Does Prepend Duplicate First Page upload my file or text to Tool-You servers?

No. Prepend Duplicate First Page runs in this browser tab. Files stay on the device. Limit note: PDF only. Needs ≥1 page. Max 50 MB.

Should I use Duplicate First PDF Page instead of Prepend Duplicate First Page?

Use Prepend Duplicate First Page when you need Copy page 1 to the front. Use Duplicate First PDF Page when you need Append a copy of page 1. They share a category (PDF) but not the same job.

Prepend Duplicate First Page

Copy page 1 to the front.

Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib.

What Prepend Duplicate First Page does

Practical limit for Prepend Duplicate First Page: PDF only. Needs ≥1 page. Max 50 MB. That is why output can differ from heavy desktop PDF software. Read the tool-specific note again: Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib.

How to use Prepend Duplicate First Page

Stay on this Prepend Duplicate First Page page (/prepend-duplicate-first-pdf). Do not switch to Duplicate First PDF Page unless you actually want Append a copy of page 1..
Add the file type Prepend Duplicate First Page accepts. Hint from the path: prepend duplicate first pdf. Copy page 1 to the front.
Set only the options that match Prepend Duplicate First Page. Neighbor Extract First PDF Page does something else (Save only the first page as a PDF.). Tool note: Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib.
Run Prepend Duplicate First Page in this tab. Browser memory still applies: PDF only. Needs ≥1 page. Max 50 MB.
Download or copy the result from Prepend Duplicate First Page. If it is the wrong job, open Duplicate First PDF Page instead.

When not to use Prepend Duplicate First Page

Skip Prepend Duplicate First Page when a neighbor tool matches better — start with Duplicate First PDF Page or Extract First PDF Page — or when the description already warns the job will fail. In the tool’s own words: Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib.

Questions about Prepend Duplicate First Page

What does Prepend Duplicate First Page do that other PDF pages on this site do not?: Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib. Short version: Copy page 1 to the front.
Does Prepend Duplicate First Page upload my file or text to Tool-You servers?: No. Prepend Duplicate First Page runs in this browser tab. Files stay on the device. Limit note: PDF only. Needs ≥1 page. Max 50 MB.
Should I use Duplicate First PDF Page instead of Prepend Duplicate First Page?: Use Prepend Duplicate First Page when you need Copy page 1 to the front. Use Duplicate First PDF Page when you need Append a copy of page 1. They share a category (PDF) but not the same job.
What are the limits of Prepend Duplicate First Page?: PDF only. Needs ≥1 page. Max 50 MB. Also: Inserts a copy of page 1 before the original first page. Unlike Duplicate First PDF Page this prepends, not appends at the end. Unlike Add Blank PDF Pages this copies a real page, not a blank. Runs in the browser with pdf-lib.