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Image Compressor & Resizer – Free Online Tool
Quick answer: Compress and resize JPG, PNG and WebP images in your browser without uploading.
About this tool
Shrink image file size by lowering quality or limiting width, then save as JPG or WebP. Everything runs on your device, so your photos stay private.
How to use the Image Compressor & Resizer
- Enter your text, choose your file or set the options in the tool above.
- Click the action button for the result you want.
- Copy or download the output. Nothing leaves your device.
Why compress images?
Large photos slow down websites, fill email limits and get rejected by upload forms that ask for files under 100 KB or 200 KB. Compressing reduces the file size while keeping the picture good enough for its purpose. Smaller images also help web pages load faster, which is good for visitors and for search rankings.
JPG, WebP or PNG?
- JPG: best for photos and works everywhere.
- WebP: usually smaller than JPG at similar quality, and supported by modern browsers.
- PNG: lossless, so the quality slider does not shrink it. To reduce a PNG, set a smaller maximum width. Transparent areas become white in this tool.
Recommended settings
- Website photos: quality 75 to 85 and a maximum width of 1280 to 1600 pixels.
- Thumbnails and blog images: quality 70 and width 600 to 800 pixels.
- Form uploads with a size limit: lower the quality in steps of 10 until the result is under the limit.
Good habits
Always compress from the original picture, not from an already compressed copy, because every pass loses detail. Check the preview before downloading, and keep the original file as a backup. Your images are processed on your device and are never uploaded.
Why use ToolWorlds?
- Free, with no registration
- Private: runs in your browser
- Works on phones, tablets and desktops
Frequently asked questions
- Which format is smallest?
- WebP is usually smaller than JPG at the same visual quality.
- What quality should I choose?
- 70 to 85 percent is a good balance of size and sharpness for most photos.
- Is my data safe?
- Yes. Processing happens in your browser. Nothing you enter is sent to our servers.
- Is it free?
- Yes. It is free, with no sign-up or usage limit.
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