Reduce file size without uploading images
The Compressor optimizes JPG, PNG, WebP, AVIF, and other supported formats in the browser itself. Files stay on your device: choose output format, quality, and a size goal, inspect a real comparison, and export only an approved result.
How to use it
- Drag files in, choose them from your computer, or import a public URL.
- Select the full batch or a subset; global settings affect the batch and the editor allows per-file exceptions.
- Choose format, profile, quality, or target size and inspect the before/after preview.
- Process and download one file, selected files, a ZIP, or a folder when the browser supports it.
What the Compressor does
It re-encodes an image to reduce bytes while keeping width and height by default. A 4000 x 3000 photo stays at that resolution but may require far less storage. Once processed, the displayed file size, savings, format, and resolution are real output values.
- JPEG and WebP are usually best for photos and web imagery.
- PNG preserves transparency and crisp edges; palette reduction can shrink graphics but changes colors, so compare it.
- AVIF, JPEG XL, TIFF, BMP, and static GIF are compatibility choices; a newer format is not always smaller.
Quality, profiles, and target size
Quality balances detail and weight. Fast, Normal, and Maximum Quality use different processing strategies. Target size searches for a quality that fits the requested KB or MB without silently lowering resolution.
- Fast favors large batches and speed.
- Normal is the balanced starting point.
- Maximum Quality takes more care and may take longer.
- Keep original if larger prevents replacing an efficient file with a bigger result.
Preview, editor, and individual settings
Each thumbnail shows format, size, status, and an editor entry point. Compare with a draggable divider, side-by-side, or quick toggle. The editor lets you zoom, move between images, undo, and apply a setting to one file or the selection. Horizontal gallery, grid, and focus mode retain settings and selection.
- Use individual settings when one image needs a different treatment.
- An estimate is guidance; processed output is the export value.
- Brightness, contrast, saturation, denoise, and sharpening are optional pixel changes before compression.
Local AI, uses, and export
AI enhancement is optional and runs only with a locally installed model; always compare results, especially text, faces, and illustrations. Use the Compressor for email, catalogs, site uploads, sharing, and storage cleanup. Use the Resizer for dimensions, aspect ratio, or crop. Keep names, add suffixes or numbering, preview output names, and export ZIPs. Saving to a folder depends on browser support; normal download remains available. Processing is local and files are not sent to a server. Preserve animated GIFs with animation-compatible flows.
Frequently asked questions
Does compression reduce image dimensions?
Not by default. Compression reduces file size. Use Image Resizer to change width or height.
Which format should I choose for photos?
JPG and WebP are often good choices. Compare both when the destination supports WebP.
When should I use PNG?
Use PNG when you need transparency, crisp text, icons, or flat-color graphics.
Why did the image lose quality?
Quality may be too low for that image type. Raise it, choose another format, or avoid aggressive compression.
Can I compress multiple images at once?
Yes. Add a batch, test a configuration, then apply it to remaining or selected images.
Can a compressed file become larger?
Yes, when the original is already efficient or the selected format does not fit the image. Compare and keep the original when it is better.
