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Image Compressor Online

Drop images or folders here, or , or click to choose
Choose Images
JPEG, PNG, WebP, AVIF, SVG & more

Compress images online for free without uploading them. Add one image or a whole folder, choose quality or a target file size, then download smaller JPEG, PNG, WebP, or AVIF files.

Try a demo image

Open one to explore the editor before adding your own files.

Preview image compression results before export

Check image quality and file size in your browser before export. Set a maximum size per JPEG, WebP or AVIF image, then apply the same goal to a complete queue.

Vicoco workspace showing a before-and-after photograph comparison with WebP settings
Red panda photograph ready for batch image compression

Compress one image or a whole folder

Choose the output format, quality or target file size once, then download one optimized image or process every queued file together as a ZIP.

Queue
Add multiple images to one local queue.
Tune
Compare codecs, dimensions and file size, or automatically find the best quality under a size limit.
Export
Apply the current settings to every image and download the results as a ZIP.

Convert images to JPEG, PNG, WebP or AVIF

Compare output formats by image quality, transparency support and file size before downloading the result.

Red panda photograph for JPEG compression

JPEG

Compress photographs with adjustable lossy encoding.

Graphic sample for PNG compression

PNG

Optimize lossless graphics while preserving transparency.

Device screen sample for WebP conversion

WebP

Convert images to WebP for smaller web-ready files.

Artwork sample for AVIF conversion

AVIF

Convert images to AVIF for high-efficiency compression.

Compare image quality and file size side by side

Use the before-and-after preview to inspect detail, test codec, quality or target-size settings, and check the compressed file size before export.

Vicoco workspace showing a before-and-after photograph comparison with WebP settings
InspectUse the divider to check visible detail.AdjustTest quality, resize and codec settings.ExportKeep the result only when it is ready.

Private image compression in your browser

Compress and convert images locally without uploading files to a server. Your images stay on your device from start to finish.

  1. 01
    Processed locally

    Compression runs inside your browser.

  2. 02
    No server uploads

    Your source images never leave your device.

  3. 03
    No account required

    Start compressing images without signing in.

FAQs

01How do I compress an image online for free?

Add an image, choose an output format and either set quality manually or enter a target file size, then preview and download the result.

02Can I compress several images at once?

Yes. Add multiple images or a folder, tune one result, then apply those settings to the queue and download a ZIP.

03Which image formats can I compress and convert?

You can add common formats including JPEG, PNG, WebP, AVIF and SVG, then choose a supported output codec for the batch.

04Are my images uploaded to a server?

No. Image processing runs locally in your browser, so your files stay on your device.

05Will compressing an image reduce its quality?

You control the quality level and can compare the compressed result with the original before downloading it.

06Can I resize images while compressing them?

Yes. Set the target width and height, preview the result, then apply the resize settings to one image or the full queue.

07Can I compress an image to a specific file size?

Yes. For JPEG, WebP and AVIF output, enter a maximum size per image. Vicoco finds the highest quality result under that limit and can resize the image when permitted.