Image Compressor

Compress and reduce image file size while maintaining quality.

Drop image here or click to upload

or click to browse — PNG, JPG, WebP, GIF

What is this tool? Image Compressor?

Large images slow down websites and consume unnecessary storage. This tool compresses images directly in your browser, reducing file size by up to 80% while preserving as much visual quality as possible, no uploading to a server required.

How do you use this tool? Image Compressor

Click the upload area or drag and drop your image onto it.
Use the quality slider to choose a compression level (1,100%). 70,85% is usually the sweet spot.
Optionally set a maximum width or height to also resize the image.
Select the output format (JPEG, PNG, or WebP), then click Compress and download the result.

Common Use Cases

Speed up web pages

Reduce hero images, product photos, and article media so pages download faster and consume less mobile data.

Meet upload limits

Shrink images before attaching them to forms, learning platforms, support tickets, or messaging services with file-size caps.

Optimise email attachments

Compress screenshots and photos so messages send reliably without forcing recipients to download unnecessarily large files.

Prepare image collections

Reduce storage and transfer costs for galleries, archives, or content batches while retaining acceptable visual quality.

Why is this tool useful?

Visible size savings

Compare the original and compressed file sizes before download, making the quality-versus-size tradeoff easier to judge.

Adjustable quality

Tune compression instead of accepting a fixed preset that may be too aggressive for text or too conservative for photographs.

Browser-based workflow

Process private screenshots or internal images locally when the implementation supports client-side encoding.

Best Practices

✓ Resize oversized images before compressing them. A 4000 px photo displayed at 800 px wastes more bytes than necessary even at a low quality setting.
✓ Inspect text, faces, gradients, and sharp edges at 100% zoom, because compression artefacts appear there before they are obvious in a small preview.
✓ Use moderate quality for the first export, then lower it gradually. Recompressing an already compressed result compounds quality loss.
✓ Choose a format suited to the image, JPEG or WebP for photographs, PNG for transparency and crisp interface graphics, SVG for vectors.
✓ Keep the original master file and treat the compressed image as a delivery copy.

Practical examples

Reduce a camera photo for a website

Input

4032×3024 JPEG, 4.8 MB, quality set to 75.

Output

A new JPEG with the same pixel dimensions and a lower file size. The exact size depends on image detail, noise, and the browser encoder.

Compress a screenshot without resizing it

Input

1920×1080 PNG screenshot, compression enabled, dimensions unchanged.

Output

A smaller image when the content compresses well. Screenshots with flat colors usually benefit more than noisy photographs saved as PNG.

Frequently Asked Questions

WebP typically achieves the best compression with excellent quality, followed by JPEG. Use PNG only when you need transparency or lossless quality, as it produces larger files.

For web images, 75,85% quality is usually ideal, it produces a significant file size reduction with barely noticeable quality loss. Go lower (50,70%) for thumbnails or background images.

No, unless you explicitly set a max width or height. Compression only reduces file size. Use the resize inputs if you also want to change dimensions.

Yes. Images are processed entirely in your browser using the Canvas API. No data is ever uploaded to a server.

No. The tool creates a new result in the browser. Your original remains unchanged unless you overwrite it after downloading.

The tool does not add ownership restrictions to your output. You remain responsible for rights to the source material and for complying with third party licenses.

Images