JPG to PNG Converter
Convert JPG (JPEG) images to lossless PNG right in your browser. The output preserves your photo exactly, with no further quality loss. Batch-convert as many files as you like and download them individually or as a ZIP — nothing is ever uploaded.
All conversion runs in your browser with the Canvas API — your files are never uploaded. Re-encoding also strips EXIF/location metadata.
Understanding the JPG to PNG Converter
A JPG to PNG converter turns compressed JPEG photos into lossless PNG images. JPG is the most common photo format because it produces small files, but every save re-compresses and discards a little detail. PNG, by contrast, stores every pixel exactly with no further loss, which makes it a better master for editing, layering, or any workflow where you do not want compounding compression damage. It is also the format many design tools and platforms expect for crisp graphics. This converter rebuilds your JPG as a PNG entirely in the browser using the Canvas API, so your photos are never uploaded and remain private on your device.
How it works
The tool decodes each JPG into an off-screen canvas at full resolution, then re-encodes that canvas as PNG. PNG uses lossless compression, so the output preserves exactly what the JPG contained — pixel for pixel — without throwing away any more detail. There is no quality slider because PNG does not trade quality for size the way JPG does. Note that converting cannot recover detail the original JPG already lost; it simply stops any future loss. Each file is processed in turn, the size change is displayed, and you can save images individually or download several together as a ZIP.
Worked example
You have a 600 KB JPG logo mockup that you need to drop into a design tool without further compression. The converter redraws it onto a canvas and exports a PNG that looks identical. The PNG is larger — around 1.5 MB — because it stores every pixel losslessly, but you can now re-save and edit it repeatedly with zero added compression.
Tips & common mistakes
- Remember PNG cannot un-do existing JPG artifacts — it only prevents new quality loss from future saves.
- Expect the PNG to be larger than the JPG, especially for photos, since lossless storage means bigger files.
- Use PNG to PNG as your working format while editing, then export back to JPG or WebP for final sharing.
- PNG keeps text and sharp lines crisper than JPG, so it is ideal for screenshots, diagrams, and logos.
- Converting to PNG does not add transparency — you still need an image editor to erase a background.
Related tools
Frequently Asked Questions
Does converting JPG to PNG improve the quality?
No. PNG is lossless, so it preserves exactly what is in your JPG — but it cannot recover detail that JPG compression already discarded. The PNG will look identical to the source JPG; it just will not lose any further quality when you re-save it.
Why is my PNG larger than the original JPG?
PNG stores every pixel without lossy compression, so photos almost always end up bigger than the JPG they came from. That is the trade-off for a lossless, re-editable file. For sharing photos, JPG or WebP usually gives smaller files.
When should I convert a JPG to PNG?
PNG is useful when you need a lossless master to edit further, want crisp text and lines without JPG artifacts, or need a format that some tools and design apps prefer. For adding transparency you would still need to erase a background in an image editor afterward.