Convert PDF to image-based PDF. Flatten layers and remove selectable text.
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One or more PDF files
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A PDF is a set of instructions: draw this glyph here, fill that rectangle there. Rasterizing throws those instructions away and replaces each page with a picture of the result. The page looks the same on screen, but underneath there are no longer any fonts, vector paths, text objects or embedded scripts - just pixels.
That sounds like pure loss, and for some jobs it is. But it is exactly what you want in three common situations. First, redaction: covering text with a black box leaves the text underneath, still selectable and copyable, unless the page is flattened. Second, print fidelity: an image renders identically on any printer or press. Third, neutralising active content - scripts, embedded files and form logic cannot survive the conversion.
Because nothing but pixels survives, the output is larger than the input for text-heavy documents and usually larger for vector illustrations. Use JPEG at a modest DPI when size matters, and PNG when you need lossless output.
The result is still an ordinary PDF, so it opens everywhere, keeps its page count and dimensions, and prints exactly as it did before. What it loses is structure: no text layer, no tags, no form fields, no accessibility information. When any of those matter, rasterize a copy rather than your only original, and keep the structured version for the people who need it.
Rasterizing is also what makes a redaction trustworthy. Drawing a black box over a name hides it from the eye but leaves the underlying text selectable, copyable and extractable - a mistake that has leaked genuine documents. Covering the text and then flattening the page removes it for good, and that second step is the one people skip.
When to rasterize
Key Features
Add one or more files. Encrypted documents are unlocked locally with the password you provide.
150 DPI suits screens and archiving, 300 DPI for print, 600 DPI only when you truly need it. Pick PNG for lossless output or JPEG for smaller files.
Each page is rendered and reassembled into a new PDF at the original page size. Batch inputs download as separate files.
Straighten tilted scans first
Shrink the result
Redact before flattening
Rasterize only part of a file
Get separate images instead
Reduce size for scans
Strip what rasterising misses
Merge layers before rendering
Recombine rasterized parts