Compress Images Online
Compress JPG, PNG, WebP and AVIF images in your browser with a quality slider and optional resize. Batch up to 20 files - nothing is ever uploaded.
Drag anywhere on the image to draw a free crop. Drag again to replace the selection.
Turn output into a monitored workflow
A Novaverb workspace crawls your live site, verifies these tags and files are actually served, tracks changes over time, and turns findings into assigned work.
Image Compressor
This tool converts, compresses and resizes images entirely in your browser using the Canvas API - your files are never uploaded to a server. Drop up to 20 images, choose an output format, quality, or exact pixel size, then download each result.
Supported formats
JPG, PNG, WebP, GIF, BMP, AVIF and ICO input depends on browser decoding support. HEIC and TIFF are browser-dependent. PNG is the standards-defined fallback; JPG, WebP and AVIF appear only when this browser verifies exact encoding support.
Converter, Compressor & Resizer
- Converter: Change an image from one format to another.
- Compressor: Reduce file size by re-encoding and optionally limiting width.
- Resizer: Resize a batch to exact dimensions, fit inside a box, or edit a crop.
Image Compressor FAQ
Are my images uploaded to a server?
No. Image processing runs in this browser and the selected files are not uploaded to Novaverb.
Why can't the browser decode a selected file?
HEIC, TIFF, ICO and some newer formats depend on browser and operating-system decoding support. Unsupported files receive an error.
How many images can I process at once?
Up to 20 files, 50 MB per file and 250 MB per batch.
Is my data uploaded anywhere?
No. This generator runs fully client-side in your browser. Nothing you type is sent to a server, so it is safe to use on private content.
Is it really free?
Yes, with no account. A Novaverb workspace is only needed when you want to verify, monitor, and track these files on your live site over time.