Image Compressor
Compress JPG, PNG, WebP and AVIF images directly in your browser. Reduce file size, target an exact size in KB, compare results and download instantly.
Drop your images here
or browse from your device
JPG, PNG, WebP, AVIF and GIF · up to 40 images · max 40.0 MB each
How to compress images online
Add your images
Drag and drop up to 40 images at once, or click to browse. JPG, PNG, WebP, AVIF and GIF are all supported, and your files never leave your device.
Pick a compression level
Light, Balanced or Strong covers most needs. Choose Custom for a precise quality slider, an exact target file size in kilobytes, an output format, or a maximum dimension.
Compress and compare
Press Compress all and watch the savings add up. Use the compare handle on any image to slide between the original and the compressed version before you commit.
Download your files
Save images one at a time, or grab everything at once as a single ZIP archive. There are no watermarks, no daily limits and no account required.
Compress an image to an exact file size
Most online compressors only give you a quality slider and leave you guessing. This tool lets you name the number instead: switch to the Custom level, choose Target size, and set the limit in kilobytes. It then searches automatically for the highest quality that still fits under your cap, shrinking the dimensions only if quality alone cannot get there.
| Target size | Typically needed for |
|---|---|
| 20 KB | Signature uploads on exam and banking portals. |
| 50 KB | Passport and ID photographs for online applications. |
| 100 KB | The most common cap on government and job application forms. |
| 200 KB | Document scans, certificates and mark sheets. |
| 500 KB | Blog images and product photographs for fast-loading pages. |
| 1 MB | Email attachments and messaging apps with upload limits. |
Supported formats
Compress JPG and JPEG
JPEG is the standard for photographs. Because it is already a lossy format, moderate re-compression usually removes a great deal of file size with very little visible change, which makes it the format that benefits most from this tool.
Compress PNG
PNG is lossless, so it has no quality dial of its own. For photographs saved as PNG the biggest win comes from converting to WebP, which the Auto setting does for you while preserving transparency. For logos, icons and flat graphics, reducing the dimensions is usually the more effective route.
Compress WebP and AVIF
Both are modern formats that already compress efficiently. You can still reduce them further by lowering quality or resizing, and you can convert between them to suit whichever platform you are uploading to.
Benefits
- Reduce image file size by up to 90% with almost no visible quality loss.
- Batch compress up to 40 images in a single pass.
- Set an exact target file size in kilobytes and let the tool find the right quality.
- Compare the original and compressed image side by side before downloading.
- Convert to modern formats such as WebP and AVIF while compressing.
- Optionally resize large photos down to 4K, 2K, Full HD or smaller.
- Works offline once the page has loaded — useful on slow or metered connections.
- No upload, no storage, no watermark, no signup and no daily limit.
Why compress images?
1. Faster websites and better SEO
Images are usually the heaviest part of a web page. Compressing them improves Largest Contentful Paint, one of the Core Web Vitals Google uses when ranking pages, and reduces the bandwidth every visitor has to download.
2. Meeting upload limits
Government portals, examination boards, job applications and banking forms often cap uploads at a fixed size such as 50 KB or 100 KB. Target-size mode hits those limits exactly, without repeated trial and error.
3. Lower bandwidth and hosting costs
Smaller files mean less data transferred on every visit, which matters on metered hosting plans and for visitors browsing on mobile data.
4. Complete privacy
Because compression happens on your own device, sensitive documents, identity photographs and client work never travel across the internet to a third-party server.
Frequently asked questions
Does compressing reduce image quality?
Lossy compression always discards some data, but at the Balanced preset the difference is very hard to see. Use the compare slider on any image to judge for yourself before downloading.
Are my images uploaded to a server?
No. Everything runs in your browser using the HTML canvas API. Your images are never transmitted, logged or stored anywhere.
How do I compress an image to 100 KB or 20 KB?
Select the Custom level, switch to Target size, and drag the slider to your limit. The tool finds the best quality that fits underneath it automatically, so you do not have to guess at a percentage.
Is there a limit on how many images I can compress?
You can process up to 40 images per batch, and there is no limit on the number of batches. The tool is completely free and needs no account.
Why did one of my images stay the same size?
If an image is already well optimised, compressing it again would make it larger. When that happens we keep your original file untouched and mark it as already optimised rather than handing back a bigger file.
Does compressing remove image metadata?
Yes. Re-encoding through a canvas drops EXIF data such as camera model and GPS location, which is usually welcome when sharing photographs publicly. Orientation is read first and applied to the pixels, so portrait photographs stay the right way up.
What happens to animated GIFs?
Animated GIFs are passed through unchanged. Re-encoding one through a canvas would flatten it to a single frame, so we leave them alone.
Does it work on mobile?
Yes. The tool is fully responsive, and on phones the compression controls appear in a floating bar at the bottom of the screen so they are always within reach.