MultiKit

JPG to PNG Converter: Save JPG Pictures as Lossless PNG

  • Free
  • No sign-up
  • Runs in your browser
  • Version 1.0.3
  • Last updated 2026-10-30
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Need a PNG file because a program, a website or a print shop asks for one? Convert your JPG here and keep control of the file size.

    Everything you enter is processed in your browser and is never sent to a server.

    Browsers:Chrome57+Edge79+Firefox52+Safari15+Opera44+Samsung Internet7.0+Browsers

    How to use

    1. Drop your JPG files onto the box, or choose them. Up to 50 at once.
    2. Leave Optimize PNG ticked for the smallest PNG, or untick it for a faster result.
    3. Download each PNG, or all of them as a ZIP.

    Examples

    photo.JPG, converted to PNG
    → photo.png
    A 1200×800 JPG, set the width to 600
    → 600×400
    Shrinking the picture is the main way to make a PNG smaller.
    A JPG with visible blocky patches, converted to PNG
    → The patches are still there
    PNG keeps the picture exactly as the JPG shows it. It cannot bring back detail the JPG already lost.

    How it works

    This page is the image converter with JPG to PNG already chosen. The picture is decoded by your browser, then written as PNG by an open-source PNG encoder and, if you leave Optimize PNG on, recompressed by OxiPNG, which finds a smaller encoding of the same pixels.

    The PNG output is checked for a valid header, and OxiPNG is checked not to make a file larger. File naming and size calculations are tested as well.

    Sources

    Frequently asked questions

    Does converting JPG to PNG improve the quality?
    No. A JPG has already lost some detail, and PNG just stores what is left without losing more. The picture will look the same as the JPG, and the file will usually be larger.
    Why would I want a PNG, then?
    Some programs and websites only accept PNG. PNG is also safe to edit and save over and over, because it never loses more detail, while every save as JPG loses a little. It is a good format to work in before a last export.
    Will the PNG have a transparent background?
    No. A JPG has no transparency, so the PNG is a plain picture. To make a background transparent you need an image editor.
    Why is my PNG so much larger?
    PNG stores every pixel without losing anything, which for photos is much more data than JPG's lossy compression. The OxiPNG option shrinks it a little further; making the picture smaller helps most.
    Are my pictures uploaded?
    No. They are converted in your browser.
    Version history
    • 1.0.3 — Puts the format and quality options and the size options on one line on a wide screen, instead of two lines with empty space beside them.
    • 1.0.2 — Makes the search title and description state the supported task, key formats and privacy benefit more clearly.
    • 1.0.1 — Reports conversion completion and failure to connected workflows, so batch runs wait for the full result and ignore cancelled or superseded work.
    • 1.0.0 — First release.

    Last updated: