// lab

Free Tools

Free tools and utilities built by MariVision. No sign-up required, no usage limits.

Mirror Photo

Fix flipped front-camera selfies and backwards text. iPhone HEIC included, everything runs in your browser.

Open for free

Extract Audio from Video

Drop in a video, trim up to 5 minutes and download the MP3. All in your browser, no upload.

Open for free

Image Converter

Convert PNG to JPEG or WebP. Control quality, cut file size, download instantly.

Open for free

Advanced Calculator

Scientific functions, mortgage calculator, conversions. A modern, complete interface.

Open for free

Font Inspirations

Over 100 fonts with interactive preview. Find the perfect pairing.

Open for free

Image Crop

Crop, resize and rotate your images. Instant download.

Open for free

Prompt Studio

Ready-made prompts for stunning AI images. Free LITE section + unlockable PRO section.

Open for free

QR Code Generator

Custom QR codes for links, text, WiFi, email. Custom colors.

Open for free

Color Extractor

Pull colors from any image. Color picker + automatic palette. Copy HEX and RGB.

Open for free

Hours of Life

How many minutes you've lived and how many you have left, in real time. Fun stats + a shareable image.

Open for free

Your Place in the Universe

Where Earth was in its orbit on the day you were born, how far it was from the Sun and which stars were shining above you.

Open for free

Birthday Time Machine

Your life year by year: what was playing, what was coming out and what was happening in the world at every milestone. A timeline to share.

Open for free

Electric Frame

Add an animated electric-energy frame to your photos and download the video. Style, colors and intensity your call, all in your browser.

Open for free
// frequently asked questions

Frequently asked questions

Are the tools really free?

Yes. All the tools on this page are free, with no sign-up and no usage limits. The only partial exception is the PRO section of Prompt Studio, which unlocks with a PIN: that's free too, and it comes via Instagram.

Are my photos and videos uploaded to a server?

No. The tools that work on files, namely Mirror Photo, Extract Audio from Video, Image Converter, Image Crop, Color Extractor and Electric Frame, process everything in your browser: your files stay on your device and never pass through any server.

Do they work on smartphones too?

Yes: they're web pages, so they work in the browser on computers, tablets and smartphones without installing anything. On older phones the heavier jobs, like extracting the audio from a large video, may take a few extra seconds.

Who built these tools?

They were built by MariVision, the studio of Alessandro Mari, a freelance developer in Bergamo. If your business needs a custom tool, management software or an automation, you can write to us from the Contact section of the site.