Merge PDF
Combine multiple PDF files into a single document, in any order.
Open toolMerge, split, compress, rotate, edit, add form fields, watermark and convert PDF files, plus organize, inspect, extract from and password-protect them. 23 free tools in this category, all running entirely in your browser.
Combine multiple PDF files into a single document, in any order.
Open toolEncrypt a PDF with a password so it can't be opened without it.
Open toolRemove password protection from a PDF you already know the password for.
Open toolDivide a PDF into separate files by page range, or one file per page.
Open toolConvert every page of a PDF into a JPG image at your chosen resolution.
Open toolCombine JPG, PNG or WEBP images into a single PDF, one image per page.
Open toolReduce a PDF's file size by choosing a compression level.
Open toolPreview every page as a thumbnail and rotate the ones that are sideways.
Open toolHit a precise KB or MB target for your PDF file size.
Open toolClick pages to mark them for deletion, then download the rest.
Open toolSelect just the pages you need and save them as a new PDF.
Open toolDrag page thumbnails into a new order, then export.
Open toolFlip a PDF's page order with one click.
Open toolAdd page numbers to every page, with position and format options.
Open toolStamp text like "CONFIDENTIAL" or "DRAFT" across every page.
Open toolAdd text, images, shapes, drawing, highlights, a signature and more.
Open toolAdd real, fillable text fields, checkboxes and radio buttons.
Open toolDrag pages from multiple PDFs into one combined order.
Open toolReorder pages into booklet imposition order for printing.
Open toolSee page count, word count, file size, version and metadata at a glance.
Open toolEdit a PDF's title, author, subject and keywords.
Open toolPull every embedded image out of a PDF.
Open toolList every hyperlink in a PDF, with its page number.
Open toolFAQ
This category groups together 6 tools for working with PDF files — merging, splitting, converting, compressing and rotating. Every tool listed above is fully working.
Yes. Every tool on Calcooo is completely free and does not require an account.
Yes. Every PDF tool processes your file entirely inside your browser using JavaScript — files are never uploaded to Calcooo or any server.
Yes. Every tool page is built mobile-first and works on phones, tablets and desktops.