PNG to JPG Converter - Free & Private

Turn heavy PNG screenshots and graphics into compact JPEG files, up to 20 at a time, without uploading anything.

🖼️

Drop PNG files here or click to select

Up to 20 files at once. Nothing is uploaded, conversion runs in your browser.

JPEG quality: 90%

85 to 95 keeps photos looking identical at a much smaller size.

Background for transparent areas

JPEG has no transparency, so see-through pixels get this colour.

Converting PNG to JPG

A PNG screenshot straight off a modern laptop is often 2 to 4 MB, because PNG stores every pixel exactly using lossless DEFLATE compression. JPEG throws away detail the eye barely registers and typically brings that same screenshot down to 150 to 400 KB. This converter re-encodes your PNG through the canvas in your browser, so a folder of bulky screen grabs turns into something you can actually attach to an email or upload to a portal with a 2 MB cap.

The people who reach for this most are not photographers. They are jobseekers uploading a scanned diploma to an application portal, tenants sending photos of a damaged wall to a housing association, support agents attaching screen captures of a bug, and sellers listing items on marketplaces that silently reject anything over a few megabytes. In every one of those cases the PNG is technically perfect and practically useless, because the upload form refuses it.

PNG has an alpha channel and JPEG does not, so every transparent pixel has to be given a colour before encoding. That is what the background picker above controls. Leave it white if the image is going into a document or an email, set the exact hex of your site background when the graphic sits on a coloured page, and choose black or dark grey for anything that will be viewed in a dark interface. Get it wrong and you get a glowing box around a logo.

Quality 85 to 92 is the sweet spot for photographs and design mockups. Below roughly 75 the 8 by 8 pixel blocks that JPEG works in start to show as ringing around high contrast edges, which is exactly where screenshots suffer most: black text on a white panel. If your PNG is mostly flat colour and crisp type, such as a chart or an interface capture, test at 95 first and only drop lower when the upload limit forces your hand.

Nothing leaves your machine. The file is decoded, drawn onto a canvas and re-encoded locally, which matters when the screenshot shows an internal dashboard or a customer record. If the result is still above the limit you are fighting, the Image Compressor gives you finer control over the quality curve, and the Image Resizer cuts the pixel dimensions first, which almost always saves more bytes than squeezing quality further.

How the PNG to JPG Converter Works

01Drop your PNG files onto the upload area, or click it to pick them from a folder
02Set the background colour that transparent pixels should become, since JPEG cannot store transparency
03Move the quality slider, starting around 90 for screenshots and design work
04Download each JPEG on its own, or use Download all when you converted a batch

Choosing the right quality for a PNG to JPG conversion

The one decision that really matters here is quality, and the right number depends on what the PNG contains rather than on how big it is. Photographs and rendered mockups tolerate quality 85 comfortably, because JPEG was designed for continuous tone content and the discarded detail sits in places the eye skips over. Screenshots are the opposite case: black text on a light panel puts a hard edge inside every 8 by 8 block the encoder works with, and the result is a faint halo known as ringing. Start those at 92 to 95 and only go lower when an upload limit forces it. If the file is still too heavy at 95, reduce the pixel dimensions instead of the quality, since halving the width removes roughly three quarters of the data while leaving edges crisp. The second decision is the background colour. Anything transparent becomes solid, so match the surface the image will sit on. White works for documents and email, while dark grey or black avoids a glowing rectangle around a logo that will be placed in a dark interface.

When to Use a PNG to JPG Converter

Convert when the destination cares about file size and does not need transparency. Upload forms with a 2 MB ceiling, email attachments, marketplace listings, help desk tickets and job application portals all fall into that group. Keep the PNG when the image has a transparent background you still need, when it is a diagram or chart with fine text that will be zoomed into, or when the file is a master you will edit again later. Converting is a one way trip, because the detail JPEG discards cannot be recovered by converting back, so keep the original PNG alongside the JPEG you send.

Common Use Cases

Shrink a 4 MB screenshot so it fits an upload form that caps attachments at 2 MB → Compress Images Online
Flatten a logo onto a white background before dropping it into a printed document
Prepare scanned certificates and identity photos for an application portal that rejects PNG
Cut the size of a folder of design exports before emailing them to a client → Image Resizer
Convert product photos exported as PNG into the JPEG that most marketplace listing forms expect

Expert Tips

Convert a copy, never your only version. JPEG discards data permanently and the original PNG is your only route back.
For screenshots with small text, quality 95 at a smaller pixel width beats quality 70 at full width every time.
Set the background swatch before you drop the files in, because the colour is baked in during conversion and cannot be changed afterwards.

Frequently Asked Questions

Why is my JPG bigger than the PNG it came from?→

That happens with flat graphics. PNG compresses runs of identical pixels extremely well, so a simple chart or a logo on a plain background can already be tiny. JPEG has to describe the same area as frequency data and adds overhead on top. When the JPEG comes out larger, the PNG was the better format and you should keep it.

What happens to the transparent parts of my PNG?→

They are filled with the colour you pick in the background swatch before the JPEG is written. JPEG has no alpha channel at all, so there is no way to preserve transparency. Match the colour to the page, slide or document the image will end up on.

Does converting to JPG remove the metadata in my PNG?→

Yes. The image is redrawn onto a blank canvas, so text chunks, colour profiles and any editing history stored in the PNG are dropped. The output is pixel data only, which is often exactly what you want before sending a file to someone outside your organisation.

Can I convert the JPEG back to PNG later?→

You can, but it will not restore anything. The compression is lossy and permanent, so a round trip gives you a large file that still contains the JPEG artefacts. Keep the original PNG if there is any chance you will edit the image again.

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