Are my images uploaded anywhere?

No. The conversion runs entirely in your browser using the HTML canvas API. Your images never leave your device.

What happens to transparent areas?

JPG has no transparency channel, so any transparent pixels are flattened onto the background colour you pick (white by default) before encoding.

Will the JPG look exactly like the PNG?

JPG is a lossy format, so at lower quality settings you may see slight artefacts, especially around sharp edges and text. Keep quality high for the closest match; the file will still be much smaller than the PNG.

How much smaller will the JPG be?

For photographic PNGs the JPG is often 60–90% smaller. For flat graphics, screenshots or text-heavy images the saving is smaller and JPG may add visible fringing, so keep quality high or consider WebP.

What quality setting should I use?

The slider runs 10%–100% (default 90%). 90% is a good balance of size and fidelity for most images. Drop to 70–80% only when you need a smaller file and can accept mild softening around edges.

Why is my transparent logo now on a white box?

JPG cannot store transparency, so the transparent area is filled with the background colour. Pick a colour that matches where the image will sit, or keep the image as PNG/WebP if you need transparency.

Can I convert multiple PNGs at once?

Yes. Drop several .png files and they are all converted in one batch with the same quality and background, each with its own download button.

What is the PNG to JPG Converter?

Free PNG to JPG converter. Turn PNG images into smaller JPEG files instantly in your browser, with an adjustable quality slider and background colour for transparency — no upload, no signup, your files never leave your device. It runs free in your browser on Gera Tools, with nothing uploaded.

PNG to JPG Converter

Name: PNG to JPG Converter
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

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Convert PNG to JPG in your browser

This tool converts PNG images to JPG/JPEG entirely in your browser, with a quality slider and a background colour for transparent areas. It’s ideal for shrinking large PNG screenshots and exports, or meeting a JPG-only upload requirement — all without uploading your files.

How it works

Each PNG is decoded and drawn onto an HTML <canvas>. Because JPG has no alpha channel, the canvas is first filled with your chosen background colour (white by default), then the image is drawn on top, so transparent pixels become solid. The canvas is re-encoded with canvas.toBlob("image/jpeg", quality) at the quality you set. Each result shows the original and new file size.

Quality and file size guide

Quality	Look	Relative size	Best for
100%	Near-identical	Largest JPG (~50–60% of PNG)	Archival, print masters
90% (default)	Imperceptible loss	Much smaller than PNG	Web photos, emails
70–80%	Mild softening on edges/text	Smallest usable	Thumbnails, previews
Below 60%	Visible blocking artefacts	Tiny files	Low-bandwidth only

For most purposes the 90% default is the right choice: it gives a dramatic file size reduction with no visible quality loss at normal screen viewing distances.

Handling transparent backgrounds

JPG cannot store transparency. Pixels that are transparent in your PNG are “flattened” onto the solid background colour you choose before the JPEG is encoded. Common choices:

White — the default; correct for documents, product photos on white backgrounds, and print-ready exports.
Black — used when the image will sit on a dark page or app UI.
Match your page background — for example a #f5f5f5 grey or a brand colour, so the transparent area blends seamlessly after conversion.

If the image needs to remain transparent in use — for example a logo that sits on varying backgrounds — keep it as PNG or convert to WebP/AVIF instead.

When PNG to JPG is the right choice

Uploading to a platform that accepts only JPEG (some CMSs, social networks, or client portals still reject PNG uploads).
Reducing the weight of a large photographic PNG where the lossless encoding wastes space.
Meeting a file-size limit for an email attachment or form upload.
Batch converting a folder of screenshots taken on macOS or Windows (which default to PNG) before publishing them to a web page.

For images that contain text, sharp lines, or icons, staying at 90%+ quality or using WebP/PNG avoids the fringing artefacts that JPEG introduces at lower settings around high-contrast edges.

Everything happens locally — your images are never uploaded, stored, or seen by anyone.