Add or remove password protection on PDFs — encrypt, decrypt, auto-crack weak passwords. 100% browser-based
This tool can instantly remove owner-password (permission) restrictions and auto-crack weak user passwords. Strong user passwords cannot be cracked in the browser. Output is image-based. Only use on PDFs you own or have authorization to modify. All processing happens in your browser.
A protected PDF can carry two independent passwords. The user password gates who may open the file; the owner password (often hidden) gates permissions like printing, copying and editing. Removing owner restrictions is instant — this tool re-saves the PDF without them.
A weak user password (short, numeric, in a common dictionary) can be cracked in your browser by brute force. A strong one (e.g. 'Tr0ub4dor&3!') is effectively uncrackable here — only the legitimate owner should unlock those.
Being honest about limits builds trust. Here is the real capability map.
To remove a PDF password: open your file with the password, and the tool creates a new unlocked copy — all in your browser, nothing uploaded.
FreeToolHub PDF Unlock is a free browser-based tool that removes PDF passwords locally, no signup, no upload.
Añade protección con contraseña a PDF o elimina contraseñas y restricciones. Cifrado, descifrado y auto-descifrado de contraseñas débiles. 100% en el navegador. Gratis, sin registro.
Esta herramienta elimina la contraseña de apertura de un PDF protegido, así que puedes abrirlo y trabajar con él sin tener que conseguir la clave. También retira las restricciones de permisos que impiden imprimir, copiar texto o extraer páginas, que son un nivel distinto de protección: el archivo sigue exigiendo contraseña para abrirse, pero una vez dentro puedes hacer con él lo que quieras. Todo el proceso ocurre en tu navegador mediante JavaScript y WebAssembly; ningún archivo se sube a ningún servidor. Es la alternativa privada a los servicios que te piden subir el documento y guardan una copia.
Quien recibió un PDF que no puede abrir y que sin embargo tiene derecho a leer: un informe de tu propio banco, la factura de tu proveedor, el contrato que ya firmaste. Estudiantes con materiales cuyo botón de copiar está deshabilitado por DRM y que necesitan citar el texto. Diseñadores y agentes que deben extraer contenido de un PDF de cliente para trabajar con él. Y cualquier persona que prefiera no subir documentos confidenciales a un servicio de terceros solo para quitarles una contraseña.
It depends on your relationship to the document and local law. Removing restrictions from files you own, received legitimately, or need to access for accessibility reasons is generally lawful; circumventing protection on someone else's confidential or copyrighted document generally is not. Common legitimate cases: a former employer's HR portal gave you a password-protected copy of your own contract, or a printer refuses restricted files you have rights to. Only process documents you have the right to modify.
A user password (open password) is required to view the file at all; an owner password (permissions password) only restricts actions like printing, copying, or editing on an otherwise openable file. Unlocking with the correct password works for both types. Owner restrictions on an openable file can be lifted without knowing the password — the tool handles that case too. Everything happens locally; your file and password never leave the device.
If you know the password partially or it is weak, the recovery mode tries candidates locally: dictionary attacks against common passwords and configurable brute-force patterns (length ranges, character sets, known prefixes). Recovery speed depends on your device — strong random passwords of 12+ characters are computationally infeasible, which is by design. Recovery is for your own forgotten passwords, not for breaking into documents.
Yes, for owner-password restrictions: if a PDF opens normally but blocks printing or copying, those permission flags can be cleared by rebuilding the document without the restrictions — no password needed. User-password-protected files (the kind that ask for a password to open) always require either the correct password or successful recovery. The tool tells you which type it detected after you load the file.
Yes. Unlike cloud-based unlockers such as Smallpdf or iLovePDF that upload your file to remote servers, this tool processes the PDF entirely in your browser using client-side decryption. Your document never leaves your device, making it suitable for confidential legal, financial, or medical files.
You must know the current open-password to decrypt the file. Once you enter it, the tool strips the password protection and outputs a clean PDF that opens without credentials. It cannot crack unknown passwords—it removes protection from files you are already authorized to open.
It removes both user passwords (required to open the file) and owner passwords (which restrict printing, copying text, or editing). The output PDF has no usage restrictions, so you can print, copy, and edit freely in any reader like Adobe Acrobat or Preview.
What do you call a really smart cookie?
No signups, no data sold. Every tool is free to use — the free tier allows 5 downloads or saves per day, and the optional Pro plan ($7/mo, $59/yr) adds unlimited downloads, batch processing, white-label exports and an ad-free experience.
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