BlackoutPDF

What it does

Most "free" PDF tools make you upload the file you're trying to protect — and "redact" with a box over text you can still copy out. BlackoutPDF runs 100% in your browser (turn off Wi-Fi — it still works), and redaction is destructive: the text is rebuilt into pixels, gone for good, metadata stripped. Redact, sign, merge, compress, convert. On-device OCR for scans. No account.

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