Best PDF Highlighter Apps

241+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated May 2026

With an average user rating of 4.5โ˜…, the pdf highlighter category is one of the App Store's strongest. Browse all 241+ apps we track, sorted so the most loved ones surface first.

Top Picks for PDF Highlighter

PDF Expert: Editor & Converter#1

PDF Expert: Editor & Converter by Readdle Technologies Limited

Edit, Sign, Convert Documents
Editor's Choice
๐Ÿ“Š Productivity
4.7๐Ÿ˜(215K ratings)
FreeAdsIn-App Purchases
#69in Productivity
PDF Expert: Editor & Converter screenshot 1
PDF Expert: Editor & Converter screenshot 2
PDF Expert: Editor & Converter screenshot 3
PDF Expert: Editor & Converter screenshot 4
PDF Expert: Editor & Converter screenshot 5
PDF Expert: Editor & Converter screenshot 6

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

What We Love

  • ๐Ÿš€ Fast and responsive
  • ๐Ÿ‘ Intuitive and user-friendly interface
  • ๐Ÿ’ก Powerful annotation and editing tools
  • ๐Ÿ”’ Seamless cloud integration

Room to Improve

  • ๐Ÿ› Frequent crashes and stability issues
  • ๐Ÿ”’ Subscription model for advanced features
  • ๐Ÿ”’ Inconsistent pricing and feature changes
Highlights: PDF Reader & Notes#3

Highlights: PDF Reader & Notes by Jonas Myren Ribe

Edit Research Documents/Books
Worth Considering
๐Ÿ“Š Productivity
4.5๐Ÿ˜(1.6K ratings)
FreeIn-App Purchases
Highlights: PDF Reader & Notes screenshot 1
Highlights: PDF Reader & Notes screenshot 2
Highlights: PDF Reader & Notes screenshot 3
Highlights: PDF Reader & Notes screenshot 4
Highlights: PDF Reader & Notes screenshot 5
Highlights: PDF Reader & Notes screenshot 6

This app is a fast and lightweight PDF reader designed for research. It allows users to read, highlight, and annotate documents, and then extract this information into organized notes. Advanced features include table data extraction, text recognition, and smart copying of annotations into various formats.

What We Love

  • ๐Ÿš€ Great for highlighting and annotating PDFs
  • ๐Ÿ” Effective for research and note-taking
  • ๐Ÿ“š Useful for academic and professional work
  • ๐Ÿ‘ Clean and intuitive user interface

Room to Improve

  • ๐Ÿ’ฐ Subscription model is too expensive
  • ๐Ÿ› Frequent crashes and bugs
  • ๐Ÿ” Limited search functionality

More PDF Highlighter apps to explore

4
Acrobat Reader: PDF Editor
Acrobat Reader: PDF Editor
Acrobat Reader: PDF Editor
Documents Editor & Converter
Free

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

View, edit, and annotate PDFsSign and fill PDF formsConvert files to and from PDF
๐Ÿ’ผ Business
(628K)
freemium
5
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
Scan, fill, sign,make pdf docs
Free

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

Edit PDF documentsEsign and fill out formsShare and collaborate on documents
๐Ÿ’ผ Business
(7.6K)
free with in-app purchases
6
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
Edit,read,sign,annotate pdf
Free

This application offers comprehensive PDF management, including advanced editing, AI-powered summarization and translation, and efficient scanning with OCR. It helps organize, convert, and secure documents for work, study, and personal use.

AI Chat with PDFScan and OCRPDF to Office Conversion
๐Ÿ“Š Productivity
(7.5K)
free with in-app purchases
7
PDF Pro - Reader Editor Forms
PDF Pro - Reader Editor Forms
PDF Pro - Reader Editor Forms
Edit, annotate, view documents
Free

Edit, annotate, and read PDF documents on your iPhone and iPad. Highlight text, add notes, shapes, voice recordings, and photos. Search your entire PDF library, fill out forms, and sign documents.

Edit and annotate PDFsHighlight text and add notesEmbed audio and photo annotations
๐Ÿ“Š Productivity
(6.8K)
subscription
8
iLovePDF - PDF Editor & Scan
iLovePDF - PDF Editor & Scan
iLovePDF - PDF Editor & Scan
For Work, Study & E-Signing
Free

Edit, convert, annotate, and sign PDF documents on the go. This app offers tools to scan, merge, split, compress, and protect your files, enhancing productivity for work and study.

Scan documents to PDFConvert JPG/Office to PDFEdit and annotate PDFs
๐Ÿ“Š Productivity
(50K)
freemium
9
Foxit PDF Editor
Foxit PDF Editor
Foxit PDF Editor
View, Edit, Convert, and Sign
Free

This mobile app offers comprehensive PDF management, allowing users to view, edit, annotate, and convert PDF files on the go. It includes AI-powered features for summarization, translation, and text enhancement, alongside robust tools for creating, signing, and protecting documents.

AI-powered PDF summarization and translationEdit text and images within PDFsConvert PDFs to and from various formats
๐Ÿ“Š Productivity
(4.8K)
freemium
10
PDF Highlighter: Edit PDF
PDF Highlighter: Edit PDF
PDF Highlighter: Edit PDF
Highlight & Annotate Files
Free
๐Ÿ“Š Productivity
(0)
11
CamScanner - PDF Scanner App
CamScanner - PDF Scanner App
CamScanner - PDF Scanner App
ะกะบะฐะฝะตั€ ั‚ะตะบัั‚ะฐ,ั„ะพั‚ะพ,ั„ะฐะนะปะพะฒ PDF
Free

Transform your mobile device into a powerful portable scanner. Instantly scan, edit, and share documents in various formats like PDF, JPG, Word, and TXT. Features include OCR, e-signatures, and secure file management.

Mobile document scanningText recognition (OCR)PDF conversion
๐Ÿ“Š Productivity
(1.8M)
free with in-app purchases
12
PDF it All Document Converter
PDF it All Document Converter
PDF it All Document Converter
Compress PDF Photos,Files,Word
Free

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to compress, convert, edit, merge, split, sign, and protect PDF files. All operations are performed locally on the device for enhanced security.

Compress PDF filesConvert Office, Web, Photos to PDFEdit PDF pages (remove, rotate)
๐Ÿ“Š Productivity
(7.9K)
free with in-app purchases
13
PDF Editor: Read, Scan & Sign
PDF Editor: Read, Scan & Sign
PDF Editor: Read, Scan & Sign
Markup, PDF Converter & Reader
Free

Edit, read, scan, and convert PDF documents with a comprehensive suite of tools. Annotate, draw, and sign your files with ease. This app offers offline functionality and supports collaboration.

Edit and annotate PDF documentsScan physical documents to PDFConvert various file types to PDF
๐Ÿ’ผ Business
(6.9K)
free with in-app purchases
14
Smallpdf: Scanner & PDF Editor
Smallpdf: Scanner & PDF Editor
Smallpdf: Scanner & PDF Editor
compress, convert, ocr, sign
Free

This app offers a comprehensive suite of tools to manage PDF documents. Easily convert, edit, compress, sign, merge, and scan PDFs using your mobile device. It also features OCR technology to convert scanned documents into editable text.

Convert PDFs to Word, Excel, PPT, JPG, PNGEdit PDFs with text, images, and annotationsCompress PDFs to reduce file size
๐Ÿ“Š Productivity
(6.8K)
free with in-app purchases
15
PDF Highlighter - Read & Edit
PDF Highlighter - Read & Edit
PDF Highlighter - Read & Edit
by Jaydeep Dhameliya
Free

Easily edit and highlight text, photos, and documents directly on your phone. This app provides realistic highlighting tools and drawing functions to mark important sections of PDFs and images, allowing you to save and share your annotated files.

Edit and highlight PDF files and photosUse realistic highlighter pen toolFreehand drawing with pen, line, arrow, rectangle, and circle tools
๐Ÿ“Š Productivity
(1)
free
16
PDF Gear - PDF Editor & Reader
PDF Gear - PDF Editor & Reader
PDF Gear - PDF Editor & Reader
PDF Converter for acrobat PDF
Free

This app offers a comprehensive suite of tools for managing PDF documents on mobile devices. Users can easily view, annotate, edit pages, fill out forms, and digitally sign documents. It provides a free and unlimited experience for all its powerful PDF manipulation features.

View and print PDFsAnnotate with highlights, text, and drawingsOrganize pages (add, delete, rotate, extract)
๐Ÿ’ผ Business
(7.6K)
free
17
PDF Reader โ€“ PDFelement
PDF Reader โ€“ PDFelement
PDF Reader โ€“ PDFelement
PDF Editor & Viewer, PDF Maker
Free

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

Liquid Mode for optimized mobile readingAnnotation tools (pencil, text, highlighting)Handwritten signature insertion
๐Ÿ“Š Productivity
(3.9K)
free
18
PDF Reader Pro: Scan & Convert
PDF Reader Pro: Scan & Convert
PDF Reader Pro: Scan & Convert
Scan & Edit PDF Fast and Easy
Free

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to quickly view, scan, edit, and convert PDFs, with features like OCR, annotation, and secure file management. It's designed for efficient handling of all your PDF needs on iOS devices.

Fast PDF reader and viewerAdvanced document scanner with OCRPowerful PDF converter
๐Ÿ”ง Utilities
(703)
free with in-app purchases
19
PDF Editor ยฎ
PDF Editor ยฎ
PDF Editor ยฎ
Edit, Reader Converter Maker 7
Free

Edit, sign, and convert PDF documents directly from your mobile device. Scan physical papers into editable PDFs, annotate text, and fill out forms on the go. All your documents are stored locally for privacy and can be easily shared.

Edit PDF filesSign documentsConvert scanned papers to PDF
๐Ÿ’ผ Business
(28K)
free with in-app purchases
20
PDF Reader - Editor & Scanner
PDF Reader - Editor & Scanner
PDF Reader - Editor & Scanner
Read, Edit, Sign, Scan PDF
Free

This app provides comprehensive PDF management, including reading, editing, and scanning. It uses AI for intelligent document recognition, summarization, and conversion to various formats. Securely store and access your files in the cloud or from popular services.

AI-powered PDF editing and summarizationIntelligent document scanning with OCRConvert between PDF and other file formats
๐Ÿ”ง Utilities
(511)
free with in-app purchases

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