Open DevTools.
Insert blank pages.
Watch nothing get sent anywhere.
Tell it where to add blank pages — before the first page, between any two pages, or at the very end — sized to match their neighbors, entirely inside this tab. Zero network requests after the page loads, same rule as every other tool here. Check the Network tab yourself.
Drop one PDF here or click to browse
One file at a time · stays on this device
Why trust this tool
No accounts
No signup, no email, no watermark. Use it and close the tab.
No limits (for now)
Insert as many blank pages as your device's memory allows. No artificial caps.
Duplicating or deleting pages too? Both live.
Duplicate specific pages, or remove them — same rule: everything stays local. Leave your email and we'll let you know about a Pro batch mode.
Thanks — saved locally for now, we'll be in touch once signups are live.
Adding blank pages exactly where you need them
Insert Blank Pages adds new, empty pages before the first page, between any two existing pages, or at the end — sized automatically to match the neighboring page, so a blank inserted into a Letter-size document doesn't quietly become A4. Multiple insert positions are applied in descending order internally, so queuing up several inserts at once doesn't shift the page numbers you already specified for the others.
This is a structural edit only — it adds pages, it doesn't touch the content of any existing one, and it works the same way whether the source PDF has text, scans, or forms. The one thing it can't do anything about is a file that's encrypted before you ever get to insert into it; here's why a password-protected PDF won't open in any browser-based tool, this one included.