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File Size Reducer

Reduce File Size Online — Free, No Upload

Not sure which tool you need? Pick your file type below. Every tool compresses locally in your browser — nothing is ever uploaded, and there's no signup or watermark.

Image (JPG, PNG, WebP)

Photos, screenshots, scanned documents

PDF Document

Forms, resumes, reports, scanned PDFs

Video

MP4, MOV clips and recordings

Audio

MP3, WAV, voice recordings

Multiple Files (ZIP)

Bundle and shrink several files at once

How to Reduce File Size, Step by Step

Choose the tool for your file type above, drop the file in, and download the smaller version — everything runs in your browser, so nothing is uploaded and there's no signup.

1

Identify your file type

Image, PDF, video, or audio — each has a dedicated compressor tuned for that format.

2

Set a target (optional)

Most tools let you aim for an exact size in KB or MB, useful for upload limits on forms and portals.

3

Download instantly

Your smaller file saves directly to your device. No queues, no waiting on a server.

100% Private

Files are processed locally using WebAssembly and the Canvas API — never uploaded to a server.

Instant Results

No upload/download round-trip means compression finishes as fast as your device can run it.

Free, No Signup

No accounts, no watermarks, and no artificial limits pushing you toward a paid plan.

Frequently Asked Questions

Pick the tool that matches your file type above — image, PDF, video, or audio — and drop your file in. Each tool automatically re-encodes the file to shrink it while keeping it usable, and you can set an exact target size in KB or MB if you need to hit a specific limit.