PDF Layers
Work with the layers in a PDF, also called optional content: plans, maps, artwork and multi-language documents often have them. Choose which layers are shown when the file opens, rename them, or flatten the PDF to keep just what is visible.
PDF Layers
Add · Choose layers · Save
How to show, hide or flatten PDF layers
Add your PDF
Drop the file onto the tool or click Choose files.
Choose the layers
Tick the layers to show, rename them, and see the preview update.
Download
Keep the layers with your settings, or flatten them.
Why use it
What this free tool does
Show or hide
Set which layers are visible when the PDF opens.
Rename
Give layers clear names.
Flatten
Keep what is visible, delete hidden layers.
Live preview
See the page with your choices.
Consistent printing
Flattened PDFs print the same everywhere.
Private
Nothing is uploaded.
Keep layers or flatten?
Keeping layers lets readers switch them on and off in Adobe Reader and other apps that support them; your choices only set what shows when the file opens.
Flattening removes the content of hidden layers from the file, so it can't be shown again, and the PDF looks the same in every app, even ones that don't understand layers.
Tip: Sending a drawing to a printer? Flatten first so nothing hidden turns up in print.
Your files stay on your device
Most online PDF sites upload your documents to their servers. Aleynray Ai does the work inside your browser instead, on your own computer or phone.
Nothing is sent anywhere, so contracts, bank statements, IDs and medical forms stay private, and there is no waiting for uploads.
- Free, with no sign-up or limits
- No watermark
- Files never leave your device
- Opens password-protected PDFs
- Works on desktop and mobile
Frequently asked questions
What are PDF layers?
Groups of content that can be shown or hidden, technically called Optional Content Groups (OCG).
Why does my PDF have no layers?
Most PDFs don't; they come from CAD, design and mapping software.
Does flattening reduce quality?
No, visible content stays exactly as it was.
Is it free?
Yes. There is no sign-up, no limit on files and no watermark.
Are my files uploaded?
No. The tool runs inside your web browser and works on the file on your own device. Nothing is sent to a server, so private documents stay private.