UtilNest

Image Converter (JPG / PNG / WebP)

Upload any image and convert it to JPG, PNG or WebP. Tune the quality slider for JPG and WebP to balance file size against visual fidelity; PNG stays lossless. Everything is decoded and re-encoded locally — nothing is uploaded.

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Your files never leave your device. All processing happens on your device. No uploads, ever.

How to use Image Converter (JPG / PNG / WebP)

  1. 1

    Upload an image

    Choose a picture from your device.

  2. 2

    Pick the output format

    Select JPG, PNG or WebP.

  3. 3

    Adjust quality

    For JPG/WebP, move the quality slider as needed.

  4. 4

    Download

    Save the converted image locally.

Three formats, one tool

JPG for small file sizes, PNG for lossless detail and transparency, WebP for modern web performance. Pick the output and hit convert.

Quality control

For JPG and WebP a quality slider controls the trade-off between file size and sharpness. PNG output is always lossless.

Private by design

Decoding and encoding happen entirely in your browser. Your image never leaves your device.

Frequently asked questions

Which conversions are supported?

Any of JPG, PNG or WebP as output. Any browser-decoded image can be uploaded as input.

Does the quality slider affect PNG?

No. PNG output is always lossless; the slider only applies to the lossy JPG and WebP formats.

Is my image uploaded anywhere?

No. Conversion runs entirely in your browser.

Category: Images

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Last updated 7 August 2026