iformat.io Logo iformat.io

JPG to PNG Converter

Convert JPG images to PNG online for free. Use this converter when you need a lossless image output for editing, screenshots, sharp graphics, or transparent workflows.

Converting JPG to PNG re-encodes the image into the PNG container while preserving resolution and color information. The trade-off depends on the target format: lossy targets (JPG, WebP) shrink file size; lossless targets (PNG, TIFF) preserve every pixel exactly.

Drop JPG files here
or click anywhere in this box to choose files
Files deleted within 24 hours TLS-encrypted upload No sign-up required Batch convert supported

Max file size 50MB. Sign up for more.

What to expect when converting JPG to PNG

Typical file-size change
2–5× larger
Example

A 1 MB JPG typically becomes 2 – 5 MB as PNG.

Quality: Lossless — the conversion does not improve quality (any JPG compression artifacts in the original are preserved exactly).

Best for: adding transparent backgrounds, layering in design software, archival.

Avoid when: you only need the photo as-is and want a smaller file.

Tip: PNG can't undo JPG artifacts. If the source has visible compression noise, it will be preserved at higher fidelity in PNG — bigger file, same flaws.

Switch JPG Images to PNG in 3 Steps

Change image format for better compatibility, smaller files, transparency support, or a more web-friendly delivery format.

Upload the Source Images

Drag and drop your JPG files or click to browse. Supports photos, screenshots, graphics, and images with transparency. Batch upload multiple files for bulk conversion.

Create the New Format

Our engine converts your JPG to PNG while preserving the original resolution and DPI. Alpha transparency and embedded colour profiles (sRGB, Adobe RGB) are retained where the target format supports them.

Download the Converted Images

Download your converted PNG images individually or as a ZIP archive. Image quality is maintained at the original resolution — no downscaling or watermarks applied.

Why Convert JPG to PNG

Alpha Transparency Support

PNG is the go-to format for images with transparent backgrounds. Logos, icons, overlays, and UI elements can be placed on any background color or pattern without a white box around them.

Lossless Image Quality

PNG compression is completely lossless — every pixel is preserved exactly as the original. No matter how many times you open, edit, and re-save a PNG file, quality never degrades.

Perfect for Screenshots

Text, code, UI elements, and sharp edges stay crisp in PNG because there are no compression artifacts. Screenshots converted to PNG remain perfectly readable at any zoom level.

Web Graphics Standard

PNG is the standard format for website graphics, icons, and illustrations. All browsers render PNG files with full transparency and color accuracy without any plugins or special handling.

16-Bit Color Depth

PNG supports up to 48-bit true color and 16-bit grayscale, capturing subtle gradients and color transitions that 8-bit formats cannot reproduce. Ideal for medical imaging, scientific data, and professional photography.

JPG vs PNG: Side-by-side

Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.

Property JPG PNG
Full name JPEG (Joint Photographic Experts Group) Portable Network Graphics
Year introduced 1992 1996
Developer / standard body JPEG Committee PNG Development Group / W3C
MIME type image/jpeg image/png
File extension .jpg / .jpeg .png
Compression Lossy (DCT-based) Lossless (DEFLATE)
Color / data depth 24-bit truecolor 24-bit truecolor + 8-bit alpha
Max dimensions / size 65,535 × 65,535 px 2,147,483,647 × 2,147,483,647 px
Transparency No Yes
Animation No APNG extension only
Standard / specification ISO/IEC 10918 W3C / ISO/IEC 15948
Best for Photos, web images, email attachments Logos, screenshots, graphics with transparency or sharp edges

About the JPEG Format

JPEG (Joint Photographic Experts Group) is a widely used image format created in 1992 by the JPEG committee. It employs DCT-based (Discrete Cosine Transform) lossy compression, which reduces file size by selectively discarding visual information that the human eye is least likely to notice. This makes JPEG one of the most efficient formats for storing photographic images while maintaining acceptable visual quality.

JPEG is best suited for photographs, complex images with smooth colour gradients, and any scenario where small file size is more important than pixel-perfect accuracy. Its primary strength is the ability to achieve dramatic file size reductions with minimal perceptible quality loss. However, JPEG does not support transparency, is not ideal for text or sharp-edged graphics (which can appear blurry), and repeated editing and saving will degrade quality over time due to generation loss.

Why Convert JPG to PNG and When It Helps

Key points covered on this page, including compatibility notes, workflow tips, and practical quality trade-offs.

Compatibility-first image conversion Useful for uploads and sharing Transparency and format trade-offs Editing and web publishing workflows

Convert JPG images to PNG in your browser. Use this converter when you need a lossless image output for editing, screenshots, sharp graphics, or transparent workflows.

This conversion is useful when JPG is awkward for upload forms, browsers, email, Windows tools, design software, or web publishing and PNG fits the next step better. PNG is the safer target when sharp graphics or transparent areas matter.

Use this workflow for product images, screenshots, iPhone photos, design exports, CMS uploads, and everyday sharing when compatibility, transparency behavior, or file size matters.

JPG to PNG FAQ

Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert JPG files to PNG.

How do I convert JPG to PNG online?

Upload your JPG image, choose PNG as the output format, and download the converted file when processing finishes. This page is built for exact JPG to PNG conversion.

Why would I convert JPG to PNG?

PNG is usually preferred for graphics, screenshots, and cases where transparency matters.

Can I convert JPG to PNG without losing too much quality?

It depends on how the source and target formats handle compression. The best format depends on whether you care more about smaller files, editing quality, transparency, or compatibility.

Will converting JPG to PNG keep transparency?

PNG supports transparency, so transparent areas can usually be preserved when the source format supports them too.

Will converting JPG to PNG change file size?

File size can become larger or smaller depending on the source image, the target format, and whether the output uses stronger compression or keeps more visual detail.

Will converting JPG to PNG make the file size smaller?

It often does when the target format is more compression-friendly, but the result depends on the source file and what kind of visual quality you need.

Can I batch convert multiple JPG files to PNG at once?

Yes. Batch conversion is useful for product images, screenshots, design assets, photo libraries, and website workflows.

Is it safe to convert JPG to PNG online?

Yes. This converter uses temporary browser-based processing with automatic cleanup after conversion.

Does converting JPG to PNG improve image quality?

No. PNG is lossless — it preserves whatever pixels it receives. Any JPG compression artifacts in your source image (visible block-noise around sharp edges, ringing, mosquito noise) carry over unchanged into the PNG. The PNG will be larger but no clearer.

Why is my converted PNG much larger than the original JPG?

JPG uses lossy compression that discards visual information. PNG keeps every pixel exactly. The size difference (typically 2–5×) reflects the data JPG threw away. PNG cannot bring that data back — it just stores the result more faithfully.

When does it make sense to convert JPG to PNG?

Three legitimate cases: (1) you need to add transparency (e.g., remove a background) — PNG supports an alpha channel that JPG lacks; (2) you're going to edit the image repeatedly and don't want compression to compound with each save; (3) software in your workflow requires PNG input.