Convert PNG to JPG Portable Network Graphics ↔ Joint Photographic Experts Group Free Online Secure
The picture is redrawn once at its original size and saved as JPG. Nothing is resized, and the file never leaves your device.
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Where these formats come from
Each of these formats was written to solve a different problem. JPEG arrived in 1992 from the Joint Photographic Experts Group and was built for photographs: it discards the detail the eye is least likely to miss, which is why a photo shrinks enormously and why text in a JPEG looks smudged. PNG was written in a hurry in 1996, after the company holding the patent behind GIF began charging for it; it is lossless and has real transparency, which is why logos and screenshots belong in it. WebP came from Google in 2010 and does both jobs, typically a quarter smaller than either. BMP is Microsoft's plain format with no compression at all, and HEIC, Apple's default since 2017, borrows video compression to store a still at about half the size of a JPEG.
Where you meet them
Photographs travel as JPEG or, straight off a recent iPhone, as HEIC. Anything with sharp edges — screenshots, logos, diagrams, text, anything needing a transparent background — belongs in PNG, where JPEG would blur the edges. WebP is what a modern website serves to save bandwidth. BMP survives mostly inside Windows software and in places where a program wants pixels with no decoding at all.
Questions people ask
Should I save this as PNG or JPEG?
Look at the edges. A photograph has no hard edges, so JPEG's way of discarding detail is invisible and the file ends up a fraction of the size. A screenshot, a logo, a chart or anything with text has hard edges, and JPEG leaves a visible halo around every one of them — that is where PNG belongs, even though the file is larger. If the image needs a transparent background, PNG is the only choice of the two.
Why will nothing open my HEIC photos?
Because HEIC is newer than most of the software people have. It has been the iPhone default since 2017, but Windows needs an add-on to show it, many Android phones will not, and a great deal of web software still rejects it outright. Converting to JPEG is the usual answer: the photograph is unchanged to the eye, the file is roughly twice the size, and everything made in the last thirty years can open it.
Does the file lose quality?
It depends on what the two formats can hold. Converting between formats that store the same thing — a PNG to a BMP, a WAV to a FLAC — loses nothing. Converting into a format that throws information away to save space, such as JPEG or MP3, loses a little every time, and converting back does not bring it back. Where a choice exists, this page errs towards keeping the original quality rather than making the smallest file.
Is my file uploaded anywhere?
No. The conversion happens inside your browser, on your own machine; the file never leaves it and there is no server here that could receive it. That is why a large file is limited by your own memory rather than by an upload, and why nothing you convert can appear in anybody's logs — including ours. The audio and video tools do fetch their conversion engine from this site the first time you use them, some thirty megabytes once; after that the work still happens entirely on your machine.
Why people convert PNG to JPG
PNG keeps every pixel exactly as it was drawn, which makes it wonderful for screenshots, logos and graphics, and heavy for almost everything else. JPG takes the opposite approach: it discards detail the eye is unlikely to miss, and in exchange gives files that are a fraction of the size. When a PNG is too big to email, too slow for a web page, too large for an upload form or simply taking up too much space, the quickest remedy is often to convert PNG to JPG. The picture looks much the same on screen, and the file shrinks, sometimes to a tenth of its size.
There are other reasons too. Some systems accept only JPG: certain forms, older software, some printing services and many marketplaces. Some programs handle JPG faster. And a photograph that was saved as PNG by mistake, by a screenshot tool or an export setting, is far better stored as JPG, since PNG gives no advantage for photographs and costs a great deal of space.
This page converts PNG to JPG in your browser. Your picture never leaves your device, which matters for photos of people, documents and anything private. Below you will find how the conversion treats your picture, what happens to transparency, what is lost, and when this is the right move.
What the conversion keeps
Every pixel and the exact dimensions
When you convert PNG to JPG here, the picture is redrawn once at its original size and saved as a JPG. Nothing is resized, cropped or stretched. A picture of 3000 by 2000 pixels is still 3000 by 2000 afterwards, and every pixel is carried into the new file, though the new format will then encode them with some loss.
The resolution the file records
A picture file records a resolution, the dots per inch it is meant to print at. That note is carried over, so a scan or graphic meant to print at a certain physical size still does so. This is especially valuable for scanned pages, where the physical size is part of the meaning.
What "redrawn once" means
The converter opens your PNG, reads its pixels and writes them out in JPG form. That single pass is the only step. The size is not changed, so nothing is resampled; the only change is the format's way of storing the pixels, which is where the compression, and the loss, happen.
What happens to transparency
JPG has none: see-through areas turn white
PNG can contain transparent areas, where the background shows through. JPG cannot. It has no concept of transparency at all, so anything see-through in your PNG comes back white. A logo with a transparent background will appear on a white rectangle. If you place such a JPG on a coloured page, the white box will show.
When this matters
It matters if your image is a logo, an icon or a cut-out that needs to sit on different backgrounds. In that case, keep the PNG for that purpose and make the JPG only for places where a white background is fine. If you need a different background colour, add it in an image editor before converting, so the picture is flattened onto the colour you want rather than onto white.
A quick test
Open your PNG against a coloured background in an image viewer. If the picture shows through anywhere, it has transparency, and the JPG will fill that with white. For photographs, which have no transparent areas, nothing changes.
What is lost
JPEG discards detail, and it cannot be undone
Here is the honest trade-off. JPEG gets small by discarding detail, and that loss cannot be undone. For photographs, it is usually invisible at sensible settings. For screenshots, text and sharp-edged graphics, it shows as a faint fuzz around lines and letters. Because the loss is permanent, keep the PNG if you are going to edit the picture again; each round of editing and saving a JPG loses a little more.
Photographs and graphics behave differently
A photograph, with its smooth gradients and natural texture, hides JPEG's loss well, so convert PNG to JPG freely for those. A screenshot full of small text or a diagram with thin lines shows the loss more, so for those it is better to stay with PNG or to reduce the size with the PNG compressor instead.
Why graphics suffer more
JPEG works on small blocks of the picture and approximates each one. In a photograph, neighbouring blocks are similar and the approximation blends in. At a sharp edge between flat colours, the approximation leaves ripples. That is why a JPG of a screenshot looks slightly smudged around text, while a JPG of a landscape looks fine.
What PNG and JPG each are
PNG, Portable Network Graphics, stores a picture as a grid of dots and packs it without discarding anything. It looks for repetition, such as flat areas of colour, and describes it compactly, so the picture you open is bit for bit the picture that was saved. It can also carry transparency. JPG, also written JPEG, stores the same sort of grid but breaks it into small blocks and keeps only the information the eye is most likely to notice. That is why JPGs are so much lighter than PNGs of the same photograph, and why they are called lossy.
Neither format is better in general. Each is better at certain pictures. PNG is better for screenshots, diagrams, logos and anything with sharp edges or transparency. JPG is better for photographs, where its approximations are invisible and its savings are huge. When you convert PNG to JPG, you are moving a picture to the format that suits it better, provided it is the kind of picture JPG likes.
How much smaller will it be?
For photographs, a JPG is commonly a fifth to a tenth of the size of the PNG. A 20-megabyte PNG photograph can become 2 or 3 megabytes with no change you could see on a screen. For flat graphics, the saving is smaller, and the cost to quality is higher. As a rule of thumb: the more a picture looks like a photograph, the more you gain when you convert PNG to JPG.
Photographs saved as PNG by mistake
One of the best reasons to convert PNG to JPG is that a photograph was saved as PNG when it should not have been. Screenshot tools do this when you capture a photo on screen. Some phone and editing apps do it when you export. Design tools sometimes default to PNG. The result is a photograph that weighs ten times what it needs to and gains nothing from the exactness it is paying for.
If you have a folder of such images, converting them is a quick way to reclaim a lot of space and to make them fit email and upload limits. Check one first to be sure that the picture looks right, then convert the rest. Keep the PNGs until you are happy with the JPGs, and delete them only when you are sure you will not need the exact original pixels.
Backgrounds you might want to keep
If a photograph saved as PNG has a transparent background, for example a product with its background removed, converting it to JPG will fill the background with white. That may be exactly what a catalogue wants, or it may not. Decide before you convert PNG to JPG whether the white is acceptable, and if you need a different colour, add it first in an editor.
Sizes for the web and for email
A picture can be too big for two different reasons: too many pixels or too heavy a format. Converting PNG to JPG addresses the second. If the picture also has far more pixels than the screen needs, say a 4000-pixel-wide photo on a page that shows it at 800, then reducing the pixel count helps as well. You can do that afterwards with the JPG compressor, which lowers the resolution for a still lighter file.
For websites, the combination matters: a right-sized JPG typically loads many times faster than a full-size PNG, which helps both visitors and search rankings. For email, the combination often brings a heavy attachment well within a limit. In both cases, convert PNG to JPG first, then reduce the pixel count if needed, so you start from the cleanest source.
If the result is still too large
If the JPG is still bigger than you want, reduce the resolution a step, or crop away parts of the picture you do not need before you convert. Cropping removes pixels outright, so the file shrinks without lowering the quality of what remains.
How to convert PNG to JPG here
Add your picture
Drop the PNG onto the page or pick it from your device. It is read inside your browser and is not uploaded.
Convert
Press the button. The picture is redrawn once at its original size and saved as a JPG. For an ordinary picture this takes a moment.
Download and compare
Download the JPG and open it beside the original. Check the dimensions, look at any area that was transparent and note the new file size. If the result looks right, you are done.
Questions people ask before converting
Why is my transparent background white?
Because JPEG has no transparency, so anything see-through comes back white. Keep the PNG if you need transparency.
Will the quality drop?
Slightly. JPEG discards detail to get small, and that loss cannot be undone. Photographs rarely show it; sharp text and edges can.
Will the file get smaller?
Almost always, and often dramatically for photographs. For flat graphics the saving is smaller and the quality cost higher.
Is my picture uploaded?
No. Everything runs in your browser and the picture never leaves your device.
Who converts PNG to JPG
Anyone sending photos by email
Smaller files get through attachment limits and arrive faster.
Website owners and bloggers
Photographs saved as PNG slow pages down. Converting them speeds loading.
People filling in forms
Many upload forms accept only JPG. Converting lets the picture through.
Common mistakes
Converting a logo with transparency
It turns white-backed. Keep the PNG for logos.
Converting screenshots with small text
JPEG fuzzes small text. Keep such images as PNG, or reduce their size instead.
Deleting the original
You cannot restore lost detail. Keep the PNG if you will edit the picture again.
Related tools
To go the other way, convert JPG to PNG. For smaller files, compress JPG, compress PNG or try PNG to WebP. To put pictures in a document, use PNG to PDF or JPG to PDF. For a scalable version of a flat-colour image, PNG to SVG traces the shapes, and to label a picture, add a watermark to JPG.
When to convert PNG to JPG, and when not to
Converting is right when the picture is a photograph, or close to one, and has to be lighter: for email, forms, websites, storage and sharing. It is the wrong move for logos, icons and cut-outs that need transparency, for screenshots with small text and for any picture you will edit again, where the lossless PNG is the safer working copy. And it is pointless if the PNG is already small and flat, because the saving will be modest while the quality cost remains.
For the common cases, such as photographs, scans of pictures and product images, it is quick, private and effective to convert PNG to JPG in the browser. Your original is never changed, so you can come back and convert PNG to JPG again whenever you like.
Batches of pictures
If you have many pictures to convert, do them one at a time and keep the originals in a separate folder. Try one first and check it at the size you will use, so you do not have to redo twenty of them. When you convert PNG to JPG in bulk, consistency matters more than speed.
Large pictures and slow devices
Everything runs on your own device, so very large pictures depend on its memory. A twelve-megapixel image is no trouble for a modern phone or computer. A very large panorama may be slow on an older device. If it struggles, give the browser a moment and avoid switching to other apps while it works.
Checking the result properly
After you convert PNG to JPG, open both files side by side at the size you will actually use. Look closely at edges and smooth gradients, where JPEG's loss shows first. If they look the same at that size, you are done. If you see fuzz or banding, the picture may suit PNG better after all, or the original may need a different treatment.
Your picture stays on your device
The conversion happens locally. Your picture is read by your own browser, written as a JPG there and handed back. Nothing is uploaded, so there is no copy on a server and no one else who could see it. For photographs of people and private documents, that is the safe way to convert PNG to JPG.
A worked example
Say you have a photograph saved as a PNG of 4000 by 3000 pixels and 18 megabytes, and a form that accepts at most 2. You drop it here and convert it. You download a JPG of 4000 by 3000 pixels and about 3 megabytes, which looks the same on screen. It is still a little over the limit, so you reduce it with the JPG compressor, and the form accepts the result. The original PNG stays on your computer.
A closing word
The best results come from choosing the format to match the picture. Photographs belong in JPG, where a little loss buys a great deal of lightness; graphics, logos and screenshots belong in PNG, where exactness matters more than size. When a PNG turns out to be a photograph in disguise, converting it is one of the simplest ways to lighten your files, and it takes only a few seconds. Keep the original, convert the copy, and use each format where it shines.
Before you close the page
Check that you downloaded the JPG, that any transparent area looks acceptable on white, and that you kept the original PNG.
One more thing to remember
Whenever you convert PNG to JPG, you make a decision about what matters more: exactness or lightness. For a photograph that is going to be viewed, shared or published, lightness nearly always wins, and the loss is invisible. For anything you may edit again or that depends on transparency and crisp edges, exactness wins, and the PNG should stay. Knowing which case you are in is most of the skill.
Summary
To convert PNG to JPG here, drop the picture and press the button. Every pixel of the image, the exact dimensions and the recorded resolution are kept. Transparency is not kept: JPEG has no transparency, so anything see-through comes back white. JPEG also discards detail to get small, and that loss cannot be undone, so keep the PNG if you will edit the picture again. Nothing leaves your device.