Analyze PDF

See what takes up space, which images are supported, and which document features need care. Your file is not changed.

All processing happens in your browser. Nothing is uploaded.

Drop PDF files here or click to browse

About this tool

See what takes up space, which images are supported, and which document features need care. Your file is not changed.

Stream sizes show where encoded data is stored. They do not predict how much compression will save.
Checked locally without changing the file. Pages without usable text need OCR before they can be searched or copied.
Eligible source bytes measure image data this browser implementation understands. They are not an estimate of final savings.
This PDF is digitally signed. Analysis is safe, but rewriting it would invalidate the signature, so compression must be refused.

File overview