40+ Free Online Tools – PDF, Image, Education, Document & Text Utilities
Browse 40+ fast, free and secure online tools including PDF Merge, Image Compressor, Resume Builder, GPA Calculator and Word Counter.
📄 PDF Tools (18)
Merge, split, compress, convert, and manage PDFs easily.
PDF Merge
Combine multiple PDFs into one document
Extract PDF Pages
Extract specific pages by number or range
Split PDF by Page Range
Split PDF by custom page ranges into multiple files
Reorder PDF Pages
Drag-and-drop to rearrange or delete pages
Rotate PDF Pages
Rotate all pages by 90°, 180°, or 270°
Compress PDF
Reduce PDF file size with 3 compression levels
PDF to Image
Convert PDF pages to PNG or JPG images
Image to PDF
Convert JPG and PNG images to PDF
PDF to Word
Convert PDF to editable Word (DOCX) files
Add Watermark
Add custom text or image watermarks to PDFs
PDF Page Numbers
Add customizable page numbers to PDFs
Duplicate PDF Pages
Create copies of specific pages within your PDF
Crop PDF Pages
Remove margins or crop specific areas from PDFs
Change Page Size
Resize PDF pages to standard or custom sizes
PDF Metadata
View and edit PDF properties and information
Grayscale PDF
Convert colored PDFs to black and white
Sign PDF
Add signatures, initials, dates, and text
Unlock PDF
Remove password protection from secured PDFs
🖼️ Image Tools (5)
Resize, compress, convert, and protect your images.
🎓 Education Tools (10)
Calculators and study helpers for students and teachers.
GPA Calculator
Calculate GPA with credits and multiple grade scales
CGPA Calculator
Calculate CGPA across semesters with grade tracking
Grade Calculator
Convert marks to grades with weighted subjects
Percentage Calculator
Calculate percentages and CGPA conversions instantly
Attendance Tracker
Track and calculate attendance percentage daily
Flashcard Creator
Create and study with categorized flashcards
Quiz Generator
Create custom quizzes with multiple question types
Notes Organizer
Organize notes by category, tags, and colors
Revision Planner
Plan study schedule and track exam preparation
Rank Calculator
Calculate rankings and score statistics instantly
📋 Document Tools (3)
Create resumes, invoices, and fillable documents.
📝 Text/Web Tools (9)
Analyze, convert, and transform text instantly.
Word Counter
Count words, characters, and reading time
Case Converter
Convert text to uppercase, lowercase, camelCase
JSON Formatter
Format, validate, and minify JSON instantly
Base64 Encoder/Decoder
Encode and decode Base64 strings online
URL Encoder/Decoder
Encode and decode URLs with custom options
Text to Speech
Convert text to audio with voice selection
Regex Tester
Test and debug regular expressions instantly
Lorem Ipsum Generator
Generate dummy text for mockups and designs
Text Summarizer
Summarize long text with multiple modes
Why Choose Koovlo?
Fast, free, and reliable tools for everyone
Lightning Fast
All tools are optimized for speed and performance.
100% Free
No hidden charges. Use all tools completely free.
Privacy First
Your data is processed locally in your browser.
Mobile Ready
All tools are optimized for phones and tablets.
Frequently Asked Questions
Quick answers to common questions.
Are all tools free to use?
Yes, all Koovlo tools are free and available directly in your browser.
Do I need to create an account?
No signup required. Just open any tool and start using it.
Is my data safe?
Most tools process data locally in your browser for better privacy.
Can I use these tools on mobile?
Yes. The tools are designed to work smoothly on phones and tablets.