Dramatically smaller files
Photographic PNGs are often 5–10× larger than an equivalent JPG. Converting is the single fastest way to get an image under an email, form or CMS size limit.
PNG to JPG Converter
Convert PNG images to JPG with an adjustable quality slider.
- Upload
- Batch upload supported · 25 MB max
- Privacy
- Nothing is uploaded
- Cost
- Free · no sign-up · no watermark
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Processed entirely on your device
Your file is read, transformed and re-encoded inside this browser tab using JavaScript. There is no upload endpoint — nothing leaves your machine, nothing is stored, and the result is created as a local object URL that disappears when you close the page.
Overview
About the PNG to JPG Converter
Shrink screenshots, photos and exports by converting PNG to JPG. Pick the quality, choose a background colour for transparent areas, and download instantly.
PNG is the right format for line art and the wrong format for photographs. If you have ever tried to attach a phone screenshot or a camera export to a form with a 2 MB limit, you have hit that mismatch: PNG stores a photograph as millions of individually-described pixels, while JPG stores it as a set of frequency coefficients tuned to what human eyes actually notice.
Choosing a quality level
The quality slider controls how aggressively the encoder quantises those coefficients.
- 95–100% — near-transparent. Use for archival copies and images that will be re-edited.
- 80–90% — the practical default. Photos look identical at normal viewing distance and files shrink by 60–80%.
- 60–75% — visibly softer on gradients and fine texture, but fine for thumbnails and previews.
- Below 60% — blocking and banding appear. Only worth it under a hard size cap.
Handling transparent backgrounds
Because JPG cannot represent "no pixel", the converter composites your image over a solid colour before encoding. White is the safe default for documents and product photography. Choose a colour that matches the destination — a dark grey if the image will sit on a dark page — and the flattening becomes invisible.
If the image genuinely needs transparency, the correct move is not JPG. Use the WebP converter instead: WebP supports both a real alpha channel and lossy compression, so you get small files without losing the cut-out.
Keeping your originals
Treat conversion as a one-way export. Keep the PNG master, and generate JPG copies for delivery. Re-opening a JPG, editing it and saving again compounds the loss with every cycle, which is how images end up with that unmistakable smeared look.
Step by step
How to use the PNG to JPG Converter
Add one or more .png files by dragging them in or clicking the upload area.
Set the JPG quality — 80–85% is the sweet spot for most photographs.
Pick a background colour for any transparent pixels, since JPG has no alpha channel.
Press Convert to JPG and compare the before/after file sizes.
Download each image, or all of them if you converted a batch.
Why use it
Benefits and common use cases
What this tool is good for, and what it deliberately does not try to do.
Quality you control
The slider maps directly to the encoder's quality parameter, so you decide where the size-versus-detail balance sits instead of accepting a preset.
Transparent areas handled deliberately
JPG cannot store transparency. Rather than silently flattening onto black, this tool lets you choose the fill colour — usually white to match a document.
Compatible everywhere
JPG opens on every device made in the last three decades, including cameras, car displays, print kiosks and government upload portals.
Questions
Frequently asked questions
Short, honest answers about quality, limits and privacy.
What quality setting should I use?
For photographs, 80–85% is visually indistinguishable from the original while cutting file size substantially. For images with sharp text or thin lines, stay above 90% — lossy compression smudges high-contrast edges first.
What happens to transparency?
JPG has no alpha channel, so transparent pixels must be filled with a solid colour. The tool defaults to white and offers a colour picker. If preserving transparency matters, keep the image as PNG or convert it to WebP instead.
Does converting PNG to JPG lose quality?
Yes, JPG is lossy — that is precisely why the file gets smaller. One conversion at high quality is effectively invisible. The problem is repeated re-saving: each pass discards more detail, so keep your PNG master and only convert copies.
Why is my JPG larger than the PNG?
It happens with flat-colour graphics such as logos, charts and screenshots. PNG compresses large uniform areas extremely well while JPG spends bytes on ringing artefacts around the edges. For that kind of image, PNG or WebP lossless is the better format.
Can I convert a batch of PNGs?
Yes. Add up to 20 files and they will all be converted with the same quality and background settings, then listed with individual download buttons and a size comparison for each.