Image Compressor
Compress and resize images instantly in your browser. Adjust quality, convert formats, and download optimized images — no upload required.
Drag & drop an image here
or click to browse — supports PNG, JPG, WebP
Features
Client-Side Processing
All compression happens in your browser using the Canvas API. No uploads needed.
Quality Control
Fine-tune compression quality from 1 to 100 with a smooth slider.
Format Conversion
Convert between JPEG, PNG, and WebP formats with a single click.
Smart Resizing
Set max dimensions and maintain aspect ratio automatically.
Before & After
Side-by-side comparison of original and compressed images with file size details.
Drag & Drop
Drop images directly onto the page or click to browse your files.
Compress Images Online — Fast, Free, and Private
Large image files slow down websites, increase bandwidth costs, and frustrate users. Our free Image Compressor lets you reduce file sizes dramatically without needing to install software or upload files to a server. Using the browser's built-in Canvas API, it processes your images locally and delivers optimized results in seconds.
Choose your output format — JPEG for photographs, PNG for graphics with transparency, or WebP for the best compression ratios with modern browser support. Adjust the quality slider to find the perfect balance between file size and visual fidelity. Need smaller dimensions? Set a maximum width or height and the tool maintains the aspect ratio automatically.
Privacy matters. Unlike many online image compressors, your files never leave your device. Everything from decoding to re-encoding happens right in your browser. This makes our tool ideal for compressing sensitive images, screenshots, or any content you would rather not upload to a third-party server.
Frequently Asked Questions
Is this image compressor really free?▾
Yes, completely free with no limits on the number of images you can compress. There is no registration required and no watermarks added to your images.
Are my images uploaded to a server?▾
No. All image processing happens entirely in your browser using the Canvas API. Your images are never uploaded, stored, or transmitted to any server.
What is the difference between JPEG, PNG, and WebP?▾
JPEG is best for photographs with smooth color gradients and offers good compression. PNG supports transparency and is ideal for graphics, logos, and screenshots. WebP provides superior compression for both photos and graphics with smaller file sizes, supported by all modern browsers.
How much can I reduce my image file size?▾
It depends on the original image and settings. JPEG compression at 80% quality typically reduces file size by 50-80%. Converting PNG photos to WebP can achieve even greater reductions. The compression ratio is shown after processing.
Does resizing affect image quality?▾
Downscaling (making smaller) generally maintains good quality. The tool uses the browser's built-in image scaling which applies bilinear interpolation. For best results, avoid upscaling beyond the original dimensions.
Want to learn more about image optimization?
Read our guides on compression basics, web optimization, and format comparison.
Read the Blog