Compress Images & Reduce File Size

Shrink image file size with quality and target-size controls. Optimise for web, email, and Core Web Vitals.

Last updated:2 August 2026

Reduce Image File Size

Reduce image file size with quality and target-size controls while keeping the original dimensions. If you need to change the image format rather than focus on compression, use our Image Format Converter.

Private: Runs entirely in your browserFast: No uploads to a serverFree: No limits or sign-ups

Upload image

Preview

Upload an image to preview

Compression quality80%

Higher compressionHigher quality

Lower settings create smaller files with more quality loss. Higher settings preserve more detail but produce larger files. Applies to JPEG and WebP.

Output format

Target a specific file size

Target size

Choose the maximum file size you want the compressed image to target.

Original:-Compressed:-

No sign-up required ·Runs locally in your browser ·No data uploaded

Why Use This Image Compressor?

Shrinking your image file sizes reduces unnecessary bytes without changing their visual dimensions. Smaller images load faster, improve page performance, and are essential for optimal web design and Core Web Vitals.

Reduce File Size

Shrink JPEG, PNG, and WebP images efficiently while keeping full control over quality and target output sizes.

Improve Page Speed

Lighter images require less bandwidth, helping improve your website loading speeds, LCP scores, and Core Web Vitals.

100% Private

Everything happens locally inside your browser. Your photos and graphics never leave your device or touch an external server.

Production Ready

Generate optimized visuals ready for CMS uploads, smaller email attachments, and high-performance production websites.

How Browser-Based Image Compression Works

The compressor uses your browser's built-in image processing capabilities to decode, optimize and export images without sending files to an external service.

1. Select Your Image

Choose a JPEG, PNG or other supported image file from your device. The image is loaded locally inside your browser.

2. Optimize Compression

The image is drawn onto a browser canvas and exported using your selected format and quality settings.

3. Download Your File

Once compressed, download the smaller image directly to your device. Nothing is stored online.

Compression Formats

JPEG

Best for high-color photos where small file sizes are needed.

PNG

Best for images requiring transparency or crisp text/icons.

WebP

Modern format providing superior compression for web use.

Need to change an image from one format to another without using compression controls? Use ourImage Format Converterinstead.

Understanding Image Compression & Optimization

Our Image Compressor helps reduce image file sizes directly inside your browser. Compress JPEG, PNG and WebP files, adjust quality settings, and download optimized images without uploading your files to a server.

What Is an Image Compressor?

An image compressor reduces the file size of an image by optimising how visual data is stored. Smaller image files load faster, use less storage space, and improve website performance while keeping the image looking visually similar.

This tool works entirely in your browser, allowing you to compress images instantly without installing software, creating an account, or uploading files anywhere.

Private by Design

Your images are processed locally using your browser. Files are never uploaded, stored, or transmitted to our servers, keeping your images private.

Adjustable Compression Quality

Control the balance between file size and image quality using the compression slider. Higher quality keeps more detail, while lower settings create smaller files.

JPEG, PNG & WebP Support

Choose the output format that suits your needs. JPEG works well for photographs, PNG supports transparency, and WebP provides modern web-friendly compression.

Improve Website Performance

Large images can slow down websites and increase bandwidth usage. Compressing images helps pages load faster and creates a better experience for visitors.

Popular Uses

Optimising website images
Reducing email attachment sizes
Preparing images for blogs
Compressing ecommerce product photos
Creating smaller social media uploads
Saving storage space

No Software Required

Compress images instantly from any modern browser. There are no downloads, plugins, accounts, or complicated settings required.

Browser Compatibility

The compressor works in all modern browsers without extensions or additional software.

ChromeFirefoxSafariEdgeBraveOpera

Understanding Image Optimization

Learning how compression affects quality and file size helps designers, developers and content creators prepare better images for the web.

Key Features Explained

How this browser-based image compression tool works.

Client-side processing– Images are processed locally inside your browser without server uploads.
Multiple output formats– Compress images as JPEG, PNG or WebP files while choosing the output format that suits your needs.
Quality control– Adjust compression settings to balance size and visual quality.
Instant preview– Preview your image before downloading the compressed version.
Privacy-focused design– Your files remain on your device throughout the process.
Fast workflow– Compress images quickly without accounts, installations or waiting queues.

How This Tool Works & Your Privacy

This utility runs entirely client-side inside your browser using secure JavaScript execution loops. No source content, strings, or uploaded files are transmitted, processed, or saved on external servers.

When to Use This Tool

Use when the same image must weigh less (page speed, email limits, storage). Use the Image Format Converter when the file type must change but size is secondary.

Before uploading images to a CMS
Hit a maximum upload size
Improve LCP and page weight
Smaller email attachments
Optimise a hero image for the web

Browser Requirements

This tool runs directly in your browser. For the best experience, use a modern browser with JavaScript enabled.

Modern browser (Chrome, Firefox, Safari, or Edge)
JavaScript enabled
HTML5 File API support
Sufficient memory for larger images

Frequently Asked Questions

Is my image data private?⌵

Yes. All image processing happens locally inside your browser. Your images are never uploaded, stored, or sent to our servers.

How does this image compressor work?⌵

The tool uses your browser's built-in image processing capabilities to compress images locally. Files are decoded, optimized, and exported directly on your device without requiring a server.

Does this image compressor upload my files?⌵

No. Your images never leave your device. Compression happens entirely within your browser, making it suitable for private or sensitive images.

What image formats are supported?⌵

This tool supports common web image formats including JPEG, PNG, and WebP. You can choose your preferred output format before downloading.

Can I convert images to WebP?⌵

Yes. You can export WebP while compressing, which often reduces bytes further. If you only need to change format without focusing on compression controls, use the <a href="/tools/media/image-converter/" class="text-purple-600 dark:text-purple-400 hover:underline">Image Format Converter</a>.

Image Compressor vs Image Format Converter?⌵

Use this compressor to reduce file size (quality slider, target size). Use the <a href="/tools/media/image-converter/" class="text-purple-600 dark:text-purple-400 hover:underline">Image Format Converter</a> to change PNG, JPG, or WebP type while keeping dimensions.

What is the best image format for websites?⌵

WebP is often a great choice for modern websites because it provides efficient compression. JPEG is usually best for photographs, while PNG is useful for images requiring transparency or sharp details.

Will compressing an image reduce quality?⌵

Compression can reduce image quality depending on the settings used. The quality slider allows you to choose the right balance between smaller file size and visual clarity.

Can I compress JPEG images?⌵

Yes. JPEG images can be compressed to reduce file size and make them easier to store, share, or use on websites.

Can I compress PNG images?⌵

Yes. PNG images can be processed and converted. However, PNG files containing transparency or detailed graphics may behave differently from photographic images.

Can I compress images without installing software?⌵

Yes. The image compressor works directly in your browser with no downloads, plugins, applications, or accounts required.

Can I use this image compressor on mobile?⌵

Yes. The tool works in modern mobile browsers, allowing you to compress images from smartphones and tablets.

Is there a file size limit?⌵

The tool does not upload files to a server, so there is no server-side upload limit. Performance depends on your device's available memory and browser capabilities.

Can I compress images for my website?⌵

Yes. Compressing images before adding them to a website can improve loading speeds, reduce bandwidth usage, and create a better experience for visitors.

Can I compress images for email?⌵

Yes. Reducing image file sizes can make attachments smaller and easier to send through email services with attachment limits.

Does image compression improve website speed?⌵

Yes. Smaller image files usually download faster, helping improve page performance, especially on slower connections or mobile devices.

Can I resize images with this tool?⌵

No. This tool focuses on reducing image file size while keeping the original dimensions. If you need to change image dimensions, use an image resizing tool.

Is this image compressor free?⌵

Yes. The tool is completely free to use with no sign-up, account, or subscription required.

How many images can I compress?⌵

You can compress images as needed. Since processing happens locally in your browser, the practical limit depends on your device and browser performance.

What browsers does the image compressor support?⌵

The tool works with modern browsers including Chrome, Firefox, Safari, Edge, Brave, and Opera.

Are compressed images stored anywhere?⌵

No. Images are processed temporarily in your browser and are not stored online or saved to a database.

Next step in this workflow:

Continue your task by using the Image Format Converter.

Go to Image Format Converter ➔

Related Utilities

Image Format Converter

Change image file type between PNG, JPEG, and WebP while keeping dimensions. For maximum size reduction with quality controls, use the Image Compressor. In-browser, no uploads.

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Video Compressor

Make video files smaller with compression level, resolution, and target file size. Typically MP4 output. For MOV→MP4, GIF, or MKV format changes, use Video Format Converter. FFmpeg in your browser; no upload.