A working copy that stops degrading
Each time a JPG is edited and saved, it is compressed again and sheds a little detail. The PNG you download stores exact pixels, so you can save it as often as the edit needs with no further loss.
Free JPG to PNG converter
The PNG holds every pixel of your JPG exactly, so later edits and saves stop wearing the image down.
Converting JPG to PNG rewraps your image in a lossless container. Nothing already lost to JPEG compression comes back, the artefacts baked into the JPG are copied across exactly, but no further detail is discarded, so the PNG is safe to edit and re-save repeatedly without degrading.
Transfers use HTTPS, and files converted on the free tier are deleted within 24 hours, so the result is not a long-term archive. Quality depends on the source file, so open the PNG file once before you share it.
FromJPGLossy
JPEG (Joint Photographic Experts Group)
A lossy raster format tuned for photographs. It discards fine detail to reach small file sizes, and it has no alpha channel, so a JPG can never carry a transparent background.
ToPNGLosslessTransparency
PNG (Portable Network Graphics)
A lossless raster format with a full alpha channel. It preserves every pixel it is given and supports transparency, which makes it the usual choice for logos, screenshots, and any image with sharp edges or text.
A 3024 × 4032 photo saved as JPG, then converted on indox.org
- JPGthe original
- 3.9 MB
- PNGfrom indox, 483% larger
- 22.5 MB
Why use indox to convert JPG to PNG?
A format ready for background removal
JPG has no alpha channel. The PNG arrives fully opaque, but it can hold transparency, so you can open it in an editor and cut the background out afterwards. Nothing is erased during the conversion itself.
No image editor needed for the export
You do not have to open an editor to turn a JPG into a PNG. Add the file here, confirm PNG and download the result; there is no software to install, and a one-off file does not need an account.
What happens to your picture
Stays
- Every pixel the JPG already holds, copied exactly
- The picture's width and height, because nothing is resized
- Your original JPG, which is not touched
Changes
- The container: pixels are written losslessly as PNG, so later saves do not lose more detail
- File size: PNG stores the pixels without discarding detail, so the file is usually larger
- An alpha channel becomes possible in the PNG, but the converted picture is still fully opaque
- Detail the JPEG compression already removed, including its blocky artefacts, stays as it is and does not come back
How do I convert JPG to PNG online?
- 1
Add the JPG you plan to edit
Add the JPG by dropping it on the box or choosing it from your device, or import it from a URL, Google Drive or Dropbox. Use your least compressed copy, because its artefacts are carried over exactly.
- 2
Pick PNG and run the conversion
See that PNG is selected as the output format, then begin the conversion. A progress bar tracks the job, which can be cancelled.
- 3
Download the PNG and edit that copy
Download the PNG; it is usually a bigger file than the JPG. It looks identical and has no transparent areas yet; do your editing on this copy from now on.
What do I get from indox's JPG to PNG converter?
You receive a PNG with the same pixels as your JPG, stored without loss. It is the file to keep editing, to cut a background out of later, or to send where only PNG is accepted. It is not a repair: blocking and ringing already in the JPG stay, the image arrives opaque, and the file is usually larger. On the free tier, both the JPG and the PNG are deleted within 24 hours.
- A lossless copy of the JPG's pixels
- A format that accepts transparency once you edit it
- No software to install, no account for one file
- A job you can cancel while the progress bar runs
- Download the PNG or send it as a link
What are the limits for JPG to PNG?
Size
The upload box shows the live size limit before you add a file. Signing in raises it, and paid plans raise it further.
Formats
JPG in, PNG out. Pick another output on the converter if you need a different format.
Privacy
Files are encrypted in transit over HTTPS and processed on indox infrastructure.
Deletion
Free-tier files are deleted automatically within 24 hours after the job finishes.
Limits worth knowing
- This is not a quality repair. Detail destroyed by the original JPEG compression cannot be recovered by changing container.
- The result is opaque. Transparency becomes possible after conversion but is not applied for you.
- For photographs intended only for display, the larger PNG brings no visible benefit over the JPG.
When the result is not what you expected
| What you see | Why | What to do |
|---|---|---|
| The PNG is much bigger than the JPG | PNG compresses without losing detail, while JPEG discards detail to save space | Keep the JPG when the picture is only for viewing, and use the PNG for editing |
| The PNG still shows JPEG blockiness | The artefacts are part of the pixels, and PNG stores the pixels exactly | Start again from the original photo or an uncompressed source |
| The background is not transparent | A JPG has no alpha channel, so the PNG starts out fully opaque | Remove the background in an image editor after converting |
| A form wants a PDF instead | The PNG is not the format the form lists | Turn the picture into a PDF with JPG to PDF |
What do the free and paid plans add?
Free
- All converters
- Daily credit refresh
- Email support
Basic
- Access to all features
- AI Extract
- Priority conversions
- Email support
Highest priority
Premium
- Everything in Basic
- Highest priority queue
- Larger file limits
- Priority support
Pay-As-You-Go
- No subscription
- Credits never expire
- Opt-in auto-refill
- Access to all features
Which conversions are close to JPG to PNG?
JPG vs PNG: what is the difference?
| Compared on | JPG | PNG |
|---|---|---|
| Compression | Lossy, based on the discrete cosine transform | Lossless |
| Transparency | No alpha channel | Optional alpha channel |
| Colour depth | True colour at 8 bits per component | Greyscale, indexed and true colour, with 8 or 16 bits per component for true colour |
| Suits | Photographs; sharp content such as diagrams and charts can look poor under lossy compression | Lossless storage of static and animated raster images |
| Largest picture | 65,535 × 65,535 pixels | 2,147,483,647 × 2,147,483,647 pixels |
Who can use a JPG to PNG converter?
When to use it
- Preparing a photo for editing where it will be saved several times and further JPEG loss is unacceptable.
- Getting an image into a format that accepts transparency before cutting out a background.
- Meeting an upload requirement that accepts PNG only, such as some print services and app-store assets.
- Archiving a screenshot or a graphic containing text, where PNG keeps edges crisp instead of smearing them.
Where can I read more about converting files?
Sources
- Portable Network Graphics (PNG) Specification (Third Edition)W3C
- Image file type and format guideMDN Web Docs
- JPEG Image Encoding FamilyLibrary of Congress
Facts checked on October 16, 2026
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JPG to PNG FAQs
Is JPG to PNG lossless?
The conversion step itself is lossless, every pixel in the JPG is copied into the PNG unchanged. What is not lossless is the history: the original JPEG compression already discarded detail permanently, and converting cannot bring it back. So you get a lossless copy of an already-lossy image.
Will converting JPG to PNG give me a transparent background?
No. JPG has no alpha channel, so every pixel arrives opaque and the PNG is a solid rectangle. Converting gives you a format that supports transparency, which lets you remove the background afterwards in an editor. Nothing is cut out during conversion.
Why is my PNG larger than the JPG?
PNG stores exact pixel values with lossless compression, while JPEG approximates them and throws away what the eye is least likely to miss. For a photograph the PNG is commonly two to five times bigger. For flat graphics, logos, or screenshots the gap narrows and PNG can even come out smaller.
Is PNG better quality than JPG?
PNG preserves what it is given, so it is the better choice when an image will be edited repeatedly or needs transparency or crisp text. It does not improve an existing JPG. For a photo displayed once, a good-quality JPG looks the same at a fraction of the size.
Can I just rename a .jpg file to .png?
No. The extension does not change the bytes inside, so the file is still JPEG data wearing the wrong name. Some software will detect this and open it anyway, but strict tools will reject it as corrupt. A real conversion re-encodes the image data.
Is it safe to upload my pictures?
The picture travels over HTTPS and files on the free plan are deleted within 24 hours. Your original JPG stays on your device.