JP2 to PNG online converter



Supported image types: JP2, J2K, JPF, JPX (JPEG 2000)
Max file size: 200MB. All uploaded files are automatically deleted 1 hour after upload.

Online JP2 (JPEG 2000) to PNG Converter

Convert JP2 (JPEG 2000, ISO/IEC 15444-1) files to universally supported, lossless PNG images. JPEG 2000 uses discrete wavelet transform (DWT) compression instead of traditional 8×8 DCT blocks and is widely used in digital library archives (such as the Internet Archive and Library of Congress), satellite imagery, medical imaging (DICOM), and PDF embedded streams. However, outside of Safari on macOS/iOS, modern web browsers (Chrome, Firefox, Edge) do not render `.jp2` or `.j2k` files natively.

Why convert JP2 to PNG instead of JPG?

  • Zero generation loss: Many archival and scientific JP2 files are encoded with reversible 5/3 wavelet filters (lossless mode). Converting to PNG preserves every decoded pixel without introducing JPEG chroma subsampling or block artifacts.
  • Transparency support: Unlike standard JPEG, both JP2 and PNG support alpha channels. Converting JP2 to PNG keeps transparent regions intact.
  • High bit-depth fidelity: Preserves clean gradients and sharp text scans from digitized books, maps, and microfilm.

How to convert JP2 to PNG

  1. Select your .jp2, .j2k, or .jpf file or paste a direct image URL and click Upload!.
  2. Click Convert to PNG! to decode the JPEG 2000 wavelet stream into a lossless PNG.
  3. Download your PNG image, or pass it to our PNG optimizer, resizer, or crop tool.

Need a smaller photographic file instead? Use our JP2 to JPG converter.