No — this is the whole point when you’re sharing rental documents. Your documents are opened, rendered with pdfjs, masked by flattening and merged with pdf-lib entirely on your device, with no server, no API and no CDN call for your files; the page even works offline once cached. Nothing is sent, logged or stored. That is exactly why you should never use a random online “merge documents” or “tenant KYC” site — those upload your ID, income and bank statements to a stranger’s server. Here, only the merged PDF or ZIP you choose to export leaves the page, and closing the tab discards everything.

A typical rental application needs a government photo ID (Aadhaar, passport or driving licence), a current address proof (a utility bill, bank statement or passport), proof of income covering the last two to three months (salary slips and bank statements for the salaried, or ITR / tax returns and a CA letter or business / GST proof for the self-employed), an employment or offer letter, a previous-landlord reference or your rental history, a passport-size photo and the completed rental application form. In India a police / tenant verification form is often mandatory. Students are usually asked for a college / institution ID and a guarantor or co-applicant with their own ID and income proof, and some landlords or agencies also request a credit report. The exact required documents, formats and order vary by landlord, broker, agency, city and country, so always follow what you’ve actually been asked for. This tool gives you a checklist per tenant type to organize against, but it is general guidance, not the landlord’s official list.

Yes. Many landlords and agencies prefer all your supporting documents in a single, ordered PDF. Upload your ID, address proof, salary slips, bank statements, employment letter, reference and verification form (images or PDFs), arrange them with the up/down arrows, set the tenant name and property / landlord, and export one merged PDF that starts with an auto-generated cover/index page listing every document. If a landlord instead wants each file separately, export the ZIP, which contains each document flattened (masks baked in) on its own. Both are built entirely in your browser, so nothing is uploaded.

It is good practice to share only what the landlord genuinely needs, and to be cautious about handing full ID proofs to unverified landlords or brokers, since oversharing rental documents is a common route to identity fraud. In this tool you draw black boxes over details you don’t need to disclose — a full bank-account number, your full Aadhaar / passport / ID number, a PAN, or the exact running balances on a bank statement when you only need to show that income is steady. The masking is real: each box is painted onto the page image and the PDF is rebuilt from those images, so the hidden content is physically gone with no recoverable text layer. But you place the boxes, so cover every detail you want hidden, zoom in to review each page before exporting, and never mask anything the landlord actually requires to see.