Image Compressor
Compress images individually or in batch with adjustable quality, output format and ZIP download — entirely in your browser.
ℹ️ About Image Compressor
Image Compressor reduces the file size of JPG, PNG and WebP images by re-encoding them at a lower quality setting, directly inside your browser using the Canvas API. As you move the quality slider, a live preview shows the resulting file size in real time, so you can find the right balance between visual quality and file size before committing to a download. This is useful for speeding up a website, fitting an email attachment limit, or simply saving storage space. Because the compression happens locally on your device, your photos are never sent to a remote server.
🛠️ How to Use Image Compressor
Upload an image, then drag the quality slider — the live preview above updates instantly and shows the approximate resulting file size in KB as you move it. Choose an output format if you want to switch between JPG, PNG or WebP. Once you're happy with the size-versus-quality trade-off shown in the preview, click Download to save the compressed file to your device.
📥 Input → ⚙️ Process → 📤 Result
Input
An image file
Process
Compresses or reduces image data according to the available quality and size controls.
Result
A smaller image file you can download.
❓ Frequently Asked Questions
Is Image Compressor really free?
Yes. The tool is available without a required account, watermark or paid conversion step.
Are my files uploaded?
No. ToolBoxly is designed to process supported files locally in your browser. Your source file is not uploaded to a ToolBoxly processing server.
Can I use the result commercially?
Yes, the tool itself does not claim ownership of your source files or generated output. You remain responsible for having the necessary rights to the material you process.
Why might a result look different?
Export settings, source format, browser capabilities and the type of content can affect the final file. Review the output before replacing the original.
Does it work on mobile?
Yes. The interface is responsive and works in modern mobile browsers, although very large files may be limited by device memory.
Search use cases
This browser-based tool is useful for website images, email attachments, ecommerce product photos and storage optimization. Choose the right output settings for your specific requirement and review the result before replacing your original file. ToolBoxly focuses on simple, fast utility workflows without a required account.