Convert, resize & create without the upload.

01 · Choose

Pick a tool

A file to convert, an image to resize, or a prompt to generate from.

02 · Process

Runs locally

Video/audio and image tools run on-device via WebAssembly and Canvas — no upload.

03 · Download

Save the result

Straight from your browser. No queue, no email, no watermark.

↺ conversion and resizing start and end on your device — they never go anywhere in between

#### Private by design

Conversion and resizing happen in your browser, never uploaded.

#### No account needed

No sign-up, no email, no login wall for the converters.

#### Free, no watermark

Your files are yours, unmarked and unlimited.

#### Three tools in one

Converter, image editor, and AI generator on one page.

Supported formats

Video & audio

MP4MOVWebMMKVGIF MP3WAVOGGFLACAACM4A

Images

JPGPNGWebP

Frequently asked questions

Is ConvertLocal really free? +

Yes — no sign-up, and no watermark on what you convert or resize.

Do you store or see my files? +

No. The converter and image tools run inside your browser using WebAssembly and Canvas. Your file is never uploaded to a server.

What formats are supported? +

Video: MP4, MOV, WebM, MKV, and GIF. Audio: MP3, WAV, OGG, FLAC, AAC, and M4A. Images: JPG, PNG, and WebP.

Can I resize or convert images too? +

Yes — the Image Tools tab resizes, compresses, and converts between JPG, PNG, and WebP, entirely in your browser.

How does the AI image generator work? +

It sends your prompt to an image generation API and returns a picture — no sign-up needed. Free anonymous use is limited to roughly one image every 15 seconds; that's a limit set by the image API itself, not this site.

Is there a file size limit? +

No hard limit, but since your device does the work, very large files will simply take longer.