Edit & Annotate
Edit, annotate, and modify PDF content
Edit PDF
Edit PDF documents online directly in your browser. Add text, highlights, images, freehand drawings, and form fields with zero server uploads and complete privacy.
Sign PDF
Sign contracts, NDAs, and forms electronically. Draw, type, or upload your signature with zero server uploads and 100% local browser privacy.
Crop PDF Online
Crop PDF online for free — trim margins, cut unwanted areas, and resize PDF pages precisely. 100% private, client-side browser processing with zero server uploads.
Edit Bookmarks
Add, edit, and manage PDF bookmarks. Create navigation structure for your documents.
Table of Contents
Generate a table of contents for your PDF. Create clickable navigation from bookmarks.
Page Numbers
Add page numbers to PDF documents. Customize position, format, and starting number.
Add Watermark to PDF
Add custom text or image watermarks to your PDF files online. Protect copyright, mark drafts, and brand documents with semi-transparent stamps and complete privacy.
Header & Footer
Add headers and footers to PDF documents. Include page numbers, dates, and custom text.
Invert Colors
Invert PDF colors for dark mode reading. Convert documents to negative colors.
Background Color
Change PDF background color. Add colored backgrounds to document pages.
Change Text Color
Change text color in PDF documents. Modify the color of all text content.
Add Stamps
Add stamps to PDF documents. Use preset or custom stamps for approval, review, and more.
Remove Annotations
Remove annotations from PDF files. Delete comments, highlights, and markup.
Form Filler
Fill PDF forms online. Complete interactive PDF forms without printing.
Form Creator
Create fillable PDF forms. Add text fields, checkboxes, and dropdowns to documents.
Remove Blank Pages
Automatically detect and remove blank pages from PDF documents.
PDF Reader
Free online PDF reader. View, navigate, zoom, rotate, and print PDF documents directly in your browser.
Citation Linker
Scan and activate citation markers in PDFs, converting them into clickable DOI links or page-jump targets.
Form Logic Designer
Design dynamic behaviors using a glassmorphic node canvas and inject interactive AcroJS logic into PDF forms.
Auto Generate Bookmarks
Analyze document layout hierarchy and regex patterns (e.g. Chapter) to generate and inject /Outline bookmark catalogs.
Batch Inject Barcodes
Generate custom QR/Code128 tags and precisely inject them into bulk PDF pages with aligning guidelines.
Extract Signature & Stamp
Extract handwritten signatures and red corporate stamps from photos, remove paper shadow noise, and export transparent PNGs.
Generate Interactive TOC
Generate aesthetic Table of Contents pages, insert them pre-content, and wire internal bidirectional GoTo anchors.
Two-Column Paper Reflow
Analyze IEEE/ACM double-column paper PDF structures and reflow them into responsive single-column layouts for smooth mobile and e-Reader viewing.
Calculate Book Spine Width
Calculate book spine width based on page count and paper GSM, and generate a printable cover template with spine fold lines.
Grid Scratchpad Canvas
Stitch high-quality grid, ruled, or Cornell note-taking margins to PDF pages for formula derivations and exam note preparation.