Going from JPG to PNG converts to a lossless format with transparency support. The file gets larger, but the image stops degrading — useful before further editing or when transparency is needed.
Convert JPG to PNG – Free Online JPG to PNG Converter
Why convert JPG to PNG?
- Add a transparent background in image editors (PNG supports alpha; JPG doesn't).
- Stop further generational quality loss before applying multiple edits.
- Required input for some logo/badge platforms and design tools.
Tip: Converting JPG to PNG doesn't restore quality lost in the original JPG compression — it only prevents further loss.
What is the difference between JPG and PNG?
| JPG | PNG | |
|---|---|---|
| Compression | Lossy — quality traded for size | Lossless — pixels stored exactly |
| Transparency | Not supported | Full alpha channel available for editing |
| Repeated saving | Degrades a little on every save | Stable through unlimited edit cycles |
| Typical size (photo) | Compact | Several times larger |
| Best for | Finished photos for sharing | Working copies, graphics, upcoming edits |
Does converting JPG to PNG lose quality?
Expect a pixel-exact copy of what the JPG displays — including its flaws. JPG compression works on 8-by-8 pixel blocks, and in heavily compressed sources those blocks show as faint squares in smooth areas like skies and skin, with ringing halos around high-contrast edges. The PNG freezes all of that faithfully. If the artifacts bother you, no format change will remove them; only re-exporting from the original camera file or design source can.
The practical win is what happens after the conversion. Once the image is PNG, you can crop, retouch, annotate, and save through as many rounds as a project needs without the file drifting further from the original — every save decodes and re-encodes identically. Photographers and designers use exactly this move before heavy retouching sessions: one unavoidable generation of JPG loss already happened, and the PNG guarantees it stays at one.
Size growth depends on content. Detailed photographs inflate the most, because photographic grain and JPG's own compression noise are nearly incompressible to a lossless encoder. Flat graphics that were mis-saved as JPG somewhere along the way grow less, and occasionally even shrink once their artificial noise is the only complex thing in the frame. Either way the ceiling is generous — anything up to 50 MB converts here without signup.
What can go wrong converting JPG to PNG?
- The PNG still shows blocky squares and halos — Those artifacts were created when the image was first saved as JPG and are now part of the pixels. Re-export from the original source file if one exists; the conversion cannot reconstruct detail that was discarded.
- I converted to PNG but the background is not transparent — Conversion changes the container, not the content — the JPG was fully opaque, so the PNG is too. Open the PNG in an editor with background-removal tools to erase the background; the format now supports saving that result.
- An upload form now rejects the file for being too big — The lossless PNG can be several times the JPG's size and may cross the form's limit. If the site accepts it, upload the original JPG instead, or downscale the image in an editor before converting.
How to convert JPG to PNG
- Upload your JPG file using the area above.
- PNG is preselected as the target format.
- Click Start and wait for the conversion to finish.
- Download your converted PNG file.