Free Image Compression Tools Compress · Optimise · Resize
Compress JPG, PNG, WEBP and AVIF images directly in your browser. No signup, no watermark and no upload — your files stay on your device.
Featured compression tools
All toolsSmallest file across JPG, PNG and WEBP.
All-purpose compressor for any format.
Quick one-click compression with smart defaults.
Re-encode JPG photos at the right quality.
Shrink PNGs while keeping transparency.
Optimise PNGs for web and social.
Auto-tune quality to land under 100 KB.
Hit an exact upload-form size limit.
Attachment-friendly photos in one drop.
Multiple photos sized for Gmail and Outlook.
Choose the right compression tool
- ·Need Smallest possible file? Reduce Image Size
- ·Need JPG photos? Compress JPG
- ·Need PNG with transparency? PNG Compressor
- ·Need Flat PNG graphics? Compress PNG
- ·Need Email attachment? Make Photo Smaller for Email
- ·Need Exactly 100 KB? Compress JPG to 100KB
- ·Need Under 500 KB upload? Compress Under 500KB
Compression tool comparison
| Tool | Best for | Supports | Privacy |
|---|---|---|---|
| Reduce Image Size | Smallest file overall | JPG, PNG, WEBP | Runs in browser |
| Image Compressor | General-purpose batch | JPG, PNG, WEBP, AVIF | No upload |
| Compress JPG | Photographs | JPG / JPEG | No upload |
| PNG Compressor | Transparent images | PNG | No upload |
| Compress JPG to 100KB | ID, exam and form portals | JPG, PNG → JPG | No upload |
| Compress Under 500KB | Strict upload limits | JPG, PNG, WEBP | No upload |
| Make Photo Smaller for Email | Phone photos for email | JPG, PNG, HEIC → JPG | No upload |
Compress image
13Make image smaller
16Compress JPG
4Compress PNG
4Compress WEBP
1Compress AVIF
1Compress to target size
7Why use these tools?
- Smart defaults — large savings, almost no visible quality loss
- Hit exact targets: 100 KB, 200 KB, 500 KB, 1 MB and more
- Works on JPG, PNG, WEBP and AVIF
- Nothing uploaded — your files stay on your device
How it works
- 1Choose a compression tool (by format or target size)
- 2Drop one or many images into the page
- 3Download the smaller files — individually or as a ZIP
Frequently asked questions
What is the best way to compress an image?
For photographs, re-encoding to JPG or WEBP at quality 70–85 gives a 60–90% smaller file with no visible loss. For screenshots, logos and graphics with flat colour, use PNG or lossless WEBP. If you need an exact upload size, use a target-size tool such as Compress JPG to 100KB or Compress Image Under 500KB — they auto-tune quality for you.
Can I compress images without uploading?
Yes. Every compressor on ImageToAnything runs fully in your browser using WebAssembly and the Canvas API. Your files never leave your device, nothing is uploaded to a server, and nothing is logged. That makes it safe for ID scans, contracts and personal photos.
Should I use JPG, PNG or WEBP?
JPG is the universal choice for photos and the smallest at very high quality. PNG is best when you need transparency or pixel-perfect screenshots. WEBP gives the smallest file at the same visual quality and is supported by every modern browser — it is the best pick for websites and Instagram exports.
How do I compress an image for email?
Use the Make Photo Smaller for Email or Compress Image for Email tool — they aim for an attachment-friendly size (typically under 1 MB) and keep dimensions appropriate for inline viewing. Most email providers cap attachments at 20–25 MB total, so keeping each photo under 1 MB lets you send several at once.
How do I reduce an image to 100KB?
Open Compress JPG to 100KB, drop your file in, and the tool steps quality down until the output lands just under 100 KB. It works in the browser, supports JPG and PNG inputs, and is the right tool for government forms, exam portals and ID uploads.