What is an Image Compressor?
An image compressor reduces a photo's file size — often dramatically — by re-encoding it at a lower quality setting, without changing its pixel dimensions. It's the tool to reach for before uploading photos to a website, attaching them to an email, or submitting them to a form with a strict size limit. Our compressor works with JPG, PNG, WEBP and more, runs entirely on our own servers, and supports batches of up to 20 images at once.
How to Compress an Image Online — Step by Step
- Upload your images. Drag and drop one or more images into the box above, or click to browse.
- Adjust the quality slider. Watch the live estimated size next to each file update as you move the slider.
- Compress and download. Click "Compress" — download files individually, or all at once as a ZIP.
Why Use Our Image Compressor?
- Batch support — compress up to 20 images in one go, each with its own progress and result.
- Live estimated size preview while you adjust the quality slider, before you commit.
- Download individually or all at once as a ZIP.
- Private — files are automatically deleted within 2 hours.
- Free, with no signup required.
Frequently Asked Questions
What image formats are supported?▾
JPG, JPEG, PNG, and WEBP output, from most common image input formats. The output format matches your input automatically on this page — use the dedicated Compress JPG/PNG/WEBP pages to force a specific output format.
How accurate is the "Estimated" size shown while I move the slider?▾
It's a close approximation based on typical compression behavior, not a measurement — actual results depend on your image's content. The real size is measured the instant you click Compress.
Can I compress multiple images at once?▾
Yes — add up to 20 images at a time, each compressed independently with its own quality result, then download them individually or together as a ZIP.
Will compressing reduce image quality?▾
Some quality loss is expected — that's how compression reduces file size, and you control the trade-off with the slider.
Do you keep my images afterward?▾
No — uploaded and compressed files are automatically deleted within 2 hours.
Related Tools
- Compress JPG — Shrink JPG file size online.
- Compress PNG — Shrink PNG file size online.
- Compress JPEG — Shrink JPEG file size online.
- Compress WEBP — Shrink WEBP file size online.
- Compress HEIC — Shrink HEIC file size online.
- Compress BMP — Shrink BMP file size online.