Learn
How it actually works.
Every family here works a specific, checkable way — not “processed securely,” but the actual codec, the actual file format, the actual API. Pick one.
What is actually inside the square.
A QR code is not a picture of a link. It is text, encoded into a grid with enough redundancy to survive being crumpled, badly lit, and photographed at an angle. Here is how that works, and what each type of code really contains.
How QR works →What actually happens to your photo.
Compressing, resizing or cleaning up a photo usually means uploading it somewhere first. Here it does not. Here is the actual mechanism — decode, edit, re-encode — and what it guarantees.
How Image works →What actually happens to your document.
Merging, splitting or watermarking a PDF usually means uploading a contract, an invoice or an ID scan to a site whose business model you have never examined. Here it does not — and the structural approach that makes that possible also produces a better file.
How PDF works →Where the note actually lives.
There is no database behind the shareable note, and no account. The note is the mechanism: it lives entirely inside the link you share. Here is exactly how that works.
How Note works →Why it is safe to paste a real secret here.
Developer tools are where secrets get pasted — an access token into a JWT decoder, a webhook signing key into an HMAC generator. Here is exactly what happens to them, mechanism by mechanism, so that claim is checkable rather than a promise.
How Dev works →