Image format conversion
The Image format converter re-encodes your photo or graphic between the three most common web formats — JPG, PNG and WebP. Just drop in the image, pick the target format and download the result right away. Everything runs directly in your browser via an HTML canvas, so the file is never uploaded, never stored anywhere, and no sign-up is required.
How the image format converter works
The tool loads your file and draws it onto an invisible canvas (HTML canvas) at its original size — the pixel dimensions (width × height) stay unchanged. From that canvas the browser then re-encodes the image into the target format you choose. This is a genuine re-encoding of the image data, not just a renaming of the file extension.
Each of the three formats has its purpose:
- PNG — a lossless format with support for transparency (alpha channel). Ideal for logos, icons, screenshots and graphics with sharp edges.
- JPG — a lossy format for photographs. It does not support transparency, so when converting from a PNG with a transparent background the tool automatically fills the backdrop with white.
- WebP — a modern format from Google that usually offers a smaller file at comparable quality and also handles transparency.
When saving to JPG and WebP a quality of roughly 92% is used, a high value with minimal visible loss. PNG is always lossless.
How to use the image format converter
- Drag an image onto the marked area, or click it and select a file.
- In the drop-down menu choose the target format — PNG, JPG or WebP.
- A preview of the result appears. Click Download and the file is saved to your computer.
Conversion example:
| Input | Target format | Output |
|---|---|---|
| photo.png | JPG | photo.jpg |
| logo.jpg | PNG | logo.png |
| banner.png | WebP | banner.webp |
What the image format converter is useful for
Changing format is handy in many situations: you need a smaller file for a faster website (converting to WebP), you are uploading to a system that accepts only JPG, or conversely you want to turn a photo into a PNG with crisp detail. Designers convert PNG logos to JPG for print, web developers unify formats for galleries, and everyday users simply adapt an image to the requirements of a form or e-shop.
Because the whole conversion runs locally in your browser, it is suitable even for sensitive images — personal photos, documents or company graphics. None of it leaves your device, so there is no risk of a leak to a third-party server. Tip: if you also want to shrink the file, run the Image compression tool after converting to set a lower quality.
FAQ
Does converting reduce the image quality?
It depends on the target format. PNG is lossless, so quality is preserved. JPG and WebP are lossy and are saved at roughly 92% quality — the loss is minimal and usually invisible to the eye, but repeated conversions into lossy formats add up.
Is transparency kept when converting to JPG?
No. The JPG format cannot store transparency. If you convert an image with a transparent background (typically a PNG) to JPG, the tool automatically fills that background with white. To keep transparency, choose PNG or WebP.
Is my image uploaded to a server?
No. The entire conversion runs directly in your browser using an HTML canvas. The file is never sent or stored anywhere, so the tool is safe even for private and sensitive images.
Does converting change the image dimensions?
No. The width and height in pixels stay the same as the original file. If you want to change the dimensions, use the Image resize tool.
Which format is best for the web?
For photos and smaller files, WebP is usually the best choice today, offering good quality at a smaller size. For graphics with transparency or sharp edges (logos, icons), PNG is suitable. JPG remains a widely supported option for photos where WebP is not desired.
Does the tool support HEIC or GIF formats?
The input can be any image your browser can display (commonly JPG, PNG, WebP, GIF and often HEIC in newer browsers). The output, however, is always only JPG, PNG or WebP — animation from a GIF is not carried over into a static image.
Can I convert several images at once?
The tool processes one image at a time. For another file, simply select or drag in a new image and repeat the process.
Why is my WebP smaller than the PNG?
WebP uses more efficient compression than both PNG and JPG and usually produces a significantly smaller file at the same visual quality. That is the main reason WebP is gaining ground on modern websites.
📅 Last updated: 16 July 2026