Why convert JPG to PNG instead of just editing the JPG directly?

Every time a JPEG is opened, edited, and re-saved as a JPEG, its lossy compression is applied again, gradually degrading quality. Converting to PNG first means any subsequent edits and re-saves stay lossless — you edit the PNG copy without compounding compression artifacts on top of what the original JPEG already introduced.

Will the file size increase after converting?

Usually yes, often substantially — PNG's lossless compression cannot match JPEG's aggressive size reduction for photographic images with smooth gradients and lots of color variation. Flat-color graphics, screenshots, and logos compress much more efficiently as PNG and may end up a similar size or even smaller.

Does converting to PNG add transparency to my photo?

No. JPEG has no transparency channel at all, so the source image is fully opaque, and the converted PNG starts fully opaque too. What conversion does is put the image into a format that supports transparency, so a background-removal tool or image editor can add it afterward — something you could never do starting from a JPEG.

Can I batch convert a whole folder of JPGs at once?

Yes. Drop or select as many JPEG files as you like in one go; each is converted individually and all the resulting PNGs download together in a single ZIP archive.

Is there a maximum file size or image resolution?

There's no hard resolution cap, but very large images (very high-megapixel photos, 50 MB and up) take noticeably longer to decode and re-encode since everything runs on your device's own processing power rather than a server.

Will text and sharp edges look better in the PNG?

Yes, generally. JPEG compression introduces visible "ringing" artifacts around hard edges and small text at typical quality settings. Since PNG doesn't discard any pixel data, those artifacts already present in the source JPEG stay exactly as they were, but no new artifacts are introduced during the conversion itself.

Are my photos uploaded anywhere during conversion?

No. Decoding and re-encoding both happen locally in your browser using the Canvas API. Nothing is sent to a server, which matters if the images contain personal documents, medical photos, or anything else you'd rather keep off third-party infrastructure.

Does this work the same on a phone browser as on desktop?

Yes — Canvas API image decoding and encoding is a standard browser feature supported on iOS Safari, Android Chrome, and every modern desktop browser, so the conversion works identically on mobile.

Should I use PNG or WebP for a converted image?

PNG is the safer, universally compatible choice when you need guaranteed lossless quality or plan to add transparency. WebP can also be lossless but typically produces smaller files — worth considering if the destination (a website, an app) supports WebP and file size matters more than universal compatibility.

All ToolsJPG to PNG

JPG to PNG

Convert JPG images to lossless PNG format instantly in your browser. No upload, no registration — 100% private.

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JPG to PNG

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JPGPNG PNGJPG WebPJPG JPGWebP SVGPNG JPGJPG ↓PNGPNG ↓

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What is JPG to PNG?

JPG to PNG re-encodes your JPEG photos as PNG files using a lossless compression scheme, meaning every pixel value in the decoded image is preserved exactly rather than approximated the way JPEG's compression algorithm does. JPEG achieves its small file sizes by discarding information the human eye is less sensitive to — subtle color gradients get simplified, and sharp edges (text, logos, hard lines) develop a faint blocky "ringing" around them at higher compression levels. That trade-off is fine for a photo of a sunset; it's a real problem for a screenshot full of text, a logo with crisp edges, or any image you plan to edit further, since JPEG artifacts compound with every re-save. PNG uses DEFLATE compression instead, which is completely lossless — it can't shrink a photo as aggressively as JPEG can, but it never throws away pixel data to get there.

The format also matters for what happens next to the image. PNG supports an alpha (transparency) channel, which JPEG has no mechanism for at all. Design tools, background-removal tools, and anything that composites an image over other content generally expect PNG input for exactly this reason. Converting a JPEG to PNG doesn't retroactively add transparency — a JPEG never had any to begin with, so the output starts fully opaque — but it does put the file into the correct container format so a background-removal step, layering in a design tool, or export from an editor can add and preserve transparency afterward, which a JPEG output could never hold onto.

This conversion runs in the reverse direction most people expect: PNG to JPG is the common move for shrinking file size before uploading a photo somewhere, while JPG to PNG serves a narrower but specific need — feeding a photographic image into a workflow (editing, compositing, print production, icon creation) that assumes or requires a lossless, alpha-capable format at the input stage.

How It Works

Select or drop your JPG files. Each one is decoded using the browser's Canvas API — the same rendering engine that displays images on any webpage — and the resulting pixel grid is re-encoded as a PNG using lossless DEFLATE compression, entirely on your device with nothing uploaded anywhere. A single image downloads directly; converting several at once bundles all the resulting PNG files into one ZIP archive so you don't have to save each one individually.

How to Use

1
Upload JPG images
Drop one or more JPEG files onto the upload area. Processing happens entirely in your browser.
2
Convert
Click "Convert to PNG". Each JPEG is decoded and re-encoded as a lossless PNG file.
3
Download
Multiple converted images download as a ZIP. Single images download directly.
4
Use transparency if needed
The PNG format supports transparency. Use an image editor to remove the white background after conversion if needed.
5
Compress if large
PNG files are larger than JPGs. Use the Compress PNG tool to reduce their size after conversion.

Who Uses This Tool

🎨

Graphic Design

Convert photos to PNG to edit them in design tools that require lossless input or need to add transparent elements.

🌐

Web Development

Convert JPG screenshots or UI mockups to PNG for use in HTML/CSS with pixel-perfect sharpness.

📱

App Icons & Assets

Convert JPG images to PNG to use as app icons, which typically require lossless PNG format.

🖨️

Print & Publishing

PNG is preferred in print workflows — convert JPGs to PNG before placing images in InDesign or Publisher.

✂️

Background Removal

Convert to PNG first, then use a background remover tool — only PNG supports the transparent backgrounds needed for cutouts.

📋

Presentation Graphics

Use PNG images in PowerPoint or Google Slides to avoid visible compression artifacts around text and edges.

Why Choose This Tool

Lossless Output

PNG stores every pixel perfectly — no compression artifacts, no quality loss from the conversion.

Transparency Support

The PNG format supports alpha channel transparency — the natural next step before background removal or compositing.

Batch Conversion

Convert multiple JPG files to PNG at once — all results packaged in a ZIP for easy download.

100% Private — No Uploads

All conversion happens in your browser using HTML Canvas. Your images never leave your device.

Instant — No Configuration

Drop your JPG files and the PNG versions are ready to download immediately.

Free — No Account Needed

No registration, subscription, or per-image credits. Convert as many files as you need.

Also Try

PNG to JPG Compress JPG Compress PNG JPG to WebP Image Converter Resize Image

Key Benefits

100% browser-based — images never leave your device
Lossless PNG output — every pixel preserved, no compression artifacts
Batch convert multiple JPGs at once, downloaded as one ZIP
Correct format for background removal and design-tool workflows
No repeated JPEG re-compression when the image needs further edits
Free up to 40 MB — sign up free for 80 MB, upgrade to Pro for 250 MB

Frequently Asked Questions

Also Known As

jpg to png converterjpeg to pngconvert jpg to png freejpg to png onlinechange jpeg to pngjpg to transparent pnglossless jpg to pngbatch jpg to png converter

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