Free Online File Compressorfor Images, Videos & PDFs

Compress files directly in your browser. LessMB reduces JPG, PNG, GIF, WebP, AVIF, MP4, MOV and PDF file size with local processing and no server upload.

TypeAdd fileAdjustDownload

Drag your image here or click to compress

Compress JPG, PNG, GIF, WebP, AVIF, and JXL images in your browser.

Choose the right compression tool

Private image compression

Free Online Image Compressor

Reduce image file size for websites, email, stores, newsletters and forms. LessMB compresses supported image files on your device, so private photos and design assets do not need to leave your browser.

Open image compressor
Browser-based video compression

Free Online Video Compressor

Reduce video file size for sharing, upload limits, presentations and websites. LessMB runs video compression in your browser so clips do not need to be sent to a remote server.

Open video compressor
Local PDF compression

Free Online PDF Compressor

Reduce PDF file size for email, forms, reports and document portals. LessMB optimizes supported PDFs in the browser and keeps sensitive documents on your device.

Open pdf compressor
Private browser compression

Compress media and documents locally.

LessMB processes your file inside the current browser session, then creates an optimized download for sharing, publishing, email attachments and storage limits.

Local-first workflow

Pick a file type and keep control of the source file.

Images for publishing

Prepare JPG, PNG, GIF, WebP, AVIF and JXL assets for pages, stores, newsletters and forms without sending originals through a cloud queue.

Videos for sharing

Reduce screen recordings, short clips and presentation media when upload limits, storage quotas or messaging apps need a smaller MP4.

PDFs for upload limits

Shrink reports, scans and forms locally before sending them through email, school portals, business systems or shared drives.

Private by default

The compression work happens in your browser session, which keeps sensitive files on your device while you tune size and quality.

FAQ

Common questions

Quick answers about privacy, supported file types, and how LessMB handles compression in your browser.

No uploadNo sign-upLocal processing
Is LessMB free to use?

Yes. LessMB provides free browser-based compression tools for supported image, video and PDF files.

Are my files uploaded while compression runs?

No. Files are processed locally in the current browser session, which helps keep private photos, videos and documents on your device.

Which compressor should I choose?

Use the image compressor for JPG, PNG, GIF, WebP, AVIF and JXL files, the video compressor for MP4, MOV and WebM files, and the PDF compressor for documents.

Can every file become smaller?

No. Files that are already highly optimized may stay similar or become larger, so LessMB lets you compare results before using the output.