CovePDF
PDF solution that fits your needs. Pay only for the features you need and keep it simple. Prevent unauthorized access and increase your documents security by setting passwords and permissions. Verify your important PDF documents by applying your digital signatures and trusted certificates. Quickly navigate to important positions and items in your document by using the bookmarks feature. Leave comments and highlights while reading and enhance the way you review documents. Work together with your colleagues on the same documents in real time and always have a single document version. Make text revisions by visually comparing two documents side by side. Make quick changes to existing text in your documents by changing the fonts, font style, color and line spacing. Reorganize the flow of your document by inserting, replacing, deleting and moving pages inside. Give your documents the desired look and feel by adding new or easily modifying existing images.
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DonePDF
DonePDF is a browser-based toolkit for working with PDFs. It offers conversion between PDF and formats such as Word, Excel, PowerPoint, images and HTML; merging and splitting; page reordering, rotation, removal and addition; compression and repair; and signatures, annotations, watermarks and page numbers. Users can protect or unlock files, redact content, compare documents and make scans searchable with OCR. The editor adds text and images, fills forms, signs, highlights and comments. Its text-replacement tool overlays original text instead of changing underlying PDF text. Most tools process files in the browser; some operations use server processing. DonePDF runs in browsers without installation and has free tools with no account or watermark. Its interface supports 20 languages, including Arabic and right-to-left layout. File-size limits vary by tool.
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NextDiff
NextDiff is a free Windows utility for comparing files and folders in a clear visual interface. It helps users inspect differences between two versions of a text file, source code file, log, script, or configuration file. The side-by-side comparison view highlights added, removed, and changed lines, while in-line change marking helps identify the exact modified fragments. NextDiff also supports folder comparison, direct editing, copy-left/copy-right merge actions, difference navigation, and flexible options for ignoring case, blank lines, and whitespace. It is a useful freeware tool for developers, administrators, writers, and anyone who regularly works with changed files.
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PDFkind
PDFkind is a browser-based PDF editor and document utility for individuals and teams who need to revise or prepare PDF files. It lets users edit existing text, add text and images, sign documents, fill or create form fields, and mark up pages with highlights, shapes, comments, stamps, links, and watermarks. OCR adds a searchable text layer to scanned pages, while page tools support merging, splitting, reordering, rotating, cropping, and extracting pages. Additional tools compress PDFs, compare versions, protect or unlock files, and convert PDFs to and from image formats. Processing takes place in the browser on the user's device, without uploading the document to a server. The service is free to use and does not require an account or add watermarks. It supports routine document editing, form completion, OCR, and file organization.
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