How do I compress a JPEG image online for free?

Click the Select Images button to select images, then choose Optimize mode and hit download. Your compressed JPEG is ready in seconds.

How much can I compress a JPEG without losing quality?

Most JPEG images can be compressed by 40–90% with no visible quality loss on screen. Optimize mode automatically finds the best compression level for each image individually.

Can I compress an image under 100 KB or 200 KB?

Yes. Switch to Target Size mode and enter your desired output size in KB. This is useful when a form, portal, or platform requires images under a strict size limit.

Can I compress multiple images at once?

Yes. Select multiple files at once or drop them together onto the page. All images are compressed simultaneously.

Does compressing an image reduce its dimensions or resolution?

No. Compression only reduces the file size — the pixel dimensions and aspect ratio of your image remain exactly the same as the original.

Is my image safe? Are files stored on your servers?

All uploaded and processed files are automatically and permanently deleted from our servers within 24 hours. Your images are never shared, sold, or accessed by us for any purpose.

How to delete uploaded images instantly?

Press the delete button on the image card menu and the image will be deleted permanently from our server. If you don't delete manually it gets automatically deleted after 1 day.

Can I compress PNG files without losing transparency?

Yes. PNG compression preserves alpha channel transparency in both lossless and lossy modes. Your transparent backgrounds remain intact after compression.

What is the difference between optimization and target size compression?

Optimization removes image data the human eye cannot detect, resulting in large size reductions with no visible quality difference. Target size compression focuses on hitting a required file size and may result in minimal quality loss.

Is CompressJPG.net completely free?

Yes. This tool is completely free for compressing and converting images online.

Image Compressor - Reduce JPEG, PNG and WebP Image Size

Compress and optimize your images online for free. Just select the images and image size will be reduced without affecting original image quality.

• Free Premium Features
• Quick Processing
• Max Size 50 MB per image

Best quality · size balance

How to Compress Images Online

compressing images here is a simple 3 step process that anyone can follow:

Upload Your Image

Click Select Images or drag and drop your JPG, PNG, or WebP file. You can upload multiple files at once. Maximum size is 50 MB per file.
Choose Compression Mode

Use Optimize for automatic best quality-to-size balance. Switch to Target Size if you need to reduce image under a specific file size. E.g. 100 KB, 20 KB or 50 KB.
Download Compressed File

Your image is compressed instantly. Click download button to save, scan the qr code to download the compressed image in mobile or share images by copying link.

Why Should You Compress Images?

Compressing and optimizing images saves your storage and time, along with the following benefits:

Faster Website & Better SEO

Images having large size loads slowly on websites, optimizing and reducing image size improves website speed and saves bandwidth.

Easier Sharing on WhatsApp, Email & Social Media

Sending large images on email and social media could be quite painful specially when there is file size limits, here compres the image compressor that allows you to reduce image size for sharing online.

Reduce image size for exam forms and portals

In India, Exam forms such as ssc, railways or banking have strict limits on image sizes and formats during uploading and form filling. You should compress the images here to match their size range before uploading.

No Visible Quality Difference

Optimizaion mode provides you the functionality to reduce images without losing original image quality.

Features

Everything you need to compress, convert, optimize and share images.

Multiple ways to add images — Upload images by selecting files from your device, paste an image URL directly, or simply drag and drop files anywhere on the screen.
Optimize mode — Automatically compresses your image to the best quality-to-size balance without any manual adjustment. Ideal for web, blogs, and social media.
Compress Image to a specific file size Need your image under 100 KB, 200 KB or any custom size? Switch to Target Size mode and set your exact limit. The tool handles the rest.
Share compressed images instantly — Download your compressed file, scan the QR code to transfer it to your mobile, or copy a direct link to share with friends without re-uploading anywhere.
Batch compression — Select and compress multiple images at once. All files are processed simultaneously so you save time when working with large sets of photos.
Auto-delete after 24 hours — All uploaded and processed files are permanently deleted from our servers within 24 hours. Your images are never stored, shared, or accessed beyond your session.
No account or software required — Works entirely in your browser on any device. No app to install, no signup, no watermark added to your files.

Supported Image Formats

This tool supports all major image formats used on web, mobile, and professional workflows.

Input Format	Output Format
JPG / JPEG	JPG
PNG	PNG
WebP	WebP
HEIC / HEIF	JPG
AVIF	JPG
TIFF	TIFF
GIF	GIF
SVG	PNG
PDF	JPG

Najczęściej zadawane pytania

Common questions about image compression and how this tool works.

: Click Select Images button to select images then Choose Optimize mode and hit download. Your compressed JPEG is ready in seconds.
: Most JPEG images can be compressed by 40–90% with no visible quality loss on screen. The Optimize mode automatically finds the best compression level for each image individually.
: Yes. Switch to Target Size mode and enter your desired output size in KB. This is useful when a form, portal, or platform requires images under a strict size limit.
: Yes. Select multiple files at once or drop them together onto the page. All images are compressed simultaneously.
: No. Compression only reduces the file size — the pixel dimensions and aspect ratio of your image remain exactly the same as the original.
: All uploaded and processed files are automatically and permanently deleted from our servers within 24 hours. Your images are never shared, sold, or accessed by us for any purpose.
: Press delete button on the image card menu, the image will be deleted permanently from our server. If you don't delete manually it gets automatically deleted after 1 day.
: {% translate "Yes. PNG compression preserves alpha channel transparency in both lossless and lossy modes. Your transparent backgrounds remain intact after compression. " %}
: Optimization method removes image data the human eye cannot detect — resulting in large size reductions with no visible quality difference. Target size compression focuses on the image target size required hence may result minimal quality loss.
: Yes. This tool is completely free for compressing and converting images online.

Image Compressor - Reduce JPEG, PNG and WebP Image Size

How to Compress Images Online

Upload Your Image

Choose Compression Mode

Download Compressed File

Why Should You Compress Images?

Faster Website & Better SEO

Easier Sharing on WhatsApp, Email & Social Media

Reduce image size for exam forms and portals

No Visible Quality Difference

Features

Supported Image Formats

Najczęściej zadawane pytania

Our All Image and PDF Editing Tools for Everyday work:

Compress Image

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Image to ZIP

JPG to PDF

Konwerter obrazów na pliki PDF

HEIC to JPG

Image to Caption

Compress JPEG to 100 KB

Compress JPEG to 50 KB

Compress JPEG to 20 KB

Compress JPEG to 200 KB

Kompresja plików PDF

Z pliku PDF do obrazu

Combine PDF Online

Split PDF Pages

Delete Pages from a PDF