Drop your image here
Max 20MB
Compress Image Online Free — Reduce Photo, Screenshot & Graphic File Size
Compress Image is a free browser-based tool that makes JPG, PNG, WebP, and AVIF files smaller without an editor, a plugin, or a maze of settings. Add your picture, pick the file size you need, and download a lighter copy that still looks right on screen.
Image files are heavy for three reasons: pixel dimensions, color detail, and format. A phone photo can be 4,000 pixels wide and several megabytes, yet most websites, emails, and chat windows display it at a fraction of that. Shrinking the dimensions to what will actually be shown and compressing the remaining detail removes data nobody would notice while keeping what they would.
Not sure how small to go? As a rough guide: under 20KB for icons and avatars, 50–100KB for thumbnails, email, and chat, around 200KB for blog and banner images, and up to 500KB when you want to keep more detail for documents and slides. If you already know your exact limit, the dedicated size tools on this site are tuned for it.
Everything runs inside your browser, so your images aren't uploaded to a server. There's no account, no watermark, and no queue — which makes it a safe choice for personal photos, client work, and screenshots containing details you'd rather not share.
Common questions
- How do I compress an image without losing quality?
- A big drop in file size can't be perfectly lossless, but at normal viewing size the difference is usually invisible. Start with a generous target, compare the preview with your original, and only go smaller if the file is still too large for where you need to use it.
- Is it better to reduce pixel dimensions or compression quality?
- Usually a balance of both. Cutting pixel dimensions removes the most data and costs you nothing if the image will be displayed small anyway, while compression trims fine detail on top. The tool adjusts the two together so you don't end up with a huge image squeezed into a blocky mess.
- Which image formats can I compress?
- You can upload JPG, JPEG, PNG, WebP, and AVIF files. The result downloads as a standard JPEG, which is accepted almost everywhere images are used.
- Can I choose my own target size?
- Yes. Set the size in KB that your website, email, or upload field asks for and the tool works toward it. If your limit is a common one, there are ready-made pages for 10KB, 20KB, 50KB, 100KB, 200KB, and 500KB.
- How small can I make an image before it looks bad?
- It depends on the content. Flat graphics and logos survive very small sizes, while detailed photos, fine text, and gradients show damage sooner. If a result looks soft, crop to the important area first, then raise the target size one step.
- Will compressing change my image's dimensions in pixels?
- It can. To reach a small file size the tool may scale the width and height down as well as lowering quality. If exact dimensions matter for your project, check them on the downloaded file.
- Does this tool work on my phone?
- Yes. Open compressimageweb.com in any mobile browser, choose a picture from your gallery, and download the smaller version — no app to install.
- Is it safe to compress private images here?
- Yes. Compression happens locally in your browser session, so your files aren't uploaded to or stored on a remote server.
- Is there a limit on how many images I can compress?
- No. It's free, with no sign-up, no watermark, and no cap on the number of images you process.