JPG to PNG Converter — Free & Private

Convert JPG images to PNG in your browser with optional oxipng lossless optimization. No uploads, no server processing — your images stay on your device. Ideal for editing, logos, and further processing.

Drag & drop JPG files here or

Supports .jpg and .jpeg files

80%

Converting...

Converted Images

Convert JPG to PNG for Editing, Archiving & Transparency Workflows

JPG is great for storing finished photos, but it’s a poor choice when you need to edit an image repeatedly, preserve pixel-perfect fidelity, or prepare artwork that might later need transparency. Converting your JPG files to PNG locks in the current quality losslessly, so every future save keeps the same pixels instead of gradually degrading the image.

When Should You Use JPG to PNG?

  • Editing workflows — every time you save a JPG, it loses a little more quality. PNG holds the image perfectly between edits.
  • Design work — PNG is the expected format for logos, mockups, UI assets, and anything headed into Photoshop, Figma, or Illustrator.
  • Archival & print — when you want the best possible quality preserved, PNG captures every pixel exactly.
  • Software compatibility — some tools and document formats specifically require PNG rather than JPG.

How the Conversion Works

Your JPG file is decoded by your browser, converted to lossless PNG, and then optionally run through oxipng — an open-source PNG optimizer that finds the smallest possible lossless encoding. Oxipng never changes a single pixel; it just searches for more efficient ways to store them. You get the same quality as the source, in a format ready for editing, with reasonable file size.

About File Size

PNG files are almost always larger than the JPG original because PNG preserves every pixel losslessly while JPG uses aggressive compression suited to photos. Expect the PNG output to be 3–10x the size of your JPG input. The Compression slider controls how aggressively oxipng searches for size reductions — higher settings take longer but produce smaller files.

Privacy by Design

The entire conversion happens inside your browser using WebAssembly. No upload, no server processing, no account required. Works offline after the first page load. Safe for confidential documents, family photos, and anything else you’d rather not send to a third party.

FAQ

Frequently Asked Questions

PNG is a lossless format that preserves every pixel exactly and supports transparency. Converting JPG to PNG is useful when you plan to edit the image further — PNG does not lose quality on re-save. It is also the standard format for logos, diagrams, screenshots, and any image you want to manipulate in Photoshop, GIMP, or similar editors without generation loss.

No. The JPG source already lost some detail when it was originally encoded, and conversion cannot recover those details. PNG simply stops further quality loss from that point onward. Think of it as locking in the current quality — useful for editing and archiving, but not an upgrade over the original JPG.

PNG uses lossless compression, so it must store every pixel exactly. JPG uses lossy compression tailored to photographs, discarding imperceptible detail to achieve much smaller files. For photos, expect PNG output to be 3–10x larger than the JPG input. Use the Compression slider to apply oxipng lossless optimization, which can shave 10–40% off the size without any quality loss.

No. All conversion happens entirely on your device using WebAssembly. Your JPG files are never transmitted, uploaded, stored, or accessed by any server. The tool works offline after the initial page load.

PNG compression is always lossless — pixels are never changed. The slider controls how aggressively oxipng searches for a smaller encoding. Higher values produce smaller files but take longer to process. The default 80% balances file size and speed well for most inputs.