JPG to PNG Online Converter
Description
- 100% in-browser Canvas conversion
- Lossless PNG output
Related Tools
JPG to PNG Converter – Free, Lossless Output, No Upload
Turn JPG and JPEG photos and graphics into lossless PNG files in your browser. Select a single file or a batch; conversion runs locally, so images are never uploaded and nothing needs installing.
PNG is the right format when edges must stay crisp or you may edit the image again. It is lossless and supports transparency, which JPG cannot. Compare the formats at WebP vs JPG vs PNG.
Key features
- Convert JPG/JPEG to lossless PNG in one click, one file or a batch
- Crisp edges, text and logos stay sharp instead of JPEG-blurred
- Original pixel dimensions are preserved, no resampling
- Fully local conversion — files stay on your device
- No signup, no watermark; batches download as a single ZIP
How to use
- Drag JPG files onto the drop zone or click to choose them.
- Each file is converted to PNG locally and reports its new size.
- Download PNGs individually or grab the batch as a ZIP.
Why PNG is lossless — and why that can mean bigger files
PNG stores image data losslessly with DEFLATE compression. Nothing is discarded on save, so repeated editing does not accumulate the blur and ringing that JPEG compression leaves behind. It also carries an alpha channel, which is why logos, icons, screenshots and line art are almost always PNG.
The downside is size. PNG is excellent on flat, solid-colour graphics but inefficient on photographic detail. A photo converted from JPG to PNG will usually grow substantially in weight, sometimes several times the original.
JPG to PNG: what changes and what does not
- Detail: converting to lossless PNG does not restore detail the JPG already discarded. You start from the pixels you have; JPEG artifacts baked into the source remain visible.
- Size: expect the PNG to be larger, often much larger, for a photograph. For a screenshot, logo or diagram it may shrink.
- Transparency: a JPG cannot store transparency, so the converted PNG is fully opaque. There are no transparent pixels to recover.
- Editing: PNG is the better working master; save copies as JPG only when you need a small shareable file.
How this page performs the conversion
There is no picker or slider because the output is fixed to PNG. Each JPG is drawn onto a canvas at its natural size and exported as a lossless PNG; the export quality argument is ignored for PNG because the format is inherently lossless.
- Pixel dimensions are kept exactly; the converter never enlarges, shrinks or crops.
- All processing happens in the tab — the JPG files are never transmitted.
- More than one input reveals a one-click “Download all as ZIP”.
- Do not simply rename a .jpg to .png: the bytes would still be JPEG and tools may reject or misread them; real decoding and re-encoding are required.
When JPG to PNG makes sense
Convert to PNG when…
- you are turning a screenshot, logo, chart or diagram into a clean web asset
- you need an editable master you will re-save many times
- a form, design tool or printer demands PNG
- you want crisp text and edges rather than photographic compression
Leave it as JPG when…
- the file is a photograph and you care about size
- the image goes to a website where a smaller JPG or the JPG to WebP route is lighter
- transparency and lossless are irrelevant
Step by step: batch-convert JPGs to PNG
- Gather the JPG files on this computer.
- Drop them onto the page, or click to select multiple files.
- Wait for local conversion; each item shows its PNG size.
- Download individual files or “Download all as ZIP”.
- If a PNG breaches an upload cap, shrink it with the image compressor.
Related conversions and guides
- WebP vs JPG vs PNG — which format suits photos, graphics and transparency
- JPG to WebP converter — the smaller route for photographic web images
- WebP to PNG converter — lossless output from WebP sources
- Image compressor — shrink a bulky PNG for uploads
Frequently Asked Questions
Can I convert JPG to PNG without losing quality?
Yes. PNG is lossless, so converting JPG to PNG keeps every pixel exactly. The file will grow in size because PNG compresses photographic data less efficiently than JPG. The trade-off is quality versus file size.
Will the PNG support transparency?
No. JPG does not store transparency, so a JPG to PNG conversion starts with a fully opaque image. If you need a transparent background, remove the background after conversion. Otherwise your PNG will just be a rectangle with no alpha channel.
Why is my PNG file larger than the JPG?
JPG uses lossy compression and is highly optimised for photographs. PNG uses lossless compression, which is much larger for complex images with gradients, noise and fine detail. PNG is only smaller than JPG for flat graphics, logos and screenshots with large solid colour areas.
Can I batch convert JPG to PNG?
Yes. Select multiple JPG files in the upload zone and convert them all to PNG at once. The batch processor works in the browser and produces one PNG per input image.
Does converting JPG to PNG reduce image quality?
No. Since PNG is lossless, there is no quality loss during conversion. The original JPG pixels are preserved exactly. The only change is the file format and the resulting file size.
What is the best way to convert JPG to PNG for free?
Use a free online converter like PixlReady. Upload your JPG, choose PNG as the output, and download. It runs in the browser with no upload to a server and no quality loss.
When should I use PNG instead of JPG?
Use PNG when you need transparency, crisp text or graphics with sharp edges, or when you want lossless editing. Use JPG for photographs and when file size matters more than pixel-perfect quality.
Does this converter work on a phone or tablet?
Yes. PixlReady runs in any modern mobile browser, so you can convert JPG to PNG on iPhone, Android, iPad or any tablet without installing an app.
Can a JPG to PNG conversion recover transparency that was never there?
No. Once a photo is saved as JPG, any transparent areas have already been flattened onto a background colour. Converting the file to PNG cannot bring that transparency back — you would need to cut the subject out afterwards.
What is the maximum file size I can convert?
The browser-based converter handles typical camera and phone JPGs within the standard upload limit. Very large originals are read locally, but extremely high-resolution files may take longer to process on older devices.
Related converters
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- JPG to WebP
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- PNG to WebP
- WebP to PNG
- HEIC to PNG
- GIF to JPG