Add a watermark

Both. Type any text (your name, a © line, a handle) or pick an image such as your logo. A PNG with transparency blends best. If you set both, the image is used.

It repeats the watermark diagonally across the whole photo. It is the option that makes a proof or preview image hard to reuse without permission.

PNG output is lossless. JPG and WebP are re-encoded at the quality you pick; at the default setting the difference is not visible. Dimensions never change.

Yes: pick an image file (PNG with transparency works best) instead of typing text, then set its size, position and opacity.

Yes. The same text or image, position, size and opacity are applied to every photo in the queue, and you download them one by one or as a ZIP.

Yes, 100% free. No account, daily limit, per-image quota or payment to keep converting. Convert as many images as you need in successive batches. Practical limits still apply: device memory, browser support, up to 5,000 supported files per ZIP and 256 MB per extracted file.

No. Conversion runs entirely in your browser, so personal photos and company documents are as safe here as on your own computer. Many online converters upload your files to a server and you never know where they end up; here there are no uploads and no account. Your images never leave your device.

Yes, in an updated mobile browser. Conversion uses your device’s memory, so on a phone convert in smaller batches and keep the tab open while it works.

There is no fixed quota. The practical limit is your device’s memory: very large images and big batches can be slow or fail. Inside a ZIP, files over 256 MB are skipped.

PNG preserves the decoded pixels but cannot restore detail already lost in the original. JPG and PDF use JPEG compression. Metadata, HDR and animations are not preserved.

Try an updated browser and a smaller batch. Unsupported codecs, corrupt files or insufficient memory may prevent conversion.