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Create a

Invert Colors
Create a "dark mode" version of your PDF.
Add text to the top and bottom of pages.

Header & Footer
Add text to the top and bottom of pages.
Stamp text or an image over your PDF pages.

Add Watermark
Stamp text or an image over your PDF pages.
Insert page numbers into your document.

Page Numbers
Insert page numbers into your document.
Generate a table of contents page from PDF bookmarks.

Table of Contents
Generate a table of contents page from PDF bookmarks.
Add, edit, import, delete and extract PDF bookmarks.

Edit Bookmarks
Add, edit, import, delete and extract PDF bookmarks.
Annotate, highlight, redact, comment, add shapes/images, search, and view PDFs.

PDF Editor
Annotate, highlight, redact, comment, add shapes/images, search, and view PDFs.
Experience time like never before with

Clock of Clocks
Experience time like never before with "Clock of Clocks"—an interactive online clock built from dozens of mini clocks. Customize colors, choose themes, and enjoy full-screen mode on desktop!
Try this interactive Burrows-Wheeler Transform (BWT) Cipher to safely scramble any text while keeping its original meaning intact—and reverse the transformation anytime to recover the exact original message.

Burrows-Wheeler Transform Cipher
Try this interactive Burrows-Wheeler Transform (BWT) Cipher to safely scramble any text while keeping its original meaning intact—and reverse the transformation anytime to recover the exact original message.
Pet Pet Generator can transform any image into cute animated GIFs with petting effects.

Pet Pet Generator
Pet Pet Generator can transform any image into cute animated GIFs with petting effects.
Encode & decode secret messages using invisible Unicode characters (ZWSP, ZWNJ, ZWJ). Perfect for CTF, steganography, or covert communication. No install, copy-paste ready.

Zero-Width Characters Cipher
Encode & decode secret messages using invisible Unicode characters (ZWSP, ZWNJ, ZWJ). Perfect for CTF, steganography, or covert communication. No install, copy-paste ready.
Tiny Text Generator can instantly convert normal text into tiny or small caps using real Unicode characters. Perfect for Instagram, Twitter, WhatsApp & more — no font tricks, just copy-paste fun!

Tiny Text Generator
Tiny Text Generator can instantly convert normal text into tiny or small caps using real Unicode characters. Perfect for Instagram, Twitter, WhatsApp & more — no font tricks, just copy-paste fun!

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