Compress images

How to compress images

1. 1Select Choose files or drop your images on the page.
2. 2Pick the Format and Quality; optionally limit the Longest side.
3. 3Select Compress image, then drag the divider over the image to compare before and after (or focus it and use the arrow keys).
4. 4Download each image, or all of them as one ZIP file.

Options

Format

“Same as input” keeps each image’s format. WebP and AVIF usually give smaller files than JPG for a similar look; AVIF is the smallest but slowest to create. PNG is lossless.

Quality

0–100 for JPG, WebP and AVIF (default 75). Not used for PNG, which is optimized without changing a pixel.

Longest side

“Keep the size” by default, or 3840, 2560, 1920, 1280 or 1024 px. Scales larger images down so their longest side fits, keeping the proportions; images that are already smaller are not enlarged.

Remove metadata

On by default: the compressed images carry no location, camera or date details. Turn it off to keep them; this works only when a JPG stays a JPG, and other images are saved without them.

Smaller files, same look

Lossy formats store what the eye notices and drop fine detail it doesn’t; the Quality setting decides how much. Photos taken sideways are turned upright, so they look right in every app. If compressing would not make an image smaller, and its size wasn’t reduced with Longest side, the original is kept in its own format and the list says so.

Formats and limits

Input

JPG, PNG, WebP and AVIF.

Size

Up to 100 MB per image and 50 images at a time, and up to 120 megapixels per image (50 on phones and tablets).

Output

Named after the original with -compressed added, e.g. photo-compressed.jpg; several images also as one ZIP, images-compressed.zip.

Troubleshooting

• “Already well optimized, original kept.” The result wasn’t smaller, so you get the original, even if you chose another format. With Remove metadata on, its metadata is still removed (AVIF originals are returned unchanged). For a smaller file, lower the quality, choose WebP or AVIF, or reduce the longest side.
• AVIF takes a long time. AVIF encoding is slow: about 30 seconds per 12-megapixel photo on a fast computer, and longer on a phone. WebP is about six times faster and usually still much smaller than JPG.
• “The limit on this device is … megapixels.” Very large images need more memory than the browser can safely use here. Use a desktop browser or a smaller image.

How your data stays private

Everything happens in your browser, on your device. Your files and text are never uploaded, never stored, and never put in the address bar.

• The site’s security policy (connect-src 'self') tells your browser to block any attempt by the page to send data to another server.
• Only your preferences, such as the theme and a tool’s last-used options, are saved in your browser’s local storage. Never your content.
• To check it yourself, open your browser’s developer tools, select the Network tab, and use the tool: no request carries your data.

There is no account, no sign-up and no watermark. After your first visit, pages open without a connection; a tool’s larger parts, such as the PDF and image engines, are saved the first time you use it, so it works offline from then on.

Frequently asked questions