Image Compressor
Compress JPG, PNG, and WebP images while maintaining quality. All processing happens in your browser — no upload required.
How to Use
Upload a JPG, PNG, or WebP image and let the tool compare the original and compressed versions side by side. Move the quality slider to find a balance between file size and visual clarity, then download the version that works best for your project.
If the image is still larger than you want, try lowering the quality a little more or using a modern format like WebP. The preview helps you see exactly how much detail you are giving up before you save the file.
Common Use Cases
People use image compression to speed up websites, shrink email attachments, meet upload limits, and reduce storage costs for galleries or archives. It is also useful when preparing social posts, product photos, documentation screenshots, or any other image that needs to be lighter without changing its dimensions.
For teams, compression is often part of a publishing workflow: images are resized, compressed, and then uploaded to a CMS or shared with clients. That keeps the final page weight lower and makes the experience better for users on slower connections.
Tips and Best Practices
If an image is too large, resize it before compressing because smaller dimensions usually produce bigger savings than quality changes alone. JPEG and WebP usually compress photos well, while PNG is better for logos or transparent graphics. Avoid repeatedly re-saving the same image at low quality because every lossy pass can remove more detail.
Use the live comparison to check whether compression artifacts appear around edges, text, or flat color areas. If you notice visible banding or blockiness, raise the quality slightly and try again.
How to Use
Upload an image — Click the upload area or drag and drop an image from your computer. JPG, PNG, and WebP formats are supported.
Adjust quality — Use the quality slider to control compression. Higher values preserve more detail but result in larger files.
Compare and download — View the original and compressed versions side by side with file sizes shown. Click the Download button to save the compressed version.
How It Works
The tool loads your image onto an HTML5 Canvas and re-encodes it at the selected quality level. For JPEG and WebP, this uses lossy compression that reduces file size by discarding imperceptible detail. PNG compression is lossless but benefits from re-encoding efficiency. All processing runs locally in your browser — nothing is sent to any server.
Frequently Asked Questions
Does image compression reduce quality?
Compression reduces file size by removing or simplifying image data. The quality slider lets you control the trade-off: higher settings preserve more detail but yield larger files, while lower settings create smaller files with some visible quality loss.
What image formats are supported?
This tool supports JPG, PNG, and WebP formats. JPG is best for photos, PNG for images requiring transparency, and WebP offers modern compression with good quality at smaller sizes.
What is the best quality setting for web use?
For most web use, a quality setting of 70-80% offers a good balance between file size and visual quality. For PNG images, you can often reduce size significantly at 60-70% without noticeable quality loss.
Is my data safe?
Yes. All processing happens entirely in your browser using JavaScript. Your images never leave your device and are not sent to any server.
Do I need to create an account to use this tool?
No. All our tools are free to use and work directly in your browser without registration or sign-in. Just open the page and start using the tool.
Does this tool work on mobile devices?
Yes. The tool is fully responsive and works on any modern browser on iPhone, iPad, Android phones and tablets. The interface adapts to your screen size automatically.
Should I compress before or after resizing?
Resize first, then compress. Cutting the pixel dimensions lowers the amount of data the compressor has to process, which usually gives a much smaller result with less visible quality loss.
Why does my PNG not shrink much?
PNG is lossless, so it is best for transparency and sharp graphics but often cannot be reduced as aggressively as JPEG or WebP. Photos, screenshots, and image-heavy pages usually get better savings from WebP or JPEG than from PNG.