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Compress Images Online

Compress JPEG, PNG, WebP, BMP, or TIFF images to reduce file size. Process up to 10 files totaling no more than 256 MB. No registration required.

Technical content edited by Tools.4PDF.Net • Updated September 8, 2026

Drop files here

Up to 10 files · up to 256 MB

Choose filesFiles are protected and deleted automatically

Guide

How to use Compress image

Three steps from the source document to the result you need.

1
Select one or more images
Select the right task for your document.
2
Select compression level
Drop files or select them directly from your device.
3
Download optimized images
Track progress and download your file when it is ready.

Fast and direct

No account, no installation and no unnecessary steps.

Private workspace

Only this session can access your files.

Automatic deletion

Input files and results expire after one hour.

Learn about this tool

What is online image compression?

The online image compression tool re-encodes JPEG, PNG, WebP, BMP, or TIFF to reduce file size. You choose the Light, Balanced, or Strong setting; the stronger setting produces JPEGs at lower DPI. Each session allows up to 10 images with a total size of 256 MB. If compressing multiple images, the results are returned in a ZIP file.

This process may result in data loss because images are rasterized again. You should zoom in to check small text, interface images, and scanned documents. The alpha layer of a transparent PNG is not preserved.

When should you use it?

Reduce images before sending email

Compress phone JPEGs to attach without exceeding mailbox limits.

Prepare web illustration images

Create a lighter JPEG version from PNG or BMP exported from the design.

Downsize scanned image batch

Compress multiple receipt images before merging into PDF.

Practical tips

Tips for using Compress image

Try Balanced first. Strong compression can make text look jagged.
The output is JPEG, so text-heavy PNG graphics may look less sharp.
Keep the original; repeated compression quickly reduces quality.
If you want a lightweight PDF, compress images and then use JPG to PDF, or compress the PDF afterwards.
Each job accepts up to 10 files, with a total size limit of 256 MB.

Each job uses a separate anonymous session. Learn how we handle data in our Privacy and Security.

Frequently asked questions

Questions about Compress image

Does PNG remain PNG after compression?

The process of re-encoding images through PDF then exporting JPEG. The result is a JPEG image or a ZIP file containing JPEGs, not PNG optimized in lossless compression style.

How does the compression level affect images?

Higher compression uses lower DPI when rendering again. The image size decreases but small details are also lost. The tool does not allow setting the target size in kilobytes.

How many images can I compress?

Maximum 10 files, total 256 MB at a time.

How long are files stored?

Access expires after one hour and cleanup runs every five minutes. Download any results you need before they expire.

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