Convert JPG to PNG without further quality loss
Convert compressed JPEG images into lossless PNG format. Universal compatibility, pristine rendering, completely processed on your device.
- Format
- Lossless PNG
- Quality
- No further degradation
- Leaves your device
- Never
Which output should you pick?
Choose PNG when
- You need a lossless format for editing in design software.
- You want to avoid cumulative compression artifacts on resave.
- A platform or workflow explicitly requires PNG format.
Stay with JPG when
- File size matters more than lossless editing capability.
- The image is a standard photo where JPG efficiency shines.
- You have limited disk space or strict upload byte limits.
How it works
Choose your JPG file
Select any JPG or JPEG image from your device. It stays in your browser tab.
PNG is preset
PNG is pre-selected as the target format for instant conversion.
Convert
Click convert to render the image into an uncompressed PNG bitstream.
The picture never leaves your device
Compressing or converting a photo usually means sending it to somebody else's computer and getting a new one back. Here the work happens in the page you are already looking at: your browser opens the file, the tool rewrites it, and the browser hands you the result.
- Opened from your disk by your browser — not sent anywhere first.
- Held in the tab while the tool works, then dropped.
- Saved to your device by your browser, not by a link to a server.
- Closing the tab clears the working copy completely.
- No account, so nothing is ever attached to an identity.
- No tracking of what you worked on or what was inside the file.
There is no queue and no waiting room. The picture is worked on in front of you and released the moment the tab closes. You can read more about how the conversion runs on your own device, or check our guide to verifying it in DevTools.
What people use it for
Making a format open everywhere
PNG, JPG and WebP each suit different jobs. Convert once and stop worrying about which app can read the file.
Shipping a lighter page
Hero images are usually the heaviest thing on a site. Getting them smaller before they reach your CMS is the fastest performance win available.
Sending photos on a weak signal
On hotel Wi-Fi or a poor mobile connection a full-resolution photo can sit at sending for minutes. A smaller copy goes through in seconds.
Preparing marketplace listings
Selling platforms set their own caps on size and dimensions. Get inside them before you start filling in the form.
Formats & limits
What this tool accepts, what it produces, and what it will never ask you for.
- Input
- JPG and JPEG images
- Output
- PNG, JPG or WebP
- Maximum file size
- Set by your device, not by a plan
- Files per run
- Several at once
- Sign-up required
- None
- Watermark
- Never added
- Works offline
- Yes, once the page has loaded
- Supported browsers
- Any current Chrome, Edge, Firefox or Safari
When something goes wrong
Damaged files, and formats outside the list above, stop with a plain message rather than a spinner that never finishes. If a picture opens in your gallery it will normally open here.
The format is not supported. Convert it to PNG or JPG first, or try one of the other image tools.
Why not an upload site
An upload-based tool is a form that posts your picture to someone else's machine. Take that step out and a lot of small annoyances disappear with it.
A typical upload site
This tool
Questions
Does converting JPG to PNG improve its original quality?
No converter can recreate detail that was already lost when the image was saved as a lossy JPEG. However, converting to PNG prevents any further loss during editing and saving.
Will the PNG file be larger than the JPG?
Yes, usually larger. PNG uses lossless compression which preserves every pixel exactly, whereas JPG discards high-frequency detail to achieve smaller file sizes.
Does JPG to PNG create transparency?
No. Standard JPGs do not contain transparency data. The resulting PNG will have a solid background matching the original JPG.
Do you store or upload my images?
Zero uploads. All processing takes place locally in your browser. Turn off your Wi-Fi or inspect DevTools Network tab to verify.
Is there a file size limit?
No fixed limit is imposed by the tool. The practical ceiling is how much memory your device has free, because the whole job runs inside this browser tab.
Does it work without an internet connection?
Yes, once the page has loaded. Nothing is fetched while you work, so a dropped connection does not interrupt a run.