# Your files never leave your device

> Free tools for creators that run entirely in your browser: convert and compress files, build long music mixes, check loudness, make GIFs and more. Nothing is uploaded, no account needed.

Free tools for creators that do all their work inside your browser. Nothing is uploaded, there's no account, and they keep working on older computers and phones. Made for our own music channels first, so every tool solves a job we do every week.

Canonical URL: https://tools.chabulab.com/

## Audio

Mixes, loudness and lyrics, measured the way streaming platforms measure them.

- **Long Mix Builder** (In development): Turn a folder of tracks into a seamless mix hours long, ready to upload. Smooth crossfades, loops and reshuffles; Rain, vinyl and café ambience; Optional binaural layer; Loudness-matched MP3, AAC, FLAC or WAV.
- **Loudness Checker** (Planned): See how loud a track really is, and fix it for each platform. LUFS and true peak, like the platforms measure; Targets for YouTube, Spotify and more; One-click normalize.
- **Timed Lyrics Maker** (Planned): Sync lyrics to a song line by line, then export them for a lyric video. Tap along to set each line; Exports for lyric videos and GIFs.

## Images and video

Convert, compress and create, with your device's own hardware doing the work.

- [File Converter](https://tools.chabulab.com/convert/) (Live): Convert, compress and resize images and video, right in your browser. HEIC, WebP, AVIF, JPG, PNG and more; Images to PDF and PDF to images; Crop and watermark; Batch rename with saved recipes.
- **GIF Maker** (In development): Make a GIF from images or a video clip, edit it, and shrink it to size. Trim, crop and reorder frames; Compress to a target file size; Split a GIF into frames.
- [Quick Mosaic](https://tools.chabulab.com/mosaic/) (Live): Turn a photo into a stone, glass-tile or stained-glass mosaic, sharp enough to print. Six looks: stone, smalti, tiles, pool glass, broken glass, stained glass; Move the light, see it on your wall; Print-size export, works on older phones too.
- **Text to Infographic** (In development): Type or paste your points and pick from many infographic layouts. Many layouts and charts; Save, reopen and export.

## Measure and draw

Instruments for your screen, true to size once you calibrate it with a card.

- [Ruler & Protractor](https://tools.chabulab.com/ruler) (Live): A true-size ruler and protractor on any screen: calibrate once with a bank card, then measure. Centimetres, millimetres and inches; Calibrate with any bank card or ID card; Protractor with two arms and exact angles; Lock it so nothing on the screen moves it.

## For YouTube

The small jobs around every upload: the thumbnail check and the description.

- **Thumbnail & Title Preview** (Planned): See your thumbnail and title the way YouTube will show them, at every size. Home, search, sidebar and phone sizes; Light and dark mode.
- **Chapters Generator** (Planned): Paste a tracklist and get YouTube chapters with correct timestamps. Checks YouTube's chapter rules; Cue sheets too.

## Tools that hand off to each other

Each tool reads the others' exports, so a finished mix goes straight into a loudness check and then into chapter timestamps.

- Long Mix Builder → Loudness Checker → Chapters Generator → Your upload
- Timed Lyrics Maker → GIF Maker → Lyric video or GIF

Made by [ChabuLab](https://chabulab.com/).