Image Converter (JPG, PNG, WebP)

How Do You Convert an Image Between JPG, PNG and WebP Online?

A free online image converter changes a picture from one file format to another. This Image Converter handles JPG, PNG and WebP directly in your browser: choose an image, pick the target format, and press Convert Image. It then shows the file sizes, a preview and a download button. Your picture is never uploaded.

What does the Image Converter do and why is it useful?

Different places want different formats. A form may accept only JPG. A designer may need PNG for a logo with a clear background. A website owner may prefer WebP for smaller pages. When your file is in the wrong format, converting is faster than hunting for an editing program.

The tool takes one image at a time and produces a new file in PNG, JPG or WebP. It reports the original and new sizes, shows a preview and offers a download button. It does not change the pixel dimensions, so a 1200 x 800 image remains 1200 x 800. To change dimensions, use the Image Resizer.

What is the difference between JPG, PNG and WebP?

• JPG is a lossy format built for photographs. It makes small files but has no transparency, and repeated saving lowers quality.
• PNG is lossless, so every pixel is kept exactly. It supports transparency and suits logos, screenshots and graphics with sharp edges. Photos in PNG are usually large.
• WebP is a modern format that can be lossy or lossless and supports transparency. It often produces smaller files than JPG or PNG, but some older software cannot open it.

How do you decide which format to convert to?

Start from the destination. If a form or platform lists accepted types, follow that list first. If you are free to choose, ask two questions. Does the picture need a clear background? If yes, pick PNG or WebP. Is it a photograph where small size matters? If yes, pick JPG or WebP. A screenshot full of text and thin lines usually looks cleanest as PNG, while a holiday photo is far lighter as JPG.

Compatibility is the second question. JPG and PNG open almost everywhere, including old email programs and office software. WebP is widely supported by current browsers, but an older image viewer or editor may refuse it. When in doubt, convert to JPG or PNG for sharing with other people, and keep WebP for pages you control.

Finally, remember that conversion is not enhancement. The output can only contain what the input already had. A blurry JPG converted to PNG is still blurry, just stored without further loss. If the file also needs to be lighter, convert first and then run it through the compressor, or resize it before converting.

How does the converter work under the hood?

The page reads your file, draws it onto a canvas at its original width and height, and asks the browser to export that canvas in the format you chose. No server takes part.

• When the target is JPG, transparent areas are filled with white, because JPG cannot store transparency.
• For the lossy formats, JPG and WebP, the quality is fixed at 92 percent. It is not adjustable here. For smaller files, use the Image Compressor.
• PNG output is lossless, so no quality setting applies.
• If the picture is animated, only the first frame is kept.
• If your browser cannot create the format you asked for, the tool says so instead of giving a wrong file.

How do you use the Image Converter step by step?

1. Click the file picker and choose an image.
2. Select the output format: PNG, JPG or WebP.
3. Press the Convert Image button.
4. Look at the original and new file sizes and at the preview.
5. Press the download button to save the converted file.

Results appear only after pressing the button. If you change the format afterwards, press Convert Image again.

What do conversion examples look like?

File sizes below are illustrative, to show how to read the numbers. Real files vary with the picture.

Example 1: PNG photo to JPG

A photo saved as PNG is 3200 KB. After conversion to JPG at 92 percent quality, it is 410 KB. The saving is (3200 - 410) / 3200 = 87.2 percent. Photos shrink strongly because PNG stores every pixel exactly.

Example 2: JPG to WebP

A JPG of 380 KB becomes a WebP of 290 KB. The saving is (380 - 290) / 380 = 23.7 percent. WebP often does better than JPG, though the amount depends on the image.

Example 3: a small logo from JPG to PNG

A 95 KB JPG logo becomes a 140 KB PNG. That is 47.4 percent larger, since (140 - 95) / 95 = 0.474. Converting to a lossless format cannot bring back detail already lost in the JPG, and it often increases the size. Convert this way only when you need the format, not to improve quality.

Example 4: transparent PNG to JPG

A logo with a clear background is converted to JPG. The clear areas become white. On a white page this looks identical, but on a dark or coloured page a white box appears around the logo. Choose PNG or WebP instead to keep the clear background.

Example 5: dimensions stay the same

An 800 x 600 image holds 480,000 pixels. Stored uncompressed with three colour channels, that is 800 x 600 x 3 = 1,440,000 bytes, and with a fourth transparency channel 800 x 600 x 4 = 1,920,000 bytes. Formats exist to store this data more compactly. After conversion the picture is still 800 x 600, only the storage method changes.

Example 6: an animated image

An animated WebP with 30 frames is converted to PNG. The output contains only the first frame, so the result is a still picture.

What tips give the best results?

• Use JPG for photos that must be small and need no transparency.
• Use PNG for logos, icons, screenshots and anything with sharp text or a clear background.
• Try WebP for web pages, then check that your audience and software can open it.
• Convert from the best original you have. Converting a low quality JPG to PNG does not restore quality.
• Avoid converting back and forth between lossy formats, since each pass can lower quality.
• If a site rejects your file, check which formats it accepts before converting.

What are the common mistakes?

• Choosing JPG for a transparent image. The transparency becomes white.
• Expecting PNG to improve a JPG. It only stores the existing pixels without loss.
• Converting a photo to PNG and being surprised by the size. Lossless photos are large.
• Expecting an animation to survive. Only the first frame is kept.
• Looking for a quality slider. The quality is fixed at 92 percent for lossy formats.

Who uses an image converter?

• Applicants whose forms accept only JPG or PNG.
• Web owners moving pictures to WebP for lighter pages.
• Designers who need a PNG with transparency.
• People who received a WebP they cannot open in older software.
• Students and office workers preparing images for documents.

If the next step is a document, the Images to PDF Converter may help, and the Image to Base64 Converter turns a small picture into text for use in code. Find more among our free tools.

Is the Image Converter private?

Yes. The conversion runs entirely in your browser. The image is not uploaded, not stored and not sent to any server. No account is needed and the tool keeps no history.

What are the limitations?

• Only PNG, JPG and WebP are available as targets.
• Quality for JPG and WebP is fixed at 92 percent.
• JPG output replaces transparency with white.
• Animated images keep only the first frame.
• Some browsers cannot create certain formats. The tool tells you when that happens.
• One image at a time, with no batch mode and no drag and drop.
• Nothing updates until you press the button.

Frequently asked questions

Which formats can I convert to?

PNG, JPG and WebP.

Can I choose the quality?

No. JPG and WebP use a fixed quality of 92 percent. PNG is lossless.

What happens to a transparent background?

It stays transparent in PNG and WebP, and turns white in JPG.

Why is my PNG larger than the original JPG?

PNG is lossless and stores every pixel exactly, so photographic content often takes more space.

What about animated images?

Only the first frame is kept.

What if my browser cannot make a format?

The tool shows a message saying so. Try another format or another browser.

Does conversion change the size in pixels?

No. The width and height stay the same.

Is my image uploaded?

No. Everything happens in your browser.

The right format in one press

Pick the format your destination wants, press Convert Image, and download the result. Keep the original, and the conversion costs nothing but a few seconds.