Compress Image

Compress image files by quality, format and size

This tool shrinks image files in your browser by re-encoding them at a quality you pick, with no upload and no sign-up. Drop in JPG, PNG or WebP files, set the quality slider, and every result shows its size before and after, so you can see exactly what a setting bought you. A batch comes back in one ZIP file.

The slider starts at 80. That setting keeps most photos looking the same on screen while cutting the file down hard. Go lower for email attachments and strict form uploads. Stay higher when the picture will be printed or viewed full screen.

How to compress an image

1. Drop one image into the box above, or add a whole batch at once.
2. Pick the output format. JPG suits photos, WebP suits web pages, and PNG suits graphics with sharp edges or transparency.
3. Move the quality slider. Eighty is the starting point, and the result line shows the new size for every file.
4. Add a longest-edge cap in pixels if the image is also too big in dimensions, not just in bytes.
5. Download each file on its own, or take the whole batch as one ZIP.

JPG, PNG or WebP: which output shrinks best

Photos belong in JPG or WebP. A camera photo holds millions of colors and smooth gradients, and both formats were built to store that kind of picture in few bytes. WebP usually lands 25 to 35 percent smaller than JPG at the same visible quality, and every current browser displays it. JPG stays the safer pick when the file is headed to an older program, a printer, or a form that lists the formats it accepts.

PNG plays a different game. It is the right home for screenshots, logos, diagrams and anything with crisp text or a transparent background. Squeezing a photo into PNG rarely helps, because PNG stores every pixel exactly as it is. If a graphic must stay PNG, the win comes from the edge cap, not from the format itself. When a form names a hard byte cap instead of a quality setting, the compress image to 100KB tool aims at the number directly. Both tools live in the wider image tools collection.

The honest trade-offs of compression

Compression is a trade, and this page will not dress it up as anything else. A smaller lossy file always gives up some detail, even when your eyes cannot spot the loss at a sensible setting. Push the slider low enough and the cost shows up as soft edges, blocky patches in skies and smeared fine text. That is the physics of the formats, not a flaw in this tool.

PNG output here is lossless, which sounds like a free win and is not. The browser PNG encoder stores pixels exactly, without the palette tricks that dedicated PNG optimizers use, so a PNG saved from this tool may barely shrink at all. A file that is already small can come back the same size, or a touch larger. The result line shows the true numbers either way, and nothing is padded or renamed to look better than it is.

Your files stay on your device

Every step runs in this browser tab. Your images are never uploaded, never stored on a server and never seen by anyone at ToolPeko. Close the tab and the work is gone. There is no account, no daily limit and no watermark on anything you download.