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Convert JPG to PNG

Free JPG to PNG converter that runs in your browser. No upload, no signup, no watermark. Files never leave your device.

Conversion Successful
100% local. Your file is processed in this tab and never uploaded.

How to Convert JPG to PNG

Four steps. No uploads, no account, no waiting.

1

Upload your JPG file

Drag and drop your JPG file into the converter above, or click to browse and select it from your device. Files stay on your machine and are never uploaded to a server.

2

Select PNG as the output format

Open the output format picker and choose PNG. The converter automatically detects the input and only shows compatible output formats for your file.

3

Adjust settings (optional)

Use the sliders icon to crop, resize, rotate, or set the output quality before converting.

4

Convert and download

Click Convert to run the conversion in your browser. The output PNG file downloads automatically when ready, with no server round-trip and no watermarks.

Why Convert JPG to PNG?

JPG compression introduces blocky artifacts on images with sharp edges, text overlays, and solid-color regions.

PNG uses lossless compression that preserves every pixel exactly, making it the standard for logos, UI screenshots, and graphics where color accuracy matters more than file size.

JPG
PNG
Compression
Lossy
Compression
Lossless
Transparency
No
Transparency
Yes (alpha channel)
Max colors
16.7 million
Max colors
16.7 million + alpha
Animation
No
Animation
No (APNG rare)
Browser support
Universal
Browser support
Universal
Typical use
Photography
Typical use
Graphics, screenshots

Related Conversions

Other common format conversions you might need.

PNG to JPG
Convert PNG files to JPG
JPG to PDF
Convert JPG files to PDF
WebP to PNG
Convert WEBP files to PNG
SVG to PNG
Convert SVG files to PNG

Frequently Asked Questions

Will converting JPG to PNG improve quality?
No. Converting JPG to PNG stops further quality loss but does not restore detail already lost by the original JPG compression. Use PNG from the start when quality is critical.
Why is my PNG file larger than the original JPG?
PNG is lossless and stores pixel data more completely than JPG, so the file size is almost always larger. This tradeoff is intentional when you need exact pixel fidelity.
Does PNG support transparency?
Yes. PNG supports full alpha channel transparency, which is why it is the standard format for logos, icons, and UI graphics where a transparent background is needed.
Can I batch-convert JPGs to PNG in the browser?
The browser converter handles one file at a time. For batch conversion of dozens or hundreds of files, the TeraConvert desktop app converts entire folders at once.
Is this conversion really free, and is my file private?
Yes. The browser conversion runs entirely on your device using WebAssembly. Files are never uploaded to a server and are discarded from memory when you close the page. There is no file size tracking, no account link to your upload, and no cloud storage.
Do I need to create an account to convert files?
No. The browser converter works without signing in. An optional account is only needed if you want to save favorites, track conversion history, or upgrade to the desktop app with Polar license activation.
How fast is the conversion?
Most browser conversions complete in a few seconds. Large files (over 100 MB) or heavy formats (video, high-page PDFs) take longer depending on your device's CPU and available memory. The desktop app runs significantly faster using native engines.

Convert JPG to PNG Faster with TeraConvert Desktop

Batch files. No size limits. Native engine. No browser tab.

Batch convertNo size limitsNative speed100% private
Get TeraConvert for MacOne-time purchase. No subscription.