Convert between JPG, PNG, WebP, AVIF, BMP, GIF and more with quality control and live previews. Batch convert images free in your browser.
The Image Format Converter changes pictures between JPG, PNG, WebP, AVIF, BMP and GIF entirely inside your browser, with a quality slider and live before-and-after previews so you can judge the trade-off between file size and sharpness before downloading. It handles single images or a batch at once, which suits anyone preparing assets for a website, an app icon set or an email attachment limit.
Different formats exist for different reasons: JPG suits photos, PNG suits graphics with transparency, WebP and AVIF give smaller files at similar quality for the web, and GIF and BMP remain useful for legacy compatibility. Rather than installing conversion software or relying on an online uploader that stores your files, this tool reads and re-encodes images locally, so you keep full control of your originals.
JPG, PNG, WebP, AVIF, BMP and GIF are all supported in both directions, so you rarely need a second converter regardless of the source or target format.
The quality slider shows the resulting file size and a visual preview before you commit, so you can pick the smallest file that still looks sharp.
Convert a folder's worth of images to the same target format in one pass instead of repeating the process file by file.
Images are decoded and re-encoded in the browser using its own image APIs, so nothing is uploaded and the tool works even with confidential material.
WebP is a practical default for websites, typically 25-35% smaller than an equivalent-quality JPG with broad browser support. AVIF compresses further still but is slightly less universally supported in older software, and JPG remains the safest fallback for maximum compatibility.
Converting between two lossy formats (such as JPG to WebP) re-compresses the image, so some quality loss can occur, though it is usually invisible at sensible quality settings. Converting to a lossless format like PNG preserves whatever quality the source already had.
PNG, WebP and GIF can carry transparency; JPG and BMP cannot, so a transparent PNG converted to JPG will get a solid background fill. GIF can also hold simple animation, which is not preserved when converting to a single-frame format like JPG or PNG.
The number of images you can convert in one batch is limited only by your device's memory and browser tab, since every image is processed locally. Very large batches of high-resolution photos may take longer to process than a handful of small images.
WebP is the practical default — typically 25–35% smaller than JPG at the same quality with wide browser support. AVIF is smaller still, and JPG remains the safest universal fallback.
Converting to a lossless format (PNG, BMP) preserves everything. Converting to JPG, WebP or AVIF re-encodes the image, so keep quality at 80 or above and avoid repeated round trips.
Yes. Image Format Converter on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.
Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.
Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.