so a transparent PNG stays transparent.
Which browsers display WEBP?
All current ones — Chrome, Firefox, Safari, Edge — have supported it for years. It is safe for the web today.
What quality should I pick?
Leave it at 85 for photographs. Raise it to 90 or more for screenshots and images containing text.
Can I convert a JPG too?
Yes, JPG and PNG are both accepted as input.