🖼️ JPG to PNG Converter, Free and Private in Your Browser
By Shihab Mia · Updated 2026-08-03
Pick a .jpg or .jpeg file. It stays on your device and is never uploaded.
PNG is lossless, so there is no quality slider here. The PNG output will usually be a larger file than the source JPG because PNG does not use lossy compression.
Choose a JPG image to get started.
This tool converts a JPG or JPEG image into a PNG file instantly in your browser, with nothing ever uploaded to a server. Pick a JPG, click convert, and download a PNG version of the same picture in seconds. It is useful whenever a website, app or document requires PNG specifically, or when you want to add transparency to an image later using an editor that only writes transparent pixels onto a PNG canvas. Because the whole process runs on your own device, there is no wait for an upload, no file size limit imposed by a server, and no copy of your image ever leaves your computer.
What is the JPG to PNG Converter?
JPG (also written JPEG) is a lossy, compressed image format built for photographs. It throws away some visual detail every time it is saved, in exchange for much smaller file sizes, and it has no support for transparency, every pixel is fully opaque. PNG is a lossless, compressed format built for screenshots, graphics, logos, and any image where crisp edges or transparency matter. PNG saves every pixel exactly as it is, which is why PNG files are usually larger than a JPG of the same picture, but nothing is lost or blurred in the process.
Converting JPG to PNG does not add any missing detail back into the picture. A JPG has already discarded some information the moment it was originally saved as JPG, and no converter can recover that. What this tool does is decode the JPG's existing pixels and re-encode them losslessly as PNG, so from that point forward the file will not lose any further quality no matter how many times it is re-saved. This matters if you plan to edit the image repeatedly, since PNG will not compound quality loss the way re-saving as JPG again and again would.
Technically, this converter loads your chosen JPG file into the browser using an object URL and decodes it with the browser's native image decoder. The decoded image is drawn onto an HTML canvas element at its original pixel dimensions, and the canvas is then exported as a PNG using the browser's built-in canvas.toDataURL image encoder. Every step, decoding, drawing, and encoding, happens locally using standard Web APIs already built into Chrome, Edge, Firefox and Safari, so your file is never sent anywhere.
Because a source JPG has no transparency, converting it does not create any transparent pixels either, the output PNG will look identical to the JPG, just stored in a different, lossless file format. Decode support is generally solid across modern browsers since JPG is one of the oldest and most universally supported image formats on the web, but a corrupted file or an unusual JPEG variant can occasionally fail to decode, in which case the tool tells you plainly rather than producing a broken image.
One practical side effect is worth knowing: converting through a canvas strips all metadata. A JPG straight out of a phone or camera often carries EXIF data, camera model, capture date, exposure settings, and sometimes GPS coordinates. None of that survives the trip through the canvas, because a canvas only stores pixel color values, not metadata blocks. For many people this is a welcome privacy side effect, since a PNG shared afterward will not leak a location tag, but it does mean you should not rely on this tool if you specifically need the EXIF data preserved for cataloging or copyright purposes.
It is also worth being clear about what this tool is not for. If your goal is to save on file size or bandwidth, converting a photo from JPG to PNG works against you, since PNG's lossless approach means photographic images typically end up two to four times the size of the original JPG. PNG earns its keep on screenshots, logos, illustrations, and any image with flat colors, sharp text, or transparency, not on ordinary photographs. Use this converter when a specific requirement calls for PNG, not as a general way to make an image look better or load faster.
When to use it
- Preparing an image for a website, CMS or template that only accepts PNG uploads.
- Converting a photo before editing it in a tool that needs a PNG canvas to add transparency or overlays.
- Getting a lossless copy of a JPG before repeated re-editing, so future saves do not add more compression artifacts.
- Meeting a PNG requirement for a logo, icon, app icon set, document upload form or print specification.
- Sharing an image with a recipient or system that specifically requests PNG rather than JPG.
- Stripping EXIF and GPS metadata from a phone photo before sharing it, since the canvas-based conversion drops that data automatically.
How to use the JPG to PNG Converter
- Click the file field and choose a .jpg or .jpeg image from your device.
- Wait for the note to confirm the image loaded, showing its pixel dimensions and file size.
- Click Convert to PNG to decode and re-encode the image losslessly.
- Check the preview to confirm it looks right.
- Click Download PNG to save the converted file to your device.
Formula & method
Worked examples
You have a 1600x1200px vacation photo saved as photo.jpg, about 850 KB, and need a PNG for a design tool.
- Choose photo.jpg in the file field; the tool reports it loaded at 1600x1200px, 850 KB.
- Click Convert to PNG.
- The browser decodes the JPG pixels and draws them onto a 1600x1200 canvas.
- The canvas is exported with toDataURL("image/png"), producing a lossless PNG, likely 2 to 4 MB since PNG does not compress photographic detail as tightly as JPG.
- Click Download PNG to save photo.png.
Result: A lossless PNG at the same 1600x1200px dimensions as the source JPG, larger in file size but visually identical.
You have a small 400x400px product thumbnail saved as thumb.jpeg and a form only accepts PNG uploads.
- Choose thumb.jpeg; the tool confirms it loaded at 400x400px.
- Click Convert to PNG.
- The image is drawn to a 400x400 canvas and exported as PNG.
- The preview shows the converted image looking identical to the original.
- Click Download PNG and upload thumb.png to the form.
Result: A PNG file at 400x400px that satisfies a PNG-only upload requirement, with no visible change to the image.
You have a phone photo, IMG_0421.jpg, 3024x4032px, 4.2 MB, taken in portrait orientation with EXIF rotation and GPS data attached.
- Choose IMG_0421.jpg; the tool reports it loaded at 3024x4032px, matching the portrait orientation shown on your phone since modern browsers auto-apply the EXIF rotation tag when decoding.
- Click Convert to PNG.
- The browser draws the already-correctly-oriented pixels onto a 3024x4032 canvas; no EXIF or GPS metadata is carried into the canvas, since a canvas stores only pixel color values.
- The canvas is exported as a PNG, likely 8 to 12 MB given the high photographic detail.
- Click Download PNG to save IMG_0421.png.
Result: A correctly oriented PNG at 3024x4032px with the camera model, capture date and GPS location stripped out, useful when you want to share the photo without the location metadata.
JPG vs PNG, key format properties
| Property | JPG / JPEG | PNG |
|---|---|---|
| Compression type | Lossy | Lossless |
| Transparency support | No | Yes (alpha channel) |
| Best suited for | Photographs, photos with gradients | Screenshots, logos, graphics, text |
| Typical file size for a photo | Smaller | Larger |
| Quality loss on repeated re-save | Yes, compounds each save | No, pixels preserved exactly |
What this converter does and does not change
| Aspect | Result after conversion |
|---|---|
| Pixel dimensions | Unchanged, same width and height as the source JPG |
| Existing JPG compression artifacts | Preserved as-is, PNG cannot remove detail already lost |
| Transparency | None added, a JPG source has no alpha channel to carry over |
| EXIF metadata (camera, date, GPS) | Removed, canvas export keeps pixel data only |
| File size | Usually larger than the source JPG |
When to pick PNG vs when to keep JPG
| Situation | Better format |
|---|---|
| Photo for social media or a blog post | JPG, smaller and visually indistinguishable at normal viewing sizes |
| Logo, icon or graphic with flat colors | PNG, sharp edges and optional transparency |
| Screenshot containing text | PNG, avoids the soft blurring JPG adds around text edges |
| Image that needs a transparent background | PNG, JPG cannot store transparency at all |
| Large photo archive where storage space matters | JPG, PNG files can be several times larger |
Common mistakes to avoid
- Expecting PNG to restore quality lost in the original JPG. If the source JPG already has compression artifacts from being saved as JPG, converting it to PNG locks in those artifacts losslessly, it does not remove or repair them. Only a higher-quality original can fix that.
- Assuming the PNG will be a smaller file. PNG is lossless, so it generally produces a larger file than a JPG of the same photo, especially for images with lots of color detail like photographs. This is expected, not a bug.
- Expecting transparency to appear after conversion. A JPG file has no transparent pixels to begin with, since JPG does not support an alpha channel. Converting to PNG does not create transparency, it just changes the file format; you would need to manually erase or mask areas in an image editor afterward.
- Uploading a file that is not actually a JPG. A file renamed to end in .jpg without actually being JPG-encoded data will fail to decode. This tool checks the file type and shows a clear message if the browser cannot decode it, rather than producing a broken PNG.
- Expecting EXIF metadata to carry over. Camera model, capture date and GPS location stored in a JPG do not survive conversion, since the canvas that produces the PNG only holds pixel color values, not metadata blocks. This is usually a privacy benefit, not a defect.
- Assuming this tool can batch-convert many files at once. This converter processes one JPG at a time entirely in your browser. If you need to convert dozens of files, repeat the choose, convert and download steps for each one.
Glossary
- JPG / JPEG
- A lossy, compressed image format designed for photographs, widely supported but with no transparency support.
- PNG
- A lossless, compressed image format that preserves every pixel exactly and supports transparency via an alpha channel.
- Lossy compression
- A compression method that discards some data permanently to shrink file size, as JPG does.
- Lossless compression
- A compression method that shrinks file size without discarding any data, as PNG does.
- Alpha channel
- The extra data channel in a PNG that stores transparency information per pixel, allowing partly or fully see-through areas.
- Canvas
- An HTML element that lets a web page draw and read pixel data using JavaScript, used here to decode and re-encode the image entirely in the browser.
- EXIF data
- Metadata embedded in a JPG file, such as camera model, capture date and sometimes GPS location, which is not preserved when the image is decoded and re-encoded through a canvas.
- Raster image
- An image made of a fixed grid of pixels rather than mathematical shapes; both JPG and PNG are raster formats, unlike vector formats such as SVG.
Frequently asked questions
Does converting JPG to PNG improve image quality?
No. PNG is lossless from this point forward, but it cannot restore detail that the JPG format already discarded when the original file was saved. The converted PNG looks the same as the JPG, just stored without further compression loss.
Why is my PNG file bigger than the original JPG?
This is normal and expected. PNG uses lossless compression, which keeps every pixel exactly, so photographic images typically end up as larger PNG files than the equivalent lossy JPG.
Will the converted PNG have transparency?
No. A JPG file has no transparency data to begin with, so the resulting PNG is fully opaque, identical in appearance to the source JPG. You would need to add transparency manually in an image editor afterward.
Is my image uploaded to a server during conversion?
No. The entire conversion happens in your browser using the canvas API. Your JPG file is never sent over the network, which keeps the process private and works even without much of an internet connection.
What image dimensions will the PNG have?
The PNG keeps the exact same pixel width and height as the source JPG. This tool does not resize, crop or otherwise alter the dimensions during conversion.
Why did my JPG fail to convert?
This usually means the file is corrupted, not actually JPEG-encoded despite its name or extension, or uses an unusual variant your browser cannot decode. Try re-saving the original as a standard JPG and uploading it again.
Can I convert several JPG files to PNG at once?
Not with this tool, it converts one image at a time entirely in your browser. For each additional JPG, repeat the choose, convert and download steps.
Does converting to PNG remove EXIF or GPS metadata from my photo?
Yes. Because the conversion redraws the image onto an HTML canvas and re-encodes only the pixel data, camera details, capture date and GPS location tags stored in the original JPG are not carried into the PNG.
Can I convert a PNG back to JPG later?
Yes, but converting PNG to JPG applies lossy compression again, so use a dedicated PNG to JPG converter and expect a small amount of quality loss if you round-trip the file more than once.
Does this JPG to PNG converter work on mobile phones?
Yes. It runs in any modern mobile browser on iOS or Android using the same canvas-based decoding and encoding as on desktop, though very large photos may take a moment longer to process on older phones.