Image Compressor

Switch on Target File Size and tap 100 KB, 50 KB or 1 MB, or type any other value in KB, then compress. The tool searches the quality setting first and only reduces the dimensions if quality alone cannot get under the budget. Leave the output format on JPG or WebP for small targets: PNG is lossless and has no quality lever, so a PNG gets there only by losing pixels. When a target cannot be met, the result tells you and gives you the closest size it achieved.

Open this page in Safari, add the photos from your library, switch on Target File Size and pick a budget such as 1 MB or 500 KB, or lower the quality instead. Download the results and they are saved to Files. Nothing is uploaded; the photos are compressed on the phone. For photos you take later, Settings, then Camera, then Formats, then High Efficiency saves them as HEIC, which takes roughly half the space of a JPEG.

It runs a binary search over the encoder quality, then falls back to reducing the resolution, keeping the best attempt within about a dozen tries. It is best effort, not a guarantee: PNG has no quality lever at all, and a very aggressive target on a detailed image may be unreachable. When it cannot get there, the result says so instead of pretending it succeeded.

WebP uses more advanced intra-frame prediction than JPEG, so it typically lands meaningfully smaller at comparable visual quality. AVIF goes further still, but no browser can write AVIF from a canvas today, so choosing AVIF here saves a WebP file instead.

You can drop one in, but you will get a single still frame: every output format on this page holds one frame, so the animation is lost. Use the GIF Compressor instead — it runs Gifsicle over the GIF itself and keeps the animation intact.

Yes. Set Output Format to JPG and drop in your PNG; JPG is the default output. PNG stores every pixel losslessly, which is ideal for logos and screenshots but produces very large files for photographs, so converting a photographic PNG to JPG typically cuts the size dramatically with no visible difference.

JPG has no transparency channel, so PDFixel fills transparent areas with white and shows you a notice saying so. Without that fill the encoder would render them black. If you need the transparency preserved, choose PNG or WebP as the output format instead.

Drop the image in and set Output Format before you compress. Choose JPG to turn a WebP into a JPG for apps and upload forms that still reject .webp files; transparent areas are filled with white, exactly as for a PNG. Choose WebP to convert a JPG or PNG to WebP, which is usually smaller at the same visual quality and keeps a PNG’s transparency. For WebP to PNG, pick PNG and expect a larger file, because PNG stores every pixel losslessly.