Works for PNG and for the JPG you call JPEG
JPG and JPEG are the same format with a shorter and a longer extension. Add a .png file and you get a .jpg back; there is no separate tool for the JPEG spelling.
PNG to JPG Converter
Add a PNG and get a JPG back. Transparent areas turn black, so this suits pictures without transparency.
To convert png to jpg, add the .png file, keep JPG as the output and download the result. In our test, a transparent PNG gave a jpg whose transparent area was black, whatever colour the PNG stored under it, so use this for opaque images such as screenshots and photos.
Transfers use HTTPS, and files converted on the free tier are deleted after 24 hours, so the result is not a long-term archive. Quality depends on the source file, so open the JPG file once before you share it.
FromPNGLosslessTransparency
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.
ToJPGLossy
JPEG (Joint Photographic Experts Group)
A lossy photo format from the early 1990s built on block-based DCT compression. It is limited to 8-bit standard dynamic range with no alpha channel, yet it opens in practically every editor, viewer, email client and content management system.
A 1200 × 800 px transparent PNG test image, converted on indox.org
- PNGstored white under transparency
- 37.2 KB
- PNGstored black under transparency
- 36.3 KB
- JPGfrom indox, identical for both PNGs, background black
- 34.5 KB
Why use indox to convert PNG to JPG?
Nothing to install, any device with a browser
The conversion runs on indox servers, so it works on Windows, Mac, Android and iPhone alike. In our test we converted without creating an account.
The transparency result is on this page, measured
Many converter pages only say transparency 'is flattened'. We converted two transparent test files and report the exact colour, the edge behaviour and what happened to dark text, so you can decide before you convert.
What happens to your PNG
Stays
- Your original PNG, which is not touched
- The pixel size, 1200 × 800 in our test
- The picture as seen at normal viewing size
- The embedded sRGB colour profile in our test
Changes
- Transparency: every transparent pixel became black in our test
- Soft edges: partly transparent rims are blended with black
- Compression: lossy JPG at about quality 85, mean error 1.36 out of 255
- Colour sampling: 4:2:0, so hard coloured edges bleed slightly
- File size: 36.3 KB became 34.5 KB in our test
- Metadata: a small server-written EXIF block was added
How do I convert PNG to JPG online?
- 1
Add your PNG file
Drop the file on the box or choose it from your device. Keep the original PNG: it is your lossless copy, and a JPG cannot be turned back into it.
- 2
Confirm JPG, then start the conversion
Check that JPG is the output format, then start the conversion. In our test it took about 3 seconds from the click to Completed.
- 3
Download the JPG and look at the background
Open the result before you send or upload it. If your PNG had a transparent background, check that black is acceptable; if it is not, fix the PNG first (see the limits).
What do I get from indox's PNG to JPG converter?
You hand over a PNG and take away a JPG that uploads, emails and opens everywhere. The page explains what the converter does to transparency before you try it, so a logo does not come back on a black rectangle.
- One JPG for the PNG you add, in a few clicks
- Nothing installed on Windows, Mac or a phone
- Transparency behaviour measured and shown with a before and after
- Your original PNG is left as it was
What are the limits for PNG to JPG?
Size
The upload box shows the live size limit before you add a file. Signing in raises it; a paid plan does not change it.
Formats
PNG in, JPG 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 kept for 24 hours after the job finishes, then deleted automatically.
Limits worth knowing
- Transparent areas become black. If your PNG is a logo, a cut-out product photo or an icon, the JPG will sit on a black rectangle. In our test the black fill was the same whether the PNG stored white or black under the transparent pixels.
- Dark artwork on transparency can disappear. Our dark text (20, 20, 20) on a transparent background became almost invisible on the black fill. Put such an image on a light solid background in an editor first, then convert.
- We saw no setting for the background colour or the JPG quality. The output matched standard quality 85 tables, so you cannot trade size for detail yourself.
- JPG is lossy and 8-bit. Keep the PNG if you may edit, scale or print the picture later, and do not convert a JPG back to PNG expecting the detail to return.
- The output is not progressive. It is a baseline JPG with 4:2:0 colour sampling, which suits most uses but softens thin coloured lines and small coloured text.
When the result is not what you expected
| What you see | Why | What to do |
|---|---|---|
| A black background where the PNG was transparent | A JPG has no transparency, and the converter fills it with black | Put the image on a solid light background in an editor, export a PNG, then convert; or keep PNG if you need transparency |
| Dark text or a dark logo has vanished | It sat on transparency and is now dark on black | Add a light background layer before converting |
| Edges look rough or tinted | JPG compression and 4:2:0 colour sampling soften hard edges | Keep the PNG for text and line art; use the JPG for sharing only |
| The JPG is barely smaller than the PNG | Flat graphics already compress well as PNG | Compare both sizes; for a graphic you may not gain anything |
| You need a PDF or a vector file instead | JPG is a raster photo format | Try PNG to PDF or PNG to SVG |
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
- Priority support
Pay-As-You-Go
- No subscription
- Credits never expire
- Opt-in auto-refill
- Access to all features
Which conversions are close to PNG to JPG?
PNG vs JPG: what is the difference?
| Compared on | PNG | JPG |
|---|---|---|
| Compression | Lossless, so every pixel is kept | Lossy, so detail is approximated and files are often smaller |
| Transparency | Optional alpha channel | None, so transparent areas must be filled |
| Best for | Logos, screenshots, line art, text | Photos and pictures that must upload or send easily |
| Colour | Up to 16 bits per channel, optional ICC profile | 8 bits per channel |
| Where it opens | Browsers, editors and most apps | Practically every editor, browser, phone and email client |
Who can use a PNG to JPG converter?
When to use it
- Uploading a PNG screenshot to a site, form or portal that accepts JPG only.
- Attaching a picture to an email for someone whose app does not open PNG well.
- Sending a preview of an exported graphic that already has a solid background.
- Checking what a transparent PNG will look like as a JPG before it goes to a platform that converts it for you.
Where can I read more about converting files?
Sources
- Portable Network Graphics (PNG) Specification, Third EditionW3C
- PNG, Portable Network GraphicsLibrary of Congress
- JPEG baseline, ISO/IEC 10918-1 and ITU-T T.81Library of Congress
Facts checked on November 4, 2026
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PNG to JPG FAQs
How do I convert PNG to JPG?
Open the converter, add your PNG file, keep JPG as the output and download the result. In our test this worked anonymously, with no account, in about 3 seconds for a 1200 × 800 px image.
What happens to a transparent background when I convert PNG to JPG?
It turns black. A JPG cannot store transparency, and in our test all four corners of the output were black (0, 0, 0). Partly transparent edge pixels were blended with black as well.
Can I get a white background instead of black?
We saw no background option in our run, and a PNG that stored white under its transparent pixels still came out black. Place the image on a white layer in an editor, export that as PNG, then convert it.
Will I lose quality?
Some. JPG is lossy. On the opaque part of our test image the mean error was 1.36 out of 255 (PSNR 34.07 dB), with larger changes on hard edges and text. Keep the PNG as your master.
Why do my screenshot and text look blotchy?
The JPG stores colour at half resolution (4:2:0), so hard coloured edges bleed. In our test a red and white edge picked up a pinkish halo. For text-heavy images PNG usually stays cleaner.
Is a PNG to JPEG converter different from PNG to JPG?
No. JPG and JPEG are the same format, and the converter gives you a .jpg file either way.
Does the JPG come out much smaller?
Not always. Our 36.3 KB transparent test graphic became 34.5 KB, about 5% smaller. That is one synthetic image with large flat areas; your file will differ, so compare the two sizes.
Does the JPG keep the colour profile and metadata?
In our test the embedded sRGB profile was kept, and the server added a small EXIF block with orientation and resolution. We did not test a photo with camera or location data, so we cannot say what happens to that.
Can I convert the JPG back to PNG and get my transparency back?
No. The transparent pixels were replaced by black, and JPG compression has discarded detail. Keep the original PNG.