Compress · Convert · Resize
Make your images smaller. Keep your workflow faster.
Compress, convert, and resize images with Pixnex. Supported images are processed directly in your browser, and optimized files are ready to download in moments.
JPG, PNG, WebP, AVIF, GIF, BMP · up to 20 MB each · 20 files max
Images are processed on your device in this browser tab. They are not uploaded to Pixnex servers.
Popular image tools
Image Compressor
Reduce JPG, PNG, WebP and AVIF file sizes with an adjustable quality slider. Runs in your browser — no upload required.
Image Converter
Convert images between WebP, AVIF, JPG and PNG directly in your browser. Batch-convert and download as ZIP.
Image Resizer
Resize images by exact pixel dimensions or percentage, with aspect-ratio lock and handy presets. Processed in your browser.
PNG to WebP
Convert PNG images to WebP for much smaller files, with transparency preserved. Free and processed in your browser.
Compress JPG
Reduce JPG and JPEG file sizes with adjustable quality. Free, fast and processed in your browser.
WebP to JPG
Convert WebP images to widely compatible JPG files. Free and processed locally in your browser.
How Pixnex works
- 1
Add images
Drag files onto the page or browse. Pixnex checks each file's real contents, not just its name.
- 2
Choose settings
Pick an output format, a quality level and an optional new size. Sensible defaults are pre-filled.
- 3
Download
Preview before and after, see the exact size difference, and download files one by one or as a ZIP.
Honest before-and-after
After processing, open Compare on any image to drag a slider between the original and the result. Sizes, dimensions and the exact percentage change are shown for every file — including when a file gets larger.
Processed on your device
The tools use your browser's built-in image decoders and encoders in a background worker. Your images aren't sent to Pixnex, which also keeps the service fast and inexpensive to run.
Supported formats
| Format | Open | Save as | Good for |
|---|---|---|---|
| JPG | Yes | Yes | Photos, universal support |
| PNG | Yes | Yes | Lossless, transparency |
| WebP | Yes | Yes | Small, modern, transparency |
| AVIF | Yes | Browser-dependent | Very small, slower to encode |
| GIF | Yes | No | First frame only |
| BMP | Yes | No | Converted to PNG by default |
Free and Pro
Free
No account needed
- ✓ Compress, convert and resize
- ✓ Up to 20 images per batch
- ✓ Files up to 20 MB
- ✓ Before-and-after comparison and ZIP download
Pro
For heavier workflows
- ✓ Up to 100 images per batch
- ✓ Files up to 75 MB
- ✓ Higher resolution limits
- ✓ API access when it launches
Frequently asked questions
Are my images uploaded to a server?
Not for the tools on this site. Images are decoded, processed and re-encoded inside your browser tab. If we ever add a feature that needs server processing, it will be clearly labelled.
Is Pixnex free?
Yes. The free plan covers compression, conversion, resizing and batches of up to 20 images, with no account required.
Why is my output file bigger than the original?
Some images are already highly optimized. Re-encoding at high quality or converting to a lossless format can increase size. Pixnex always shows the real result so you can choose a different setting or keep the original.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Creating AVIF files depends on your browser having an AVIF encoder; if it doesn't, the option is disabled.
Ready to lighten your images?
No sign-up needed. Drop your images in and get optimized files in moments.
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