JPG to PNG Converter
Some tools only accept PNG. Convert in seconds, locally.
Drop your JPG or JPEG files here
or choose files — up to 100 at once, 100 MB each
No upload. Files are processed in your browser.
Files never leave your device · EXIF and GPS removed
Works on Chrome, Safari, Firefox and Edge · No installation
JPG to PNG changes the container without recovering detail that was already lost. It is useful when a form or editor only accepts PNG, and it avoids further quality loss on repeated saves.
Converting JPG to PNG does not restore lost detail — the compression already happened. What it does is change the container so a picky upload form or editor will accept the file, and prevent further quality loss if you plan to re-save it repeatedly.
Expect the PNG to be several times larger than the JPG. If size matters, keep the JPG.
Last reviewed November 2026
When you actually need this
A form demands PNG
Plenty of internal tools and print services only list PNG.
You will edit and re-save
PNG avoids stacking new JPG artifacts on every save.
You need a flat, lossless file
Useful for screenshots destined for further processing.
How to convert JPG → PNG
- Drop JPG files. Up to 100 at once, processed on your device.
- Convert. PNG output is always lossless.
- Download. Files will be noticeably larger than the originals.
What you get back, and what it costs
| Source JPG | PNG output | Size change | Why |
|---|---|---|---|
| 12 MP photo, 3 MB | 18–28 MB | 6–9× larger | Photographic detail does not compress losslessly |
| Phone screenshot, 400 KB | 600 KB – 1 MB | 1.5–2.5× larger | Flat areas, so deflate does well |
| Logo, flat colours, 80 KB | 120–200 KB | About 2× | Very little entropy to encode |
| Scanned document, 1.2 MB | 3–5 MB | 3–4× larger | Paper texture and JPEG artefacts are detail to PNG |
What a container swap can and cannot do
Converting JPG to PNG is a decode and re-encode, not a rename. The browser decodes the JPEG back into pixels — including every 8 × 8 block boundary and every ringing artefact around sharp edges — and writes those pixels into PNG without losing a byte. The artefacts are preserved as faithfully as the detail, which is exactly why the output is larger and not better.
What you gain is a file that will not degrade further. Each JPG save re-compresses and stacks a new generation of loss on the old one; PNG does not. If the file is going to be opened and saved repeatedly by someone else, that matters more than the size.
What you lose is size, often by a factor of six to nine on photographs. For a screenshot of a UI, the penalty is much smaller, which is why PNG is the correct default for interface captures and the wrong default for photos.
One detail that surprises people: the canvas converts to sRGB on the way through. If the JPG carried an embedded profile — Adobe RGB, for instance — colours can shift slightly. It is usually invisible, but it is a change, not a pure container swap.
If the PNG did not help
This converter exists to satisfy a file-type filter. If the filter still rejects the file, the problem is almost never the format.
| Symptom | What causes it | What to do |
|---|---|---|
| The PNG is ten times larger and nothing looks better | Expected — lossless containers preserve artefacts as carefully as detail | Use PNG only when the destination demands it |
| I expected a transparent background | JPG has no alpha channel, so there is nothing to preserve | Cut the background out in an editor, then export PNG |
| The form still rejects the file after converting | Many forms cap pixel dimensions or file size, not just the format | Check the stated size — a 4000 px PNG may break a 2 MB limit |
| Colours shifted slightly | Embedded colour profile converted to sRGB by the canvas | Small and usually invisible; keep the original if colour is critical |
| Text looks blurry after converting | The JPG was already soft from compression | Re-export from the original document instead of converting the JPG |
Who actually requires PNG
Short list, because it is a short list — most systems accept JPG happily and only a few insist on PNG.
| Destination | Requirement | Advice |
|---|---|---|
| Design handoff (Figma, Illustrator) | PNG preferred | The natural case for this converter |
| Screenshot and documentation workflows | PNG | Correct choice regardless: text stays sharp |
| Some print and signage portals | PNG or TIFF | Check the pixel dimensions they ask for first |
| Web upload forms | Usually JPG or PNG | If PNG is accepted, watch the file-size cap |
| Email and chat | Either, but PNG is much bigger | Convert back to JPG before sending |
If a page says "PNG only" but rejects your file, look for a size or dimension limit in the small print — that is the usual culprit.
Questions
Does this improve image quality?
No. It only changes the container; detail lost in the original JPG stays lost.
Why is the PNG bigger?
PNG stores pixels losslessly, so it cannot compress photographic data as aggressively as JPG.
Can I convert back?
Yes, use the PNG to JPG tool — but each JPG round-trip loses a little quality.
Does converting JPG to PNG improve quality?
No. The detail lost when the JPG was created is gone. PNG only prevents further loss from here on.
Why is the PNG so much bigger than the JPG?
PNG has to reproduce every pixel exactly, so it cannot throw away the fine variation that JPEG discards. On photographs that difference is typically six to nine times the file size.
Can I get transparency by converting to PNG?
No. Transparency has to exist in the source. A JPG is opaque by definition, so the PNG output is opaque too.
Related converters
Same engine, different formats — all processed locally.