ImgTurbo

JPEG → PNG · one image

JPG to PNG converter in your browser

Create a lossless PNG copy without uploading the JPEG. Conversion cannot restore lost JPEG detail or automatically make its background transparent.

Convert JPG to PNG

Choose one JPEG. PNG output is selected automatically; resize and orientation controls are optional.

Local processing: the image is decoded and encoded on this device, not posted to ImgTurbo.

Choose a JPEG, PNG, or WebP image to begin.

Direct answer

What JPG-to-PNG conversion changes

The browser decodes the JPEG into pixels and writes those rendered pixels into a PNG file. PNG is lossless from that point forward, but the conversion cannot recreate detail previously removed by JPEG compression.

Transparency-ready, not transparent

PNG can store an alpha channel. A normal JPEG has no alpha data, so its existing background remains opaque. Background removal is a different operation.

Often a larger file

PNG's lossless compression is well suited to screenshots and flat graphics. Photographic pixels commonly need more bytes than the original lossy JPEG.

Useful as an editing copy

A PNG output avoids another JPEG encode in this conversion. It is useful when a workflow requires PNG or when future pixel edits need lossless saves.

How to convert JPG to PNG

  1. Choose one JPEG up to 30 MB, 40 megapixels and 16,384 pixels per side.
  2. Leave PNG selected. Optionally change dimensions, orientation or grayscale.
  3. Convert, inspect the measured output size and dimensions, then download the .png file.

JPG to PNG questions

Does converting JPG to PNG improve image quality?

No. PNG prevents new lossy compression in that output, but it cannot restore detail the JPEG source already discarded.

Will the PNG have a transparent background?

No. PNG can store transparency, but a normal JPEG source has no alpha channel. ImgTurbo does not identify or remove backgrounds.

Why can a PNG be larger than the JPG?

PNG uses lossless compression, while JPEG is lossy and tuned for photographs. Re-encoding photo pixels as PNG commonly creates a larger file.

Is the JPEG uploaded?

No. Image bytes are decoded and re-encoded in this browser. Optional audience analytics can load after consent, but it does not receive the image.

Sources

Technical statements last reviewed 10 September 2026.