Change a picture from one format to another, right in your browser. When you need an image converter to JPG for a form that rejects PNG, a PNG for a transparent logo, or a WebP to make a web page lighter, this tool re-encodes the file on your own device. Nothing is uploaded, there is no sign-up and no watermark, and the result keeps the original pixel dimensions.
No image chosen yet. PNG, JPEG, WebP, GIF and BMP files all work as input.
90%
Conversion is local: your image never leaves this device. Animated GIFs and BMP files are flattened to a single still image (the first frame of a GIF), because the target formats here are still-image formats.
How to Use This Image Format Converter
- Choose your image. Pick any PNG, JPEG, WebP, GIF or BMP file. The tool reads it locally and shows its name, format, pixel dimensions and file size so you can confirm you grabbed the right one.
- Pick the target format. JPEG is the safe choice for photos and upload forms, PNG keeps transparency and sharp edges, and WebP usually gives the smallest file for websites.
- Set the quality. The slider applies to JPEG and WebP only. Ninety percent is a good default: visually clean with a much smaller file. Drop toward 70 for thumbnails and email, and keep 95 or above for images you plan to edit further.
- Press Convert. The result line reports the new format, dimensions and size, plus how much smaller or larger it is than the original, so you know the trade you made before saving anything.
- Download. The converted file keeps the original name with the new extension, so photo.png becomes photo.jpg. Your original file is never changed.
PNG, JPG and WebP: What Is the Difference?
All three formats store the same pixels, but they compress them in very different ways, and that decides which jobs each one is good at.
JPEG (often shortened to JPG in filenames) is the classic photo format. It uses lossy compression: it discards fine detail your eyes are unlikely to miss, which is why a camera photo shrinks from tens of megabytes to a few hundred kilobytes. Every device, program and website accepts it. Its weaknesses are real, though: it has no transparency, and sharp edges like text and logos tend to grow fuzzy halos.
PNG is lossless, meaning the file stores enough information to rebuild every pixel exactly. That makes it the right home for screenshots, diagrams, logos and anything with text or transparency. The price is size: a photograph saved as PNG can be five to ten times larger than the same photo as JPEG, because photos are exactly the kind of content lossless compression handles worst.
WebP is the modern middle ground, built for the web. It offers lossy and lossless modes, supports transparency, and at the same visual quality its files are typically 25 to 35 percent smaller than JPEG. Every current browser displays WebP, which is why so many websites serve it, but some older desktop programs, printers and upload forms still refuse it, which is exactly when a converter earns its keep.
| Property | JPEG | PNG | WebP |
|---|---|---|---|
| Compression | Lossy | Lossless | Lossy or lossless |
| Transparency | No | Yes | Yes |
| Best for | Photos, upload forms | Logos, screenshots, text | Web pages, smaller photo files |
| Typical photo size | Small | Very large | Smallest |
| Opens everywhere | Yes | Yes | Modern browsers yes, older apps no |
How Conversion Works: Pixels, Transparency and Quality
Converting a format is a decode-and-re-encode job. Your browser first decodes the source file into raw pixels in memory, drawn at the image’s natural size onto a canvas. It then encodes those same pixels in the target format. The dimensions never change; only the storage method does, which is why the info line and the result line always show the same width and height.
Transparency is the one place where the target format changes what you see. JPEG has no alpha channel, so a transparent pixel has to become something solid. This tool paints a white background before drawing the image when the target is JPEG, the same choice most converters make, because logos and product shots are usually destined for white pages and documents. Converting to PNG or WebP keeps transparency intact.
The quality slider controls how hard the lossy encoders squeeze. It is a percentage of retained detail, not a percentage of size: quality 90 and quality 80 can look identical on a phone screen while differing noticeably in kilobytes. PNG ignores the slider entirely, because lossless encoding has no quality dial to turn.
Worked Examples
| Conversion | Typical result | Why it helps |
|---|---|---|
| Camera photo, PNG 6.2 MB to JPEG at 90% | About 700 to 900 KB, no visible change | Fits email and form upload limits that reject big PNGs |
| Website hero image, JPEG 480 KB to WebP at 90% | About 300 to 340 KB | Faster page loads with the same dimensions and look |
| Downloaded WebP sticker to PNG | Larger file, transparency preserved | The image can now be edited or printed in programs that refuse WebP |
| Logo with transparency, PNG to JPEG | Much smaller file on a white background | Right choice for documents and slides with white pages |
Sizes vary with image content: a busy photo compresses less than a flat graphic, and heavy detail always costs bytes. That is why the tool shows you the before-and-after figures for your own file instead of promising a fixed saving.
Which Format Should You Choose?
- A website or form demands JPG. Many upload systems accept only JPEG. Convert to JPEG at quality 90 and you keep the look while satisfying the form, which is the single most common reason people search for a jpeg image converter.
- You downloaded a WebP and your app will not open it. Convert WebP to PNG when you need every pixel and any transparency preserved, for example before editing. Convert it to JPEG instead when you just need to view, print or share it anywhere.
- Your page loads slowly. Convert JPEG or PNG photos to WebP and the same pictures arrive in notably smaller files, as long as your visitors use modern browsers, which nearly all do.
- You are archiving a screenshot or diagram. Keep or choose PNG. Lossless storage means text stays crisp no matter how many times the file is copied, and the bigger size is a fair price for a small graphic.
Common Mistakes to Avoid
- Converting JPEG to PNG to improve quality. It cannot add detail that JPEG already discarded. The PNG will be pixel-identical to the JPEG and several times larger. Convert to PNG for editing safety or transparency work, not for a quality boost.
- Re-saving a JPEG again and again. Every lossy save discards a little more. Keep a PNG master copy of images you edit repeatedly, and export JPEGs from it.
- Forgetting the white background. A transparent logo converted to JPEG gains a white box. On a white page that is invisible; on a colored slide it is obvious. Choose PNG or WebP when the background must stay transparent.
- Expecting GIF animation to survive. JPEG, PNG and WebP as produced here are still images, so an animated GIF is flattened to its first frame. Use a GIF tool when the animation itself is the point.
- Setting quality to 100 out of habit. The jump from 90 to 100 often doubles the file for a difference nobody can see. Match the quality to where the image will actually be viewed.
More Image Tools on This Site
Converting formats often sits next to shaping the image itself. Arrange several pictures on a single page with the Photo Collage Maker, turn a photo into a printable outline with the Image to Stencil Converter, or check its print dimensions with the Pixel to Inches Converter. For fun edits, try the Glitch Image Generator, the Low Quality Image Generator or the Animated GIF Generator. Every one of them runs locally in your browser, just like this converter.
Frequently Asked Questions
How do I convert an image to JPG?
Choose your image above, leave the target format on JPEG, set the quality (90 percent suits most photos), and press Convert. Then download the result, which keeps your original filename with a .jpg extension. The whole process happens in your browser and takes a second or two.
Is JPG the same thing as JPEG?
Yes. They are the same format and the same compression. The shorter JPG spelling exists because older Windows systems allowed only three-letter file extensions, so .jpeg was trimmed to .jpg. Nothing about the image data differs, and this tool writes files with the .jpg extension.
Does converting a PNG to JPG reduce quality?
Slightly, by design. JPEG is lossy, so the encoder discards some fine detail in exchange for a much smaller file. At quality 90 the change is invisible for photographs in normal viewing. Graphics with sharp text or thin lines lose the most, which is why screenshots and logos are usually better kept as PNG.
How do I convert a WebP image to PNG?
Choose the WebP file, set the target format to PNG, and press Convert. The conversion is lossless, so every pixel and any transparency in the WebP is preserved in the PNG. Expect a larger file, because PNG cannot match WebP compression on photos.
What happens to transparency when I convert to JPG?
JPEG cannot store transparency, so transparent areas are placed on a white background during conversion. If your image needs a transparent background, for example a logo or sticker, convert to PNG or WebP instead, because both of those formats keep the alpha channel.
Is my image uploaded to a server when I convert it?
No. The file is decoded and re-encoded by your own browser using its built-in canvas tools. Nothing is transmitted, stored or logged, so the converter is safe for personal photos, ID scans and work documents, and it works the same on phones, tablets and computers.