Guides
Guides
Guides pratiques pour manipuler vos fichiers en toute sécurité dans votre navigateur. Chaque article renvoie directement à l'outil correspondant.
How to Create a QR Code That Never Expires (Free, Print-Ready)
Turn a link or text into a QR code. It's a static QR — the content lives in the code itself — so it never expires, and what you type is never sent to a server.
How to Merge Audio Files into One — Even with Mixed Formats
Join split voice memos or lecture recordings into a single MP3, in the order you choose. Mixed formats and sample rates are matched automatically, inside your browser.
How to Add Background Music to a Video — Loop, Volume, Fade
Lay music over a silent vlog or timelapse. Short tracks loop automatically to fill the video, and you choose whether to mix with or replace the original sound.
How to Trim a Video — Keep Just the Part You Need (No Quality Loss, Seconds)
Cut the section you need out of a long video. 'Fast' finishes in seconds with zero quality loss; 'Precise' cuts frame-accurately. The video never leaves your device.
How to Find & Replace Text Across Word, PowerPoint and Excel — Formatting Intact
Swap names, dates and old brand names across a whole document in one pass. Only the text changes — fonts, tables and layout stay exactly as they were.
How to Unzip and Zip Files — No Software to Install
Open a ZIP you received right in the browser, or bundle several files into one — especially handy on locked-down work PCs where installing software isn't an option.
How to Generate a Strong Password — Stop Memorizing, Start Generating
How to create passwords that resist guessing, and why it works. Generated with cryptographic randomness, never stored or transmitted anywhere.
How to Reduce Video File Size — Even to an Exact 25MB (In Your Browser)
Practical ways to shrink large videos that keep hitting messenger, email, and upload limits — re-encoded inside your browser, with an honest note on big files.