PNG to JPG
The conversion that makes a file several times smaller — and the one where transparency turns black if nobody thinks about it first.
Runs on your device — images are never uploadedDrop your images here
or click to browse — as many as you like
PNG
Opens anywhere. No transparency, and each save loses a little.
90 is the sensible default. Below about 70 the edges of text and flat colour start to show it.
Converting is not compressing. Going to PNG makes most photographs larger, and no conversion can put back detail an earlier JPG already discarded.
How it works
Three steps, no account, and the images never leave your computer.
Drop the PNG files in
As many as you like. Anything your browser can open is accepted, so a mixed folder is fine too.
JPG is already selected
Change it if you want something else, and adjust the quality if the format has one. The panel warns you if transparency is about to be lost.
Convert and save
One file downloads on its own; several come down as a ZIP. Each shows whether it ended up smaller or larger than it started.
Why people do this conversion
An upload form that refuses PNG
Job applications, government portals and older company systems frequently accept JPG and nothing else.
A photograph that arrived as PNG
Screenshots of photos, exports from design tools and some phone screenshots are PNGs many times larger than they need to be.
Getting under an attachment limit
A 12 MB PNG becomes a 1.5 MB JPG that looks the same, which is often the difference between an email sending and not.
Sending to a print shop
Print workflows are conservative. JPG on a white background is what they expect and what will not come back with a question.
Smaller files, and one thing to decide first
This is the most common image conversion there is, and it is usually the right one. A photograph saved as PNG is enormous for no benefit: PNG stores every pixel exactly, which matters for a logo and is wasted on a picture of a beach. The same photograph as JPG is routinely five to ten times smaller and looks identical.
There is exactly one decision to make, and it is the thing that goes wrong.
JPG cannot hold transparency
If your PNG has a transparent background — a logo, an icon, a cut-out product photo — JPG has nowhere to put it. Every pixel in a JPG has a colour, so the transparent parts have to become something.
Left to most software, they become black, because "no light" and "black" are the same thing to a decoder that has not been told otherwise. That is why a logo converted carelessly comes back on a black rectangle.
This page fills transparency with white by default and lets you choose any colour. Pick the colour of the background it will sit on and the join disappears.
When to leave it as PNG
The size argument only applies to photographs. For anything with hard edges — a screenshot, a chart, a diagram, text on a flat background — JPG is the wrong format. Its compression works by smoothing, and smoothing is exactly what a sharp edge does not want. You get a faint grey halo around every letter, and the file is often no smaller than the PNG was.
| What the PNG contains | Convert to JPG? |
|---|---|
| A photograph | Yes — much smaller, no visible difference |
| A screenshot with text | No — keep PNG, the text will blur |
| A logo with transparency | Only if the background can be a solid colour |
| A chart or diagram | No — flat colour compresses badly and looks worse |
| A scan of a document | Yes if it is a photograph of paper, no if it is clean text |
It cannot be undone
JPG discards detail permanently. Converting back to PNG afterwards gives you a large file containing the damaged version — the original is not recoverable from it. Keep the PNG if you might need to edit later; the JPG is the copy you send.
Common questions
Will my transparent background turn black?
Not here. Transparency is filled with white by default, and you can choose any colour before converting. Black is what happens in software that does not ask.
How much smaller will the file be?
For a photograph, typically five to ten times smaller. For a screenshot or a diagram, often barely smaller at all, and it will look worse — those should stay as PNG.
Does converting lose quality?
Yes, a little, because JPG is lossy. At the default quality of 90 it is not visible on a photograph. On text and sharp edges it is visible immediately.
Can I convert back to PNG later?
You can, but it will not recover anything. PNG will faithfully store the detail the JPG already threw away, in a much larger file. Keep the original PNG if you might need it.
Is my image uploaded?
No. Your browser does the decoding and encoding itself, so nothing is transmitted and there is no size limit or queue.
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Every one of them runs on your device. No uploads, no accounts.