Free PDF Tools, Image Converters, Image Compressors & AI Tools
Merge PDF files, compress PDF documents, convert JPG to PDF, convert PDF to JPG, resize images, compress images, check grammar and use free AI tools directly in your browser.
All Tools
Choose from our collection of powerful online tools
Merge PDF
Combine multiple PDFs into one document
Compress PDF
Reduce PDF file size without losing quality
Split PDF
Extract pages or split into multiple files
JPG to PDF
Convert images to PDF document
PDF to JPG
Extract PDF pages as high-quality images
Smart Image Compressor
Compress images to exact target size
Image Resizer
Resize with social media presets
JPG to PNG
Convert JPG to PNG with transparency
PNG to JPG
Convert PNG to JPG with quality control
WEBP Converter
Convert to/from WEBP format
Grammar Checker
Fix grammar, spelling, and punctuation
AI Text Humanizer
Make AI-generated text sound natural
Text Summarizer
Summarize long text into key points
Paragraph Rewriter
Rewrite and rephrase paragraphs
Case Converter Pro
Advanced text case conversion
EMI Calculator
Calculate your monthly loan EMI instantly
SIP Calculator
Calculate SIP returns and future investment value
Loan Calculator
Calculate loan payments and amortization
GST Calculator
Calculate GST amount and net price
Discount Calculator
Calculate discounted price and savings
Percentage Calculator
Calculate percentages easily
Currency Converter
Convert between world currencies
BMI Calculator
Calculate your Body Mass Index
Age Calculator
Calculate exact age from date of birth
Water Intake Calculator
Find your daily water requirement
Calorie Calculator
Calculate daily calorie needs
Weight Converter
Convert between weight units
Length Converter
Convert between length/distance units
Temperature Converter
Convert between temperature scales
Area Converter
Convert between area units
QR Code Generator
Generate QR codes instantly
Password Generator
Generate strong secure passwords
Word Counter
Count words, characters, and sentences
Case Converter
Convert text case format
Zylo Tools is your all-in-one platform for free online tools that work entirely in your browser. Whether you need a grammar checker to polish your writing, want to convert JPG to PDF for document sharing, or need to merge PDFs into a single file, our tools handle it all without uploading your data to any server. Every tool is designed with privacy in mind — your files and text never leave your device.
Our PDF tools let you merge, compress, split, and convert PDF documents in seconds. Need to reduce a large PDF for email? Our PDF compress tool strips metadata and optimizes structure. Converting images? The JPG to PDF converter handles multiple images at once, while PDF to JPG exports every page as a high-quality image.
For image editing, our image compressor reduces photo sizes to exact targets — perfect for web uploads and email attachments. The image resizer includes social media presets for Instagram, YouTube, and Facebook. Convert between formats with our PNG to JPG and JPG to PNG converters, complete with quality controls and batch processing.
Our AI writing tools include a powerful grammar checker that catches spelling errors, punctuation mistakes, and syntax issues instantly. All processing happens locally using JavaScript — no API calls, no data sharing, and no word limits. Zylo Tools is built for professionals, students, and anyone who values speed, privacy, and simplicity.
Why Choose Zylo Tools?
Built for speed, accuracy, and ease of use
Lightning Fast
Instant calculations with no loading time. Optimized for performance.
Accurate Results
Precise calculations using proven mathematical formulas.
Works Everywhere
Fully responsive on desktop, tablet, and mobile. Works in all modern browsers.
Latest from Blog
Tips, guides, and insights about finance, health, and productivity
How to Calculate EMI: Complete Guide
Learn the EMI formula and understand how loan EMIs are calculated with practical examples.
BMI Guide: Understanding Your Body Mass Index
Complete guide to understanding BMI, healthy ranges, and tips for maintaining ideal weight.
Best Investment Tools for Smart Planning
Discover the top tools for investment planning including SIP calculators and portfolio trackers.