PDF PremFree Image Format Converter
Switch image formats in one click. PDF Prem's free converter turns JPG into PNG, PNG into WebP and more — with a quality slider and before/after file sizes, all in your browser.
Quality applies to JPEG and WebP only. PNG is always lossless, so the slider is ignored for PNG.
Original
Converted
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How to use the Image Format Converter
- Choose an image from your device.
- Pick the target format — JPEG, PNG or WebP.
- Adjust the quality slider (affects JPEG and WebP only).
- Click "Convert Image" and compare the before and after sizes.
- Click "Download" to save the converted image.
Frequently asked questions
Is this image converter free?
Yes — completely free with no sign-up, watermark or limits.
Why does the quality slider not affect PNG?
PNG is a lossless format, so its quality is always maximum. The slider only applies to JPEG and WebP, which use lossy compression.
Do all browsers support WebP?
Yes. WebP is supported by all modern browsers, including Chrome, Firefox, Safari and Edge, and works on Android and iOS.
Are my images uploaded anywhere?
No. Conversion happens entirely in your browser on your device — your images are never uploaded to any server.