Free Image Format Converter

The Image Format Converter is a free online tool that convert images between jpg, png, webp, bmp, and gif formats in your browser. It runs entirely in your browser with no installation or sign-up needed.

For JPG and WebP outputs, you can set the quality (0-100%) to control compression.

PNG to PNG is lossless. Converting to JPG or WebP applies lossy compression.

Yes, completely free.

Absolutely. The Image Format Converter processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Image Format Converter is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Image Format Converter in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Image Format Converter works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

Pick based on what the image contains and where it will be used. JPG is best for photographs and complex scenes where small file size matters more than perfect detail, but it cannot hold a transparent background. PNG is lossless and transparency-aware, making it the right choice for logos, icons, screenshots, and anything with sharp edges or text. WebP is the modern all-rounder: it usually produces smaller files than both JPG and PNG at similar visual quality and supports transparency, so it is excellent for cutting page weight on the web. As a rule of thumb, use WebP first for sites, PNG when you need crisp edges or transparency, and JPG for plain photos headed to older systems. Upload your image above, select the target format, and compare the resulting file size before you download.

JPG (and BMP) have no concept of transparency, so any transparent pixels in a PNG, WebP, or GIF have to be replaced with a solid color when you convert. This tool fills those areas with white before encoding, which is why a transparent logo suddenly sits on a white rectangle after a JPG conversion. There is no way to keep transparency inside a JPG file itself; the format simply does not store an alpha channel. If you need the see-through background preserved, convert to PNG or WebP instead, both of which keep the alpha channel intact. So if your output shows an unexpected white box, switch the target format to PNG or WebP and re-convert. You can change the format and run the conversion again on the same image to see the difference instantly.

No. Converting a JPG to PNG cannot recover detail that JPG compression already discarded. JPG is a lossy format, so the moment an image is saved as JPG, fine detail is permanently thrown away. Re-encoding that same picture as PNG simply stores the already-degraded pixels in a lossless container; it locks in the current quality but adds nothing back. You will usually end up with a noticeably larger file that looks identical to the JPG you started with. PNG is worthwhile when you need transparency, a lossless master to edit further, or crisp text and line art, not as a way to upgrade a compressed photo. To see this for yourself, convert a JPG to PNG above and compare the before-and-after file sizes shown in the results.

It happens because of how each format stores pixels. PNG uses lossless compression and BMP uses none at all, so converting a heavily compressed JPG into either one means the small, lossy file is re-expanded into a much bigger lossless or raw file. The image looks the same, but the byte count climbs, sometimes dramatically with BMP, which records every pixel uncompressed. This is normal and expected, not a bug. If your goal is a smaller file rather than a lossless one, convert to WebP or JPG instead and lower the quality slider to trade a little detail for a big size reduction. After each conversion this tool shows the original size, the new size, and the percentage change, marking increases in orange, so you can immediately tell whether a format swap helped or hurt.

The quality slider controls how aggressively the encoder compresses the image, and it only appears for JPG and WebP because they are the lossy output formats; PNG and BMP have no slider since they are not lossy. Lower values discard more visual detail to shrink the file, while higher values keep the picture closer to the original at the cost of size. Pushing it too low introduces visible blocky artifacts and fuzzy edges, especially around text and fine lines. Around 80 to 90 percent is a sensible default for web photos: the result looks nearly identical to the source while the file is substantially smaller. Because PNG and BMP store data losslessly, changing quality does not apply to them. Adjust the slider, re-convert the same image, and watch the converted file size update so you can settle on the smallest size that still looks clean.