JPG to PNG Converter
Convert JPG to PNG online free — lossless output with transparent background support. Runs entirely in your browser — nothing uploaded.
JPG to PNG re-encodes a photo into a lossless format without changing a single pixel dimension. Drop one image and it converts instantly — no upload, no sign-up, no watermark. Useful before editing, since PNG will not add compression artefacts each time you save.
Convert in two steps
- Drop one JPG into the box, or pick it from cloud storage. Conversion starts on its own — there is no Convert button.
- Check PNG is selected as the output format, then Download. The result panel shows the new size and the percentage change, with a preview above the button.
The quality slider disappears when PNG is selected, which is correct rather than a missing feature: PNG compression is lossless, so there is no quality setting to trade against file size.
The transparency misunderstanding
This is the single most common reason people convert JPG to PNG, and it does not work.PNG supports transparency; a JPG contains none to recover. Converting gives you a PNG that is fully opaque — the background is still there, pixel for pixel, just stored in a format thatcould have held transparency.
Removing a background is a completely separate operation: something has to decide which pixels are the subject. That is what the background remover does, and it saves as PNG because it needs an alpha channel to write into. Convert first only if your editor refuses to open JPGs.
What converting does and does not change
| Property | Result |
|---|---|
| Pixel width and height | Identical — no resampling |
| Existing JPEG artefacts | Preserved exactly; they cannot be undone |
| Further quality loss on re-saving | Eliminated — PNG is lossless |
| Transparency | None; the PNG is opaque |
| File size | Usually several times larger for photos |
| EXIF, GPS and camera metadata | Dropped |
| Colour profile | Converted to the browser's working space, typically sRGB |
The second and third rows together are the honest summary: conversion cannot repair a JPG, only stop it getting worse. If the original has visible blocking around text or halos along high-contrast edges, the PNG will have exactly the same blocking and halos.
When PNG is the right choice, and when it is not
| Situation | Better format | Why |
|---|---|---|
| About to edit and re-save repeatedly | PNG | No generational loss with each save |
| Screenshots, UI, line art, flat colour | PNG | Sharp edges, and often a smaller file than JPG |
| Text or diagrams in the image | PNG | JPEG smears the edges of lettering |
| Software or a portal demands PNG | PNG | No choice in the matter |
| Photograph for a web page | JPG or WebP | PNG can be several times the size for no visible gain |
| Emailing or uploading a photo | JPG | Size limits bite long before quality does |
Note the last two rows, because converting the wrong way costs you. A holiday photo turned into PNG is a much bigger file that looks identical — if size matters, JPG to WebP is the better move, typically 25–35% smaller than the JPG at comparable quality.
How this compares to the alternatives
| ToolJiffy | Typical online converter | Desktop editor | |
|---|---|---|---|
| Image uploaded to a server | No | Yes | No |
| Sign-up | No | Often above a size limit | Licence or account |
| File-size limit | Your device memory | Commonly capped free | None practical |
| Watermark | Never | Sometimes on free tiers | No |
| Batch and ZIP output | No — one at a time | Usually, behind a limit | Yes |
| Works offline | Yes, once loaded | No | Yes |
| Price | Free, unlimited | Free tier then paid | Paid |
Related tools
Going the other way is PNG to JPG, and theimage format converter is the same engine with every format pair in one place. For a whole folder at once, the all-in-one file converter accepts multiple images and returns a ZIP. To actually cut out a background use thebackground remover; to reduce file size, theimage compressor; to change dimensions, theimage resizer. And EXIF remover strips location data deliberately rather than as a side effect.
Frequently Asked Questions
How do I convert JPG to PNG online for free?
Drop one JPG into the box and it converts straight away — there is no button to press. Make sure PNG is the selected output format, then press Download to save it. No sign-up, no watermark, and the image never leaves your browser.Does converting JPG to PNG give me a transparent background?
No, and this is the most common misunderstanding about the conversion. A JPG has no transparency information to recover, so the PNG comes out fully opaque — whatever was behind your subject is still there. To actually cut out a background, use the background remover.Does converting to PNG improve the image quality?
No. JPEG compression is lossy and its artefacts are baked into the pixels, so PNG preserves exactly what is already there rather than recovering detail. What it does prevent is further loss: PNG is lossless, so re-saving it repeatedly will not degrade it the way re-saving a JPG does.Why is the PNG so much larger than the JPG?
Because PNG compresses losslessly. JPEG achieves small photo files by discarding detail your eye is unlikely to miss, which PNG cannot do. Expect a photo to grow several times over. For flat graphics, screenshots and line art the gap is much smaller and PNG can even come out smaller.When is converting JPG to PNG actually worth doing?
Chiefly before editing: converting once and then working in PNG means each save no longer adds compression artefacts. It is also useful when software or a submission portal accepts only PNG, and when you are about to remove a background, which needs an alpha-capable format to save into.Can I convert several JPGs at once?
Not here — this tool handles one image at a time so you can see the result and the size change immediately. For a folder of images converted together and delivered as a single ZIP, use the all-in-one file converter, which accepts multiple selections.Will the pixel dimensions change?
No. Width and height come through untouched, so a 4000 by 3000 photo stays 4000 by 3000 — the image is drawn at its exact source size and re-encoded. Use the image resizer if you want to change dimensions, or the compressor to hit a file-size target.Does the conversion strip EXIF data?
Yes, as a side effect. Canvas re-encoding does not carry metadata across, so GPS coordinates, camera model and timestamps are dropped from the PNG. That is often welcome before publishing a photo; if it is the actual goal, the EXIF remover does it deliberately and reports what it found.