Compress Image Online
Free, instant, and private. Up to 60% smaller files — no upload required.
Drop images here or click to browse
PNG, JPG, WebP, GIF, BMP, HEIC
What is image compression?
Image compression reduces the file size of a picture while keeping it as visually close to the original as possible. Instead of uploading files to a remote server and waiting for processing, Pixvert's image compressor runs the entire operation locally in your browser using the Canvas API, so images never leave your device.
Most image formats carry redundant data — extra color precision, uncompressed pixel blocks, or metadata you never look at. A good compressor identifies exactly how much of that can be discarded before the difference becomes visible.
Compressing images reduces page load times, saves storage space, and improves user experience. Our tool processes everything locally — your files never leave your browser. Whether you're preparing files for a website, an email, or cloud storage, compressing images first means faster uploads, less bandwidth used, and quicker load times for anyone who opens them.
How to compress images online
- 1
Upload your files — drop your images into the box above, or click to browse — batch uploads are supported
- 2
Click Compress All — compression runs instantly in your browser, no server round-trip involved
- 3
Compare the result — check the new file size next to the original before downloading
- 4
Download — save files individually or grab the whole batch at once as a ZIP
When to compress image files
Faster websites
Smaller image files mean quicker page loads, which improves both user experience and search ranking.
Email attachments
Fit photos under attachment size limits without switching to a file-sharing link.
Storage savings
Free up space on your device or cloud drive by shrinking image files you no longer need at full resolution.
Faster sharing
Send files over messaging apps or upload them to forms and marketplaces that enforce size limits.
Why use Pixvert to compress images?
- ✓100% local processing: compression happens entirely in your browser — files are never uploaded anywhere
- ✓Batch support: compress multiple files in one pass and download them together as a ZIP
- ✓No signup required: use the tool immediately without an account or email
- ✓Free, with no hidden limits: no watermarks, no forced quality caps
Frequently Asked Questions
Which image formats can I compress here?
JPG, PNG, WebP, AVIF, GIF, HEIC, BMP, and TIFF are all supported. The tool detects the format automatically and applies the right compression strategy.
Will compression change the format of my file?
No, by default the output keeps the same format as the input. If you want to change format as well as compress, use the Image Converter instead.
Is it safe to compress my images here?
Yes. Everything happens locally in your browser using the Canvas API — your files are never uploaded to a server.
Is there a file size limit?
There is no hard limit set by Pixvert, but very large files depend on your device’s available memory to process smoothly.
Can I compress multiple files at once?
Yes, drop several files at once and click Compress All — every file is processed and can be downloaded individually or as a ZIP.
Can I use the compressed images commercially?
Yes, Pixvert only reduces file size — it does not alter your rights over the image or add any watermark.