Free Online Generators
Passwords, QR codes, UUIDs and barcodes generated by your own browser's crypto and canvas APIs. This is the only safe way to generate a password online: a server-side generator, by definition, has seen your password.
7 tools in this category · free · no signup · no watermarks
Generators
Generators (text)
Misc
How random is a browser-generated password?
Every password, token and UUID on this page is produced by crypto.getRandomValues, the browser's cryptographically secure random number generator. It draws entropy from the operating system — the same source that seeds TLS keys — rather than from Math.random, which is fast, predictable, and completely unsuitable for anything secret. A 16-character password drawn from a 94-character set has roughly 105 bits of entropy, which is far beyond what any offline cracking rig can exhaust.
Why a server-side generator is the wrong place to make a secret
A generator that runs on someone else's machine has, by construction, produced your password on hardware you do not control and transmitted it back to you over the network. Even with flawless intentions and TLS in transit, the secret existed somewhere else first. There is no way to audit what happened to it in between. A generator that runs in your browser never creates that window, which is why this is one of the few categories where client-side processing is not merely a privacy preference but a correctness requirement.
Choosing between a UUID, a ULID and a short ID
A UUID v4 is 122 random bits and is the right default when identifiers must never collide across systems. A ULID or a Snowflake-style ID embeds a timestamp, so identifiers sort chronologically — useful as a database key, and a small information leak if the ID is public. Short IDs trade collision resistance for readability and should be scoped to a single table or namespace rather than used globally.
Why these tools run in your browser
Most online tools work by uploading your file to a server, processing it there, and sending the result back. That means a copy of your document exists on a machine you do not control, governed by a retention policy you did not write. Filevane inverts that: the code is downloaded to you, and your file stays put. You can verify this yourself — open your browser's Network tab, run any tool on this page, and watch that no request carries your file.
No accounts, no limits, no watermarks
Because there is no server doing the work, there is no per-task cost to recover — so there is no daily task cap, no queue, no watermark on the output and no upgrade prompt. Batch sizes are limited only by your own device's memory.
Explore more
Browse the full catalogue of every Filevane tool, or read the guides for step-by-step walkthroughs.