How to use the Image Compressor tool
- Add your imagesDrag and drop JPG, PNG or WebP files onto the box, or click to choose them. You can add up to 30 at once.
- Adjust the settings (optional)The default 75% quality works well for most photos. You can also change the format, limit the width or set a target size in KB.
- Check the savingsEach image shows its old size, new size and the percentage saved.
- DownloadDownload images one by one, or all together as a ZIP file.
Why compress images here
- Truly privateImages are compressed by your own browser. They are never uploaded, so personal photos and documents stay on your device.
- Target file sizeNeed a photo under 100 KB or 200 KB for an online application? Tick “target file size” and the tool finds the best quality that fits.
- Smart format choiceConvert to WebP for the smallest files, or keep JPG for maximum compatibility.
- Resize while compressingLimit the width to 1920 px or less. Large camera photos shrink dramatically with no visible difference on screen.
- Batch processingCompress a whole folder of photos in one go and download them as a single ZIP.
- Never worseIf an image is already well optimized, the original is kept instead of producing a larger file.
Why compress images?
Photos from modern phones and cameras are often 3 to 10 MB each. That is far more detail than a screen can show, and it causes real problems: email attachments bounce, upload forms reject your file, and websites load slowly. Compressing an image removes data the human eye barely notices, often cutting the file size by 60–90% while the picture looks the same.
For website owners, smaller images are one of the easiest ways to improve page speed and Core Web Vitals, which affect both user experience and search rankings. For everyone else, compression simply means your photos fit where they need to go.
How image compression works
This tool uses lossy compression. JPG and WebP formats store images in a way that lets the encoder discard fine detail and subtle color variation that people rarely notice. The quality slider controls how much is discarded:
- 80–95%: virtually indistinguishable from the original. Best for photography portfolios and printing.
- 60–80%: the sweet spot for websites, email and social media. Large savings with no visible difference at normal viewing size.
- 30–60%: very small files. Some softness or blockiness may appear on close inspection. Fine for thumbnails and previews.
PNG is a lossless format, so re-saving a PNG as PNG rarely makes it much smaller. For PNG photos and screenshots, choose JPG or WebP as the output format to get big savings. Keep PNG only when you need transparency or pixel-perfect graphics such as logos.
JPG vs PNG vs WebP
| Format | Best for | Transparency | Typical size |
|---|---|---|---|
| JPG | Photos, maximum compatibility | No | Small |
| PNG | Logos, icons, screenshots with text | Yes | Large |
| WebP | Websites and apps | Yes | Smallest (often 25–35% smaller than JPG) |
Compressing a photo to a specific size
Government portals, exam applications and job sites often require a photo or signature under a limit such as 50 KB, 100 KB or 200 KB. Tick Compress to a target file size, enter the limit and add your image. The tool tries different quality levels and keeps the best-looking version that fits. If the result still looks too soft, also choose a smaller maximum width, since fewer pixels need fewer bytes.
Is it safe to compress private photos here?
Yes. Unlike most online compressors, this one never uploads your files. All processing happens inside your web browser using the built-in image encoder, so ID cards, signatures and family photos never leave your computer or phone. As a side effect, compression is instant, because there is nothing to upload or download.