Does this work on mobile devices?

Yes, it works perfectly on mobile devices including iPhones and Android phones. You can compress images directly from your phone's gallery.

Can I compress multiple images at once?

Currently, you can compress one image at a time. Simply repeat the process for additional images.

Is there a file size limit for uploading?

Very large images may take longer to process depending on your device. If possible, try smaller files first.

Compress Image - Online Image Compressor

Your image is processed entirely in your browser. No files are uploaded to our servers.

How to reduce image file size (no install) When an upload fails due to size limits or email attachments bounce, compressing the image is the quickest fix. This tool runs in your browser and lets you save a smaller file fast. Useful for office work, freelancing, and online sellers. Useful when: • upload size limits • email attachments • faster sharing

Reduce image file size and compress to a target KB/MB range. Useful for email, uploads, and storage.

Show detailed guide & explanations▼

Why you may need this tool

Image uploads often fail because of file size limits in portals, email attachments, and messaging apps. High - resolution photos can exceed limits quickly. Simply resizing too aggressively can hurt readability or visual quality, so compressing toward a target size is a more controlled approach. Compression is a practical way to meet constraints while keeping images usable for their intended purpose.

How to use

Upload the image, set a target size or quality, compress, and then check key details (text, edges, faces) for clarity.

Upload your image (JPG, PNG, or WebP)
Set target file size (e.g., 100KB, 500KB, 1MB) or quality level
Click 'Compress' to reduce file size
Download your compressed image

Examples

Meeting a strict upload limit (e.g., 1MB)

Some portals enforce a maximum size per image. Compressing to a target helps you fit the limit while keeping important text and details readable.

Sending photos via email without attachment rejection

Emails often reject large attachments. Compressing images reduces friction and avoids last - minute file transfers through alternative channels.

Benefits & differentiators

Reducing file size improves upload success and speeds up sharing. It also helps websites and documents load faster when images are embedded. Target - based compression is useful because it gives you predictable outcomes: you can adjust quality gradually until you meet the limit without unnecessary degradation.

Who this is for

Recommended if you: - frequently hit upload size limits - share high - resolution photos through email or chat - need faster load times for embedded images - want predictable size reduction with quality checks