How much can I reduce an image file?

Typically 50-80% size reduction. A 3 MB JPEG becomes 500-800 KB at quality 80 with virtually no visible difference.

Will compression affect image dimensions?

No. Compression only reduces file size — the image dimensions (width × height) remain unchanged.

What quality setting should I use for web?

75-80% is the industry standard for web images. At this level, most people cannot detect any quality difference.

Can I compress multiple images at once?

Batch compression is available with FileSwiftly Pro. The free tool compresses one image at a time.

Compress Image

Q: Which image formats are supported?

JPEG, PNG, WebP and GIF. For best results use JPEG for photos and PNG for graphics with transparency.

Reduce the size of your JPEG, PNG and WebP images while maintaining optimal quality.

~2–8 secondes Réduction : 50–80% JPG, PNG, WebP, AVIF Supprimé après 1h

Drag & drop your image here

or click to select

JPEG, PNG, WebP, GIF — Max 50 MB

Quality

Low High

75%

Concrete results

Real compression examples on typical files

Before / After

3.2 MB

Before

0.8 MB

After

75% average reduction

75%

average reduction

average time

Reduction by mode

JPEG 80% −70 to −75%

Before

100%

After

28%

PNG −60 to −70%

Before

100%

After

35%

WebP −75 to −80%

Before

100%

After

22%

"My 3 MB photos go down to under 300 KB with no visible difference. Incredible!"

Secure HTTPS connection

File deleted after 1h

50,000+ files processed/day

Processing in under 30s

How to compress an image online without quality loss?

Image compression reduces file size by 50 to 80% while preserving visual quality. FileSwiftly optimises your JPEG, PNG, WebP and GIF files directly in your browser with no installation required. The result: lighter images that load faster on the web.

JPEG, PNG and WebP compression

For JPEG photos, a quality level between 75 and 85% is the standard used by Google, Facebook and Twitter — visually indistinguishable but 60–75% lighter. For PNG images (logos, screenshots), lossless compression reduces size by 20–40% without changing a single pixel. The WebP format achieves up to 30% additional compression over JPEG at equivalent quality — ideal for modern websites.

Why optimise your website images?

Images account for an average of 60% of a web page's weight. Unoptimised images slow loading, hurt Google PageSpeed scores, and degrade user experience. Reducing image weight directly improves your SEO ranking, Core Web Vitals (LCP), and conversion rates.

Batch image compression with FileSwiftly Pro

The free plan compresses one image at a time. FileSwiftly Pro allows compressing up to 50 images simultaneously, exporting to WebP or AVIF, and accessing the REST API to automate compression in your development workflows.

FAQ

What quality setting should I use?

75–85% is optimal for most web uses. Below 60%, compression artifacts become visible in smooth areas.

Does compression change image dimensions?

No. Compression only reduces file weight, not dimensions (width × height). Use our Resize tool to change dimensions.

Which image formats are supported?

JPEG, PNG, WebP, and GIF as input. Output keeps the same format. Use our Image Converter to change formats.

Need more?

Compress up to 50 images at once with Pro

Batch processing WebP & AVIF export REST API access

Discover FileSwiftly Pro

★

Avis & Notation

Donnez votre avis

Votre note *

Prénom (optionnel)

Votre IP est anonymisée. Aucune donnée personnelle n'est conservée.

Commentaire *

0/500 caractères

Related tools

Continue with these complementary tools

See all tools

Convert Image

Change image format

Resize Image

Change dimensions in px/%

Remove BG (AI)

AI background removal

Compress PDF

Reduce PDF file size

Watermark Image

Add watermark to image