Drop images to convert, resize or compress them — all processing happens in your browser and your images never leave your device.
Convert, compress and resize images without uploading them
This free image converter changes JPG, PNG, WEBP, AVIF, BMP, GIF, TIFF and SVG files into JPG, PNG, WEBP or AVIF — entirely on your own device using your browser's built-in encoder. Because nothing is uploaded, it works on private photos, ID scans and client work without any privacy risk, and there's no file-size billing or queue.
Batch processing with one ZIP download
Drop up to 50 images, set the output format, quality, resize target, center-crop aspect, rotation and optional watermark once, and convert everything in one click — then download individual files or a single ZIP.
Metadata removed automatically
Re-encoding through the canvas strips EXIF data — including GPS location, camera model and timestamps — from every output file, which is exactly what you want before posting photos publicly.
Frequently asked questions
Why is AVIF or WEBP greyed out?
Encoding support depends on your browser. Chrome and Edge encode both; Safari and Firefox support varies by version. The tool detects this and disables what your browser can't write.
Can it convert HEIC iPhone photos?
Most desktop browsers can't decode HEIC. On an iPhone, share the photo as JPG (or set Camera → Formats → Most Compatible), then convert here.
Is there a file-size limit?
Only your device's memory. Very large images (50+ megapixels) may be slow on phones.
Pixels, dimensions, and file size
An image is a grid of pixels: width times height. A 1920 x 1080 image contains 1920 x 1080 = 2,073,600 pixels. Doubling both dimensions to 3840 x 2160 gives four times as many pixels, which is why larger images take more memory and usually produce bigger files.
What changing the format actually does
Converting a PNG to a JPEG doesn't resize the image — the pixel dimensions stay the same. What changes is how the data is stored. This tool converts between JPEG, PNG, WebP, and AVIF, and can resize or crop as well.
Compression and transparency
JPEG uses lossy compression: it discards some detail to shrink the file, and it can't store transparency. PNG is lossless and supports transparency, which suits logos and screenshots. WebP and AVIF are newer formats that often reach smaller sizes than JPEG at similar quality, and they support transparency too.
What happens to your file
Conversion runs in your browser using the canvas, so the image is processed on your device rather than uploaded to a server.
Why JPEG changed digital photography
Photographic images contain huge amounts of pixel data. JPEG standardized lossy image compression, making photographs far more practical to store and transmit by trading some image information for much smaller files.
Why PNG took a different path
PNG became a W3C Recommendation in 1996. It uses lossless compression and supports transparency, making it especially useful where exact graphics, text-like edges or transparent backgrounds matter.