Compress Image Online

Reduce JPG, PNG and WEBP file sizes by up to 90% while preserving visual quality — ideal for speeding up websites, shrinking email attachments or saving storage space. Images are processed entirely in your browser and never uploaded to any server.

Drop your images here

Supports JPG, PNG, WEBP — Multiple files supported

Compression Complete!

Original Size
Compressed Size
Saved
Reduction
Compressed image

How to Compress an Image

1

Upload Your Image

Click "Choose Image" or drag & drop your JPG, PNG, or WEBP file.

2

Adjust Quality

Use the quality slider to balance between file size and image quality.

3

Download

Click "Compress Image" and download your optimized file instantly.

Features

  • Supports JPG, PNG, WEBP
  • No file size limit
  • Files never leave your browser
  • Adjustable compression quality
  • Batch compression
  • Instant download
  • 100% free, no sign-up

Free Online Image Compressor

Reduce the file size of your JPG, PNG and WEBP images without sacrificing visible quality. Our browser-based compressor processes everything locally — your images never leave your device, making it the fastest and most private image compression tool available.

Features

Lossless-like Quality

Intelligent compression preserves sharpness and colour depth at even 80% reduction.

100% Private

Files are processed entirely in your browser. No uploads, no server, no data collection.

Instant Results

No waiting for server round-trips. Compression happens in milliseconds locally.

Adjustable Quality

Fine-tune the quality slider from 10% to 100% to find your perfect size/quality balance.

Multiple Formats

Compress and convert between JPG, PNG and WEBP in one step.

One-Click Download

Download your compressed image instantly with a single click.

Who Uses This Tool?

Photographers Reduce portfolio images for faster website loading without losing detail.
Web Developers Optimise hero images and thumbnails to improve Core Web Vitals scores.
Email Marketers Shrink images to stay under email attachment size limits.
Social Media Prepare images that load fast on mobile feeds.

Common Questions

Does compressing reduce image quality?
Compression at 80–90% quality is virtually indistinguishable from the original. Only at very low settings (below 50%) do artefacts become visible.
Is there a file size limit?
No. Because all processing happens in your browser, the only limit is your device's memory.
Which format gives the smallest file?
WEBP typically produces 25–35% smaller files than JPG at equivalent quality. Use it when browser compatibility is not a concern.
Can I compress multiple images at once?
Yes — select multiple files in the file picker and all will be compressed with the same settings.

Pro Tip

Use WEBP output format for the smallest possible file size. Modern browsers support it and it typically saves an extra 25–35% compared to JPG at the same quality level.

Did You Know?

65%
Average Web Page is Images
Images account for about 65% of a typical webpage's total size, making compression the single biggest performance improvement most sites can make.
1992
JPEG Was Invented
The JPEG standard was finalized in 1992 by the Joint Photographic Experts Group. It remains the world's most widely used image format over 30 years later.
26%
Average WebP Saving vs JPEG
Google's WebP format produces files 25–34% smaller than JPEG at equivalent quality. For PNG, the savings are even greater at up to 50%.

Quality Setting Guide

QualityTypical ReductionBest ForVisible Quality
90–100%10–30%Print, archivingPerfect
80–89%30–50%High-res web imagesExcellent
70–79%50–65%General web useVery good
60–69%65–75%Thumbnails, previewsGood
Below 60%75%+Tiny file size neededNoticeable artefacts

You May Also Ask

What is the difference between lossy and lossless compression?
Lossy compression (JPEG, WebP) permanently discards some image data to achieve smaller sizes. Lossless compression (PNG, GIF) reduces size without any data loss — every pixel is preserved exactly. For photographs, lossy is usually fine; for logos, screenshots and text, use lossless.
Why does my compressed image look blurry around edges?
Blurriness around high-contrast edges (like text on images or sharp lines) is called "compression artefacts" or "blocking". This is most visible at low quality settings (below 60%). Increase the quality slider to 75–85% to eliminate this effect while still saving significant file size.
Should I compress images before or after uploading to my website?
Always compress before uploading. Running compression once locally is more efficient than relying on server-side processing, and you maintain control over the quality/size balance. Many CMS platforms also apply additional compression — if yours does, you may be compressing twice.

Common Mistakes

Compressing an already-compressed image
Re-compressing a JPEG degrades quality each time — the losses stack up. Always compress from the original source file.
Keep original files safe; only compress for export.
Using PNG for photographs
PNG lossless compression is inefficient for photographs — files are 3–10× larger than JPEG with no visible quality benefit.
Use JPG or WebP for photos; PNG for graphics and logos.
Compressing to meet a pixel size limit
Compression controls file size in kilobytes (KB), not pixel dimensions. To change width/height, use the Resize Image tool first.
Resize → then compress for the smallest final result.