Convert Image Online
Convert JPG, PNG, WebP to any format instantly — free, private, 100% in your browser
Drop image here or click to upload
JPG, PNG, WebP, HEIC — max 20MB
You can also paste an image (Ctrl+V)
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What Is Image Format Conversion?
Image format conversion is the process of changing an image from one file type to another — for example, converting a JPG to PNG, a PNG to WebP, or a WebP to JPG. Each image format stores pixel data differently, which affects file size, image quality, and whether features like transparency are supported. Converting between formats lets you choose the best format for your specific use case without re-shooting or re-designing the image.
Our converter works entirely in your browser using the HTML5 Canvas API — no server upload, no waiting, no file size limits imposed by a backend. You can also compress the image afterward to further reduce the file size while keeping the same format.
How to Convert Images Online — 3 Simple Steps
- 1
Upload your image
Click the upload area, drag and drop your file, or paste from clipboard (Ctrl+V). Supported formats: JPG, PNG, WebP — up to 20 MB.
- 2
Choose the output format
Select JPG, PNG, or WebP as the target format. The conversion starts automatically. You can switch formats at any time to compare results without re-uploading.
- 3
Download the converted file
Conversion happens instantly in your browser. Click Download to save the result. The file is named with a “converted-” prefix so you can easily tell it apart from the original.
JPG vs PNG vs WebP — Which Format Should You Use?
The three most common image formats each have a different purpose. Choosing the right one saves file size and preserves quality where it matters most.
| Format | Best for | Transparency | File size |
|---|---|---|---|
| JPG | Photos, social media | ✗ No | Small |
| PNG | Logos, graphics, screenshots | ✓ Yes | Medium–large |
| WebP | Web images, any use case | ✓ Yes | Smallest |
When to Convert to JPG
JPG is the most universally supported image format across all devices, browsers, and platforms. Convert to JPG when you need the smallest possible file size for photos and the image does not require a transparent background. JPG uses lossy compression — meaning it discards some pixel data to achieve smaller sizes — but at quality settings of 80 or above, the quality loss is invisible to the human eye.
Common use cases for converting to JPG: uploading photos to social media (Instagram, Facebook, Twitter), sending images by email, submitting photos to websites that require JPG specifically, or reducing the file size of PNG photos that don't need transparency. If you want to reduce file size further after converting, use the image compressor to squeeze out an additional 40–80% reduction.
When to Convert to PNG
PNG is the format of choice when you need lossless quality and transparency support. Unlike JPG, PNG stores every pixel exactly as it is without discarding any data. This makes it ideal for logos, icons, illustrations, screenshots with text, and any image where sharp edges and exact colors matter.
Convert to PNG when the image has a transparent or semi-transparent background that needs to be preserved, when the image contains text that must stay crisp, or when you need to edit the image further without introducing compression artifacts. Note that PNG files are typically larger than JPG — if file size is a concern, consider using WebP instead, which offers lossless compression at a smaller size.
When to Convert to WebP
WebP is a modern image format developed by Google that produces significantly smaller files than both JPG and PNG at comparable quality. It supports transparency (like PNG) and lossy compression (like JPG), making it the most versatile format for web use. WebP images are typically 25–35% smaller than equivalent JPG files and up to 80% smaller than PNG files.
Convert to WebP when you are optimizing images for a website or web application. All modern browsers — Chrome, Firefox, Edge, and Safari 16 and later — support WebP natively. Converting your site's images to WebP can meaningfully improve page load speed and Core Web Vitals scores, which Google uses as a ranking factor.
Does Converting Change Image Quality?
It depends on the direction of the conversion. Converting from a lossless format (PNG) to a lossy format (JPG or WebP) will encode the image with some compression, which can introduce very subtle quality changes at the pixel level. At the quality setting used by our converter (92 out of 100), the visual result is virtually indistinguishable from the original.
Converting from JPG to PNG does not recover quality lost in the original JPG compression — it simply re-encodes the existing pixels into a lossless container. The result will be identical in appearance but larger in file size. For the highest possible quality, always start from the highest-quality source file available.
Converting between formats does not change image dimensions (width × height). If you also need to change the pixel size, use the image resizer before or after converting.
Why Is My PNG Larger After Converting From JPG?
This is expected behavior. JPG uses lossy compression to discard data and store only an approximation of the original pixels. PNG, by contrast, stores every pixel exactly using a lossless algorithm — which typically produces a larger file. When you convert a JPG to PNG, you are re-encoding the existing (already-compressed) JPG pixels into the lossless PNG container. The output PNG will accurately represent what the JPG looked like, but it will be larger because PNG does not discard data the way JPG does.
If you need a smaller file, converting JPG to WebP is a better choice — WebP can match or beat JPG quality at a smaller file size. Alternatively, convert to JPG and then run it through the image compressor to reduce file size further.
What Happens to Transparency When Converting to JPG?
JPG does not support transparency — it can only store fully opaque pixels. When you convert a PNG or WebP image that has a transparent background to JPG, the transparent areas are filled with a solid color. Our converter fills transparent areas with white, which is the most common and expected result for most use cases such as product photos, logos on light backgrounds, and documents.
If you need to preserve transparency, convert to PNG or WebP instead of JPG — both formats support full alpha channel transparency. A warning message appears automatically when our tool detects that you are about to convert a transparent image to JPG.
Privacy — Your Images Never Leave Your Device
All format conversion happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to a server, never stored anywhere, and never seen by anyone else. There are no accounts, no watermarks, and no usage limits. When you close the browser tab, the image data is gone — no trace remains on any server. This makes our tool safe for converting sensitive images such as identification documents, medical photos, contracts, and personal photographs.
For full details, see our Privacy Policy and Terms of Service.