PNG to JP2 Converter
Processing entirely on your device — large files may take a moment.
PNG is a lossless image format that preserves every pixel exactly and supports transparent backgrounds, which makes it the standard for screenshots, logos and graphics containing text or sharp edges. Convert photos or scans to JP2 for archival storage, or JP2 to JPG/PNG for everyday viewing.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How PNG compares to JP2
| PNG | JP2 | |
|---|---|---|
| Compression | Lossless (DEFLATE) | Wavelet (lossy + lossless) |
| Transparency | Full alpha (8/16-bit) | Supported |
| Animation | Only via APNG extension | Not supported (MJ2 is separate) |
| Metadata | tEXt chunks, ICC profile | XML boxes (EXIF/GPS) |
| Best for | Screenshots, logos, sharp graphics | Archives, medical, cinema |
How to convert PNG to JP2
- 1
Select your files
Drag & drop your PNG files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to JP2". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted JP2 file individually, or grab everything at once as a ZIP archive.
About the PNG format
PNG was created in 1996 as a free, open replacement for the patent-encumbered GIF, and it has been the reference lossless image format ever since. Pixels are compressed with the DEFLATE algorithm (the same one inside ZIP files), which reproduces the original image exactly — bit-for-bit — while supporting full 8-bit or 16-bit alpha transparency. Screenshots, logos, icons, charts and anything with text or sharp edges should live in PNG.
Because it never discards information, PNG files of photographs are several times larger than JPG — that is the price of perfection. Modern PNG encoders add filters per scanline that make screenshots and flat-color graphics compress surprisingly well. PNG also became the base of APNG, the animation extension that browsers play natively.
+Strengths
- ✓Truly lossless — every pixel survives exactly as it was
- ✓Full alpha transparency with smooth edges, not 1-bit masks
- ✓Open standard, unpatented, with excellent tooling everywhere
- ✓Ideal for text, line art and flat-color graphics — sharp edges stay sharp
!Limitations
- −Photographs become several times larger than JPG
- −Base format has no animation (that is the APNG extension)
- −16-bit or high-resolution PNGs can grow very heavy
About the JP2 format
JPEG 2000 (JP2) replaced JPG's DCT blocks with wavelet transforms: at the same bitrate it shows fewer blocky artifacts, and its lossless mode compresses better than JPG ever could. It was the format of early digital cinema and remains common in archives, medical systems and geospatial pipelines.
Browser support never arrived — Chrome, Firefox and Safari all skip it — so a JP2 file is often invisible on the web. Converting JP2 to JPG or PNG makes archival material viewable anywhere; converting the other way gives long-term storage better compression.
+Strengths
- ✓True lossless mode
- ✓Better quality per byte than JPG
- ✓ROI / progressive decoding built in
!Limitations
- −No browser support
- −Slow to encode compared to JPG
Why convert PNG to JP2?
Converting makes sense where the strengths of JP2 meet what PNG cannot give you. True lossless mode Meanwhile Photographs become several times larger than JPG One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this PNG to JP2 converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting PNG to JP2?
No — JP2 is a lossless format, so every pixel of the converted image matches your original PNG file. You can also adjust the quality/size balance before converting when the target format supports compression.
Can I convert several PNG files at once?
Yes — drop as many files as you like into the tool and they are converted in one batch. When more than one file comes out, everything is bundled into a ZIP for a single download.
Will transparent areas survive the conversion to JP2?
Transparency is kept whenever JP2 actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.