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JPG To PNG

Turn JPG photos into lossless PNG files, entirely in your browser

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Click Browse JPG files and pick a single photo — or select many JPGs at once for batch conversion.
  2. 2.Each JPG is decoded and redrawn to a PNG at its exact original resolution, right in your browser — nothing is uploaded.
  3. 3.Download your PNG files individually; the original JPGs stay untouched on your device.

About JPG To PNG

JPG and PNG solve two different problems, and knowing which one you are holding decides how your image behaves everywhere it lands. JPG (JPEG) is a lossy photographic format: it discards detail the eye rarely notices to reach small file sizes, which is ideal for camera photos and fast-loading web pages. PNG is a lossless format: it stores every pixel exactly, keeps edges and flat color crisp, and can carry a transparent background. When a workflow demands a PNG — a design tool that rejects JPG, a logo that must sit on any color, a screenshot pipeline, a print asset, or an image you plan to edit and re-export many times — you need a clean, faithful conversion rather than another round of lossy compression.

This converter turns JPG files into PNG entirely inside your browser. When you pick a file, it is decoded and redrawn onto an HTML canvas at its exact original width and height, then exported as a PNG. Because the redraw is one-to-one with no resizing or re-sampling, every pixel of the source is copied faithfully into a lossless container. The conversion cannot invent detail that JPG already threw away, so existing compression artifacts stay as they are — but from this point forward the image is lossless and can be edited and saved again without the generation loss that stacks up every time you re-save a JPG.

Privacy is built in because nothing is uploaded. The whole process runs on your own machine using the canvas API; your photos never touch a server, there is no queue, no size cap imposed by an upload limit, and no account to create. That also makes it fast: conversion happens at local disk speed, and you can batch-convert a whole folder by selecting many JPGs at once and downloading each PNG in turn.

A word on file size and transparency. PNG is lossless, so a converted PNG is frequently larger than the JPG it came from — that is the honest cost of pixel-perfect, re-compressible quality, not a flaw. And because JPG cannot store an alpha channel, the source has no transparency to preserve; the resulting PNG is fully opaque. If you need a genuinely transparent background you will have to remove it separately after converting. Reach for PNG when you need lossless quality, sharp interface graphics, or a format a tool insists on; stay with JPG when the smallest possible photo file is the goal.

Once your PNGs are ready you can keep working right here: shrink them with the image compressor if you need smaller files, or change their dimensions with the image resizer. Everything stays client-side, English-first, and free.

Frequently asked questions

Will converting JPG to PNG improve the quality?
No. Converting to PNG makes the file lossless from that point on, but it cannot restore detail or remove compression artifacts that the original JPG already discarded. What you gain is a format you can edit and re-save repeatedly without further quality loss.
Why is my PNG larger than the original JPG?
JPG is lossy and squeezes photos into small files, while PNG stores every pixel exactly. For photographic images the lossless PNG is often several times bigger — that is the expected cost of pixel-perfect, re-compressible quality.
Are my images uploaded to a server?
No. The entire conversion runs locally in your browser using the HTML5 canvas. Your files never leave your device, there is no upload, and no account is required.
Can I convert several JPG files at once?
Yes. Select multiple JPGs in the file picker and each one is converted to its own PNG, ready to download from the results list.
Does the converted PNG have a transparent background?
No. JPG cannot store transparency, so there is none to carry over — the resulting PNG is fully opaque. If you need a transparent background, remove it separately after converting.

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