Layer Manager
Inspect and control PDF layers (optional content groups). Toggle visibility, rename, or delete layers - including hidden ones you did not know existed.
PDF 파일 업로드
이 도구에 대하여
PDFs can contain layers, formally called optional content groups. CAD exports use them for electrical, plumbing and structural plans on one drawing. Maps use them for roads, labels and terrain. Multilingual documents sometimes hold each language in its own layer.
Most viewers hide this entirely, so a document can carry content that is present in the file but not visible on screen - which is a real disclosure risk. A drawing distributed with a hidden internal-notes layer still contains those notes.
This lists every layer, shows its visibility state, and lets you toggle, rename or delete them. Deleting removes the content from the file rather than just hiding it, which is what you want before sending a drawing outside your organisation.
사용 방법
Load the PDF
Drop in the file. All optional content groups are listed with their current visibility.
Inspect the layers
Toggle each one to see what it contains, including any that were hidden by default.
Rename or delete
Give layers clearer names, or delete the ones that should not be in the file at all.
Save
Download the PDF with the revised layer set.
활용 사례
CAD drawing hand-off
Delete the internal-notes layer before the drawing goes to a contractor.
Checking for hidden content
Find layers that are present in the file but not shown on screen.
Multilingual documents
Keep the language layer you need and remove the rest.
자주 묻는 질문
What is an optional content group?
The PDF term for a layer - a named set of content whose visibility can be toggled. CAD, mapping and multilingual documents use them heavily.
Does deleting a layer remove the content?
Yes. The content is removed from the file, not just hidden - which is the point when the layer holds something confidential.
Why can I not see layers in my usual viewer?
Most browser viewers do not expose the layers panel at all, so hidden content stays invisible and undiscovered.
Can I add new layers?
Yes, though most workflows use this to inspect and remove what is already there.