# Tuul

> Free tools that convert and fix files right in your browser. Nothing is uploaded, so it's fast and your files stay private.

All tools run locally in the browser using WebAssembly. Files are never uploaded to a server, there is no account, and the tools are free.

## Video and CCTV tools

- [DAV to MP4 Converter](https://tuul.io/dav-to-mp4/): Turn Dahua CCTV recordings into MP4 files that play anywhere.

## Images tools

- [AVIF to JPG Converter](https://tuul.io/avif-to-jpg/): Convert AVIF images to JPG, many at once.
- [AVIF to PNG Converter](https://tuul.io/avif-to-png/): Convert AVIF images to PNG, many at once.
- [Bulk Image Resizer](https://tuul.io/bulk-image-resizer/): Resize hundreds of images to one size, percentage or aspect ratio at once.
- [JPG to PNG Converter](https://tuul.io/jpg-to-png/): Convert JPG images to PNG, many at once.
- [JPG to WebP Converter](https://tuul.io/jpg-to-webp/): Convert JPG images to WebP, many at once.
- [PNG to JPG Converter](https://tuul.io/png-to-jpg/): Convert PNG images to JPG, many at once.
- [PNG to WebP Converter](https://tuul.io/png-to-webp/): Convert PNG images to WebP, many at once.
- [EXIF Remover](https://tuul.io/exif-remover/): Remove GPS location and hidden metadata from photos, losslessly.
- [WebP to JPG Converter](https://tuul.io/webp-to-jpg/): Convert WebP images to JPG, many at once.
- [WebP to PNG Converter](https://tuul.io/webp-to-png/): Convert WebP images to PNG, many at once.

## Guides

- [What is a DAV file and how do you open it?](https://tuul.io/guides/what-is-a-dav-file/): DAV is the recording format of Dahua CCTV recorders. Here's what's inside a .dav file, why normal players can't open it, and three ways to watch it.

## Optional

- [Full text for AI assistants](https://tuul.io/llms-full.txt)
- [Privacy](https://tuul.io/privacy/)