JPG to PNG Converter: Convert JPEG to PNG Online

Convert JPG to PNG

JPEG is built for compact storage of photographs. PNG is built for lossless pixel-perfect reproduction. Converting from JPG to PNG does not add quality, but it does freeze the image in a lossless format that will not degrade further with subsequent edits and saves.

Drop a JPEG file above to convert it to PNG. The conversion runs entirely in your browser.

Why Convert JPG to PNG

Prevent generation loss

Every time you open a JPEG, edit it, and save it again as JPEG, the lossy compression runs again. Each cycle introduces new artifacts and degrades the image slightly. This is called generation loss. After several edit-save cycles, the degradation becomes visible: muddy gradients, smeared edges, ringing around text.

Converting to PNG before you start editing breaks this cycle. PNG saves and reloads are lossless, so you can edit the image as many times as you need without accumulating compression damage. When you are finished, export the final version as JPEG or WebP for delivery.

Add transparency

JPEG has no alpha channel. If you need to remove a background, create a cutout, or composite the image over other content, you need a format that supports transparency. PNG’s alpha channel gives you 256 levels of transparency per pixel, enough for smooth anti-aliased edges.

The typical workflow: convert JPG to PNG, open in your graphics editor, remove the background using selection or masking tools, save as PNG with the alpha channel intact.

Format requirements

Some systems specifically require PNG input. Favicon generators, app icon processors, game engines loading textures, and certain print workflows expect PNG. Converting JPEG to PNG satisfies these requirements while preserving the image content as-is.

What Does Not Improve

JPG to PNG conversion does not improve the image. This is a common misconception.

Resolution does not increase

A 800x600 JPEG becomes an 800x600 PNG. No new pixels are created.

Detail is not recovered

If JPEG compression smeared fine texture or introduced block artifacts, those artifacts are baked into the pixel data. PNG preserves them faithfully. You cannot undo lossy compression by switching containers.

Color depth stays the same

A standard 8-bit-per-channel JPEG becomes an 8-bit-per-channel PNG. The conversion does not upgrade to 16-bit depth.

The value of the conversion is not enhancement. It is preservation: locking the current pixel state into a format that will not degrade it further.

File Size Comparison

PNG files are larger than JPEG for photographic content because lossless compression cannot compete with lossy compression for complex images.

The exact ratio depends on image content. Photos with large uniform areas (sky, walls, solid backgrounds) compress relatively well in PNG. Highly detailed images with lots of texture (foliage, fabric, crowds) produce the largest PNGs.

For web delivery, this size increase is rarely justified. If you are converting JPG to PNG for editing, the larger file size is an expected and acceptable tradeoff. If you want smaller files with no further quality loss, convert to WebP lossless instead.

When to Keep JPEG

Do not convert to PNG just because PNG is “better quality.” If the image is already JPEG and you are using it as-is (displaying on a web page, attaching to an email, posting to social media), converting to PNG only increases file size without any visual benefit.

Keep JPEG when:

• The image will not be edited further
• You are serving it directly to users on the web
• Storage or bandwidth is a concern
• The platform handles JPEG natively

Convert to PNG when:

• You are about to make edits in a graphics application
• You need to add transparency or compositing
• A downstream tool or system requires PNG format
• You are building assets for a design file

For the full range of format options, see the Image Converter. To embed images inline as Base64 data URIs, use the Base64 Encoder.