Best PDF Annotators in the UK

PDF Tools for you to be more productive with PDF documents. Free and easy to use! Add text, images, freehand annotations to PDF. Fill forms. Create your own signature and sign document. Send PDF files safely and securely with a link that automatically expires, zero-knowledge end-to-end encryption with 256-bit AES.

Nitro PDF delivers a comprehensive PDF editing platform designed to empower individuals and organizations to create, edit, convert, and secure PDF documents with ease and precision. Known for its intuitive interface that resembles Microsoft Office and Apple’s toolbar, Nitro ensures quick user adoption regardless of technical expertise. Its rich feature set includes OCR capabilities, advanced annotation, digital signatures, and seamless integration with tools like Microsoft 365 and SharePoint. Security and compliance are central to Nitro’s offering, with multiple global certifications including SOC 2, HIPAA, QTSP, and ISO 27001 assuring robust data protection. The platform’s AI-driven productivity tools automate repetitive tasks and enhance collaboration, enabling teams to work smarter and faster. Nitro PDF is supported by a dedicated customer success team available 24/7, ensuring smooth implementation and ongoing support. Flexible subscription plans and a one-time purchase option cater to diverse needs from small businesses to large enterprises. Trusted by leading companies worldwide, Nitro PDF transforms document workflows into efficient, secure, and productive processes.

UPDF allows you to edit, annotate, and manage PDF on Windows, Mac, iOS, Android, and Android. All the tools you need to organize, edit, annotate and manage your PDF files are available in one smart, all-rounder smart app. It was specifically designed to satisfy the needs of most users who want a beautiful yet easy-to-understand interface that is not only for beginners. Key Features 1. Edit PDF Document You can add, delete, and edit text properties and formats, such as font style, font color and size. You can also crop and rotate, replace, remove, or extract images. 2. Annotate PDF - Highlight, underline, or strike out any parts. For a faster and easier way to add text, you can also add shapes, sticky note and text boxes. 3. PDF Page Management Rotate, delete and extract PDF pages. 4. Navigate and View PDF Files - Flexible reading mode, such as single-page mode or double-page mode.

Simple yet powerful, SignFlow transforms the way you interact with PDFs by making reading, annotating, editing, signing, organizing, and filling out secure documents a breeze! Equipped with a comprehensive suite of essential PDF tools, SignFlow stands as your ultimate companion for managing PDF files. With SignFlow, you can seamlessly add legally-binding digital signatures to your documents while enjoying a user-friendly solution for creating, editing, and completing PDF forms. The platform allows for easy text editing within PDFs akin to word processing, enabling you to manage and modify PDF pages with ease, as well as annotate and view your files effortlessly. Experience various reading modes, including Full-Screen, Single Page, Read Mode, Split View, and Multi-tab for maximum convenience. You can navigate smoothly through pages and effortlessly toggle between day mode, night mode, and a special eye-protection mode for those long reading sessions. Make your notes stand out! Utilize highlighting, underlining, and strikethrough options to emphasize important texts in your PDF documents. Choose from a palette of colors to draw attention to different pieces of information. Additionally, enhance your PDFs with standard business stamps such as APPROVED, along with digital, dynamic, and customizable text/image stamps for a professional touch. Whether for work or personal use, SignFlow is designed to enrich your PDF experience and streamline your workflow.

LightPDF helps users handle PDFs and images efficiently with AI automation, OCR, and full editing capabilities—all in one platform for work, study, or collaboration. 【AI Tools】 • AI PDF Generator: Create PDFs from prompts in 20+ languages • PDF to Mind Map: Generate editable mind maps from PDFs • Prompt to PPT: Generate fully editable PowerPoint slides • PDF Translation: Translate documents in one click • Watermark & Logo Removal: PDFs and images • AI Agent: Automate multiple PDF tasks at once 【Watermark & Image Processing】 • PDF Watermark Remover • Image Watermark Remover • Sticker Remover • Logo Remover • Image Text Remover 【OCR & Image Conversion】 • Image to Text: JPG to Word, Image to TXT, and more • Image format conversion: HEIC, WebP, PNG, JPG 【PDF Editing & Conversion】 • Convert PDFs to Word, Excel, PPT, TXT, PDF/A, Markdown, etc. • Convert other formats to PDF: Word, PPT, Excel, HTML, JPG, PNG, and more • Edit PDFs: Annotate, replace text, add/remove pages, merge, split, crop, rotate, compress, optimize

All-in-one online PDF editor, free of subscriptions and installations DeftPDF is an online tool that allows you to edit and convert your PDF files in just a few clicks.