Free JPG to PNG Converter
Re-save JPG photos as lossless PNG files, ready for editing or for tools that require PNG. Convert several at once, all inside your browser.
Drop images here, or browse
Convert one or many at once to PNG · processed in your browser, never uploaded
Runs entirely in your browser — your images are never uploaded to a server.
Quick answer
To convert JPG to PNG, re-encode the image in the PNG format, which stores every pixel without further loss. This tool does it in your browser: drop in JPGs and download PNGs. Note that PNG can't recover detail the JPG already discarded — it simply prevents any further quality loss when you keep editing.
Formula & method
The tool decodes each JPG, draws it onto an HTML canvas, and exports the canvas as PNG. PNG is a lossless format, so from this point on the pixels are preserved exactly through repeated saves. The file is usually larger than the JPG because lossless storage keeps all the data the JPG had compressed away.
Examples
- Input
- Photo.jpg → Photo.png
- Result
- Lossless working copy
- Why
- Editing and re-saving JPG repeatedly degrades it; converting to PNG first stops further generation loss.
- Input
- JPG upload rejected → PNG accepted
- Result
- Compatible file
- Why
- Some apps, icon sets, and game engines only accept PNG; this gives you one without other software.
- Input
- 8 JPGs converted together
- Result
- 8 PNG files
- Why
- Batch-convert a folder of JPGs in one pass rather than opening each individually.
When to use this tool
- Creating a lossless master before heavy editing so re-saving won't degrade the image.
- Satisfying a website or app that only accepts PNG files.
- Placing a photo into a workflow that later needs added transparency.
Common mistakes
- Expecting PNG to make a blurry JPG sharp — PNG only preserves what's already there; lost detail cannot be restored.
- Converting photos to PNG to save space — for photographs PNG is usually larger than JPG, not smaller.
- Assuming the JPG's compression artifacts disappear — any blocky areas are copied exactly into the PNG.
Frequently asked questions
Does converting JPG to PNG improve the quality?
No. PNG is lossless, so it preserves the JPG exactly as it is — including any existing compression artifacts. It prevents future quality loss but cannot add back detail the JPG already removed.
Why is my PNG bigger than the original JPG?
JPG uses lossy compression tuned for photos, while PNG stores every pixel without loss. For photographic content the lossless PNG is typically several times larger.
Are the files uploaded anywhere?
No. Everything runs locally in your browser on an HTML canvas, so your photos never leave your device.
Can I add transparency after converting?
PNG supports transparency, but converting a JPG doesn't create any — the whole image stays opaque. You'd remove a background in an editor afterward; the PNG container is then ready to hold it.
Can I convert several JPGs at once?
Yes. Select or drop multiple JPGs and they are all converted to PNG together, each with its own download.
Do the dimensions change?
No. The width and height in pixels stay identical; only the file format changes. Use the Image Resizer if you also need to change the size.
Sources & references
External references open in a new tab. We are independent and not affiliated with these organizations.
- ✓ Free to use
- ✓ No sign-up required
- ✓ Runs entirely in your browser — nothing is uploaded.
- ✓ Formula and method shown above
Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.
Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.
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