Image Compressor: How to Reduce JPG, PNG & WebP File Size Online
Large image files can slow down websites, take longer to upload and make email attachments heavier. An online image compressor can reduce image file size while keeping the result visually useful for everyday use.
Table of Contents
What Is Image Compression?
Image compression is the process of reducing the amount of data needed to store an image. The goal is usually to create a smaller file that is faster to upload, download, share or display.
Compression can be especially useful for website images, email attachments, online forms, social media uploads and devices with limited storage.
Why Compress Images?
You may want to reduce image file size when you need to:
- Make website pages load faster
- Reduce upload time
- Stay under file-size limits
- Send smaller email attachments
- Save storage space
- Prepare images for online forms or social platforms
How to Compress an Image Online
ConverterFox provides a browser-based image compressor that currently accepts JPG, JPEG, PNG and WebP image files.
- Open the ConverterFox Image Compressor.
- Select a JPG, PNG or WebP image.
- Choose a compression quality level.
- Click Compress Image.
- Review the compressed preview.
- Compare the original and compressed file sizes.
- Download the compressed image.
Compress an Image Online
Reduce JPG, PNG or WebP image file size directly in your browser with adjustable quality settings.
Open Image CompressorWhich Compression Quality Setting Should You Use?
The current ConverterFox Image Compressor includes four quality options. A higher setting generally prioritizes visual quality, while a lower setting aims for stronger size reduction.
High – 90%
Best when you want to keep more visual detail and only need moderate compression.
Balanced – 80%
A useful starting point for everyday websites, uploads and image sharing.
Smaller – 70%
Useful when reducing the file size matters more than preserving every detail.
Maximum Reduction – 60%
Designed for stronger compression when keeping the file as small as practical is the priority.
Compress JPG, PNG and WebP Images
JPG Image Compression
JPG is widely used for photographs and web images. Compressing JPG files can help reduce file size for faster uploads and lighter web pages, although stronger compression may reduce visual detail.
PNG Image Compression
PNG is often used for screenshots, graphics and sharp-edged images. The current ConverterFox tool accepts PNG input and processes it in the browser. Results can vary depending on the original PNG.
WebP Image Compression
WebP is a modern image format often used on websites. ConverterFox accepts WebP input, so it can also be used when you want to reduce the size of a WebP image before publishing or sharing it.
Browser-Based Image Compression and Privacy
The current ConverterFox Image Compressor is designed to process the selected image directly in your browser rather than sending it to a remote ConverterFox image-compression server.
This means the compression work happens locally in the browser during normal use of the tool.
Image Compression vs Image Resizing
Compression and resizing solve different problems. Compression focuses on reducing file size, while resizing changes the image's width and height in pixels.
If an image is much larger than you actually need, resizing it first and then compressing it can often produce a smaller, more web-friendly result.
Tips for Better Image Compression Results
- Keep a copy of the original image.
- Start with the Balanced 80% setting.
- Use High 90% when detail is important.
- Try 70% or 60% when file size is the main priority.
- Check the preview before downloading.
- Compare the original and compressed file sizes.
- Resize oversized images if the pixel dimensions are unnecessarily large.
Frequently Asked Questions
Is the ConverterFox Image Compressor free?
Yes. The current browser-based image compressor can be used free of charge.
Which image formats can I compress?
The current tool accepts JPG/JPEG, PNG and WebP images.
Will compression always make the image smaller?
Not necessarily. The result depends on the original file, image dimensions, format and how efficiently the source image was already encoded.
Will image compression reduce quality?
It can. Lower quality settings may produce stronger file-size reduction, so keep the original and compare the result before using the compressed version.
Are images uploaded to ConverterFox?
The current tool is designed to process images directly in your browser instead of sending them to a remote ConverterFox image-compression server.