Image Tools
Free Online Image Compressor
Drop an image below to shrink its file size in seconds. Everything runs locally in your browser — nothing is uploaded anywhere.
Click to upload or drag and drop
JPG, PNG or WebP
How to compress an image online
- Click the upload area (or drag and drop) to select a JPG, PNG or WebP image.
- Adjust the quality slider — lower values create smaller files with more compression.
- Choose an output format, then click "Compress image".
- Compare the before/after preview and file sizes, then download the compressed image.
Example
A 4 MB PNG screenshot compressed at 70% quality and exported as JPG typically shrinks to a few hundred kilobytes — small enough to attach to an email or upload to a website without a noticeable drop in visual quality.
Why compress images online?
Large images slow down websites, bloat email attachments, and eat into storage limits. Compressing an image reduces its file size — often dramatically — while keeping it visually close to the original, which is especially useful before uploading photos to a website, CMS, or online form.
Processed entirely on your device
This tool uses your browser's built-in Canvas API to re-encode the image at a lower quality setting. Because the compression happens locally, your photos are never uploaded to a server, making this a private way to shrink personal or sensitive images.
Frequently asked questions
No. Compression happens locally in your browser using the HTML5 Canvas API. Your image never leaves your device.
You can compress JPG, PNG and WebP images, and choose to export as JPG, WebP or PNG.
Some quality loss is expected with lossy compression. Use the quality slider to balance file size against visual quality.
Very large images may be slow to process depending on your device, but there is no artificial upload limit since files are never sent to a server.