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Browse all content on Yoopla: 445 free online tools, 305 insights & tutorials, 130 formulas, 207 use-cases, 111 curated lists, 305 comparisons, and topic clusters. Everything is organized by category for easy discovery.
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All Tools
View all →PDF Tools (13 tools)
View all →PDF Compressor - Reduce File Size Online | Yoopla
LiveReduce PDF file size online while maintaining quality - free and secure
Merge PDF
LiveMerge multiple PDFs into one file online for free.
Split PDF
LiveSplit PDF files or extract pages online for free.
Word to PDF
LiveConvert Word to PDF online free — preserves formatting.
PDF to Word
LiveConvert PDF to Word online free — get editable DOCX files.
Rotate PDF
LiveRotate PDF pages by 90, 180, or 270 degrees online.
PDF to JPG
LiveConvert PDF pages to JPG images online.
JPG to PDF
LiveConvert JPG images to PDF documents online.
Unlock PDF
LiveRemove password protection from PDF files online.
Protect PDF
LiveAdd password protection to PDF files for security.
PDF Page Organizer
LiveReorder or delete PDF pages.
PDF Watermark
LiveAdd text watermark to PDF.
Image Tools (23 tools)
View all →Image Resizer - Free Online Photo & Picture Size Editor
LiveResize any image online for free — no upload required. Perfect for social media, websites, and documents.
Image Compressor
LiveReduce image file size online for free without quality loss.
PNG to JPG Converter
LiveConvert PNG to JPG online for free — instant and private.
Remove Background
LiveRemove image background online for free with AI.
OCR - Image to Text
LiveConvert images to text online with OCR technology.
JPG to PNG Converter
LiveConvert JPG to PNG online for free — instant and private.
Image Cropper
LiveCrop and cut images to custom dimensions online.
SVG to PNG
LiveConvert SVG vector images to PNG raster format.
PNG to WebP
LiveConvert PNG images to WebP format for better compression.
WebP to PNG
LiveConvert WebP images to PNG format easily online.
JPG to WebP
LiveConvert JPG images to modern WebP format online.
WebP to JPG
LiveConvert WebP images to JPG format online.
File Converters (158 tools)
View all →Binary Converter
LiveConvert between binary, decimal, octal, and hexadecimal.
Temperature Converter
LiveConvert between Celsius, Fahrenheit, and Kelvin.
Hex to Decimal Converter
LiveFree online hex to decimal converter.
Roman Numeral Converter
LiveConvert Roman numerals
Number Base Converter
LiveConvert number bases
Text to Binary Converter
LiveConvert text to binary code online.
Binary to Text Converter
LiveDecode binary code to text online.
Length & Distance Converter
LiveConvert length units
Number to Words Converter
LiveConvert numbers to written words
Kilogram to Gram Converter
LiveConvert kg to g online for free.
Kilogram to Milligram Converter
LiveConvert kg to mg online for free.
Kilogram to Pound Converter
LiveConvert kg to lb online for free.
Text Tools (32 tools)
View all →Password Generator
LiveCreate strong random passwords online for free instantly.
Lorem Ipsum Generator
LiveCreate Lorem Ipsum dummy text for layouts and mockups online.
Character Counter
LiveCount characters and words in text online for free.
Sentence Counter
LiveCount sentences in text online for free — analyze writing quality.
Word Counter
LiveCount words in text online for free — real-time word counter.
Remove Line Breaks
LiveRemove line breaks from text online for free.
Remove Duplicate Lines
LiveRemove duplicate lines from text online for free.
Sort Text Lines
LiveSort text lines online for free — multiple sort options.
Slug Generator
LiveGenerate SEO-friendly URL slugs from text online for free.
Case Converter
LiveConvert text case online for free — 9 different formats.
Markdown Editor
LiveOnline Markdown editor with live preview — write and export instantly.
Text Sorter
LiveSort text lines alphabetically or by custom order.
Developer Tools (47 tools)
View all →JSON Formatter
LiveBeautify and format JSON data instantly online.
JSON Validator
LiveCheck if your JSON is valid in one click.
Base64 Encoder
LiveConvert text to Base64 encoding online for free.
Base64 Decoder
LiveDecode Base64 strings to plain text online for free.
UUID Generator
LiveCreate random UUIDs (v4) online for free.
Timestamp Converter
LiveConvert Unix epoch timestamps to dates online for free.
QR Code Generator
LiveCreate free QR codes online for URLs, text, WiFi, and more.
URL Encoder
LiveEncode URLs and strings with percent-encoding online for free.
URL Decoder
LiveDecode URL-encoded strings online for free.
JSON to CSV Converter
LiveConvert JSON to CSV online for free — instant and accurate.
CSV to JSON Converter
LiveConvert CSV to JSON online for free — instant and accurate.
JWT Decoder
LiveDecode JWT tokens online instantly and securely.
Calculators (35 tools)
View all →Electricity Cost Calculator
LiveCalculate appliance electricity costs.
Aspect Ratio Calculator
LiveCalculate image and video aspect ratios.
Percentage Calculator
LiveCalculate percentages and percent changes online for free.
Age Calculator
LiveCalculate your age from birthdate instantly online.
Date Difference Calculator
LiveCalculate days between two dates instantly online.
VAT Calculator
LiveCalculate VAT online — add or remove tax from prices.
Loan Calculator
LiveCalculate loan payments, interest, and amortization schedules.
BMI Calculator
LiveCalculate Body Mass Index (BMI) and health metrics.
Unit Converter
LiveConvert between different units of measurement instantly.
Time Calculator
LiveCalculate time differences, add or subtract time periods.
Discount Calculator
LiveCalculate discounts, sale prices, and savings amounts.
Interest Calculator
LiveCalculate simple and compound interest earnings
SEO Tools (10 tools)
View all →Meta Tag Generator
LiveGenerate SEO meta tags for your website.
Robots.txt Generator
LiveGenerate robots.txt for search engine crawlers.
Sitemap Generator
LiveCreate XML sitemap for better SEO.
Schema Markup Generator
LiveCreate schema markup for rich search results.
Keyword Density Analyzer
LiveCalculate keyword density for SEO content analysis
Canonical Tag Generator
LiveGenerate canonical tags to prevent duplicate content
Hreflang Tag Generator
LiveGenerate hreflang tags for multilingual websites
SEO Title Generator
LiveGenerate SEO-optimized page titles
Meta Description Generator
LiveGenerate SEO-optimized meta descriptions
Open Graph Generator
LiveCreate social media meta tags
All Insights & Guides
View all →Finance (18 articles)
apr vs apy difference
Featuredhow to calculate emi
Featurednpv vs irr investment analysis
invoice best practices freelancers
Featuredcalculate meeting costs
savings goal planning
FeaturedROI
FeaturedCash Flow
FeaturedBreak-Even-Point
FeaturedCrypto Security (15 articles)
what is a bip39 seed phrase
Featureddollar cost averaging crypto
bitcoin halving explained
Featuredcrypto wallet security
Featuredcrypto market cap explained
what are satoshis
bitcoin roi calculation
Featuredcrypto profit loss calculation
bitcoin halving price impact
FeaturedDeFi (21 articles)
impermanent loss explained
Featuredyield farming strategies
Featuredliquidity pools explained
defi lending and borrowing
Featuredstablecoins defi
defi risk management
Featureddex vs cex
defi tokenomics
Featureddefi yield aggregators
Ethereum (5 articles)
Tools (22 articles)
json formatter online
Featuredcompress pdf online
Featuredconvert image format
Featuredbase64 encoder
qr code generator
password generator
Featuredmarkdown editor
color picker
compress images online
FeaturedTutorials (157 articles)
format json api
Featuredcompress image without losing quality
Featuredmerge pdf files
url encoder
hash generator
file converter online
Featuredoptimize images for web
Featuredconvert png to jpg
Featuredsplit pdf
Lists (25 articles)
free developer tools
Featuredpdf tools online
image converter online
Featuredtext tools online
code formatter online
image compression tools
Featuredjson tools
password generator tools
url encoder tools
Comparisons (22 articles)
png vs jpg
Featuredjson vs xml
Featuredwebp vs jpg
sha256 vs md5
csv vs json
base64 vs hex
uuid vs guid
markdown vs html
rgb vs hex
Alternatives (20 articles)
ilovepdf alternative
Featuredsmallpdf alternative
Featuredconvertio alternative
Featuredtinypng alternative
remove.bg alternative
jsonlint alternative
codebeautify alternative
qr code monkey alternative
lastpass generator alternative
All Tool Lists
View all →PDF Tools (3 lists)
Image Tools (10 lists)
best image compressors
best image converters
best online image editors
best image resizers
best background removers
best qr code generator tools
best image converter tools
best image compressor tools
best barcode generator tools
best ocr tools online
Developer Tools (26 lists)
best json formatters
best developer tools online
best code formatters
best regex testers
best base64 encoders
best url encoders
best code minifiers
best code beautifiers
best code validators
best diff tools
best free developer tools 2026
best json tools online
best css tools online
best html tools online
best javascript tools online
best code formatters online
best regex tools online
best api testing tools
best encoding tools online
best sql tools online
best uuid generator tools
best jwt tools online
best url tools online
best random generator tools
best code minifier tools
best code beautifier tools
File Converters (3 lists)
Text Tools (14 lists)
best text tools online
best word counters
best markdown editors
best lorem ipsum generators
best case converters
best text generators
best text comparison tools
best word counter tools
best case converter tools
best string manipulation tools
best markdown tools online
best markdown editor tools
best lorem ipsum generator
best markdown tools online
Security Tools (8 lists)
best password generators
best encryption tools
best hash generators
best online security tools
best hash generator tools
best password generator tools
best encryption tools online
best security utilities online
Utility Tools (4 lists)
Calculators (7 lists)
best online calculators
best percentage calculators
best online calculators
best percentage calculator tools
best date calculator tools
best loan calculator tools
best health calculator tools
SEO Tools (9 lists)
best free seo tools
best meta tag generators
best seo analysis tools
best meta tag generator tools
best domain checkers
best backlink analyzers
best technical seo tools
best on-page seo tools
free keyword research tools
Color Tools (7 lists)
best color pickers
best gradient generators
best color tools online
best color picker tools
best gradient generator tools
best color palette generators
best color converters online
General (2 lists)
Converters (5 lists)
Data Tools (4 lists)
Network Tools (2 lists)
Validators (3 lists)
AI Tools (1 lists)
Crypto Tools (1 lists)
Productivity Tools (1 lists)
Security (1 lists)
All Comparisons
View all →All Alternatives
View all →SmallPDF Alternatives
iLovePDF Alternatives
PDF24 Alternatives
PDFForge Alternatives
Sejda Alternatives
PDFescape Alternatives
iLoveIMG Alternatives
TinyPNG Alternatives
Compressor.io Alternatives
Remove.bg Alternatives
Canva Alternatives
Convertio Alternatives
All Formulas
View all →Mean (Average) Formula
Calculate the arithmetic mean (average) of a dataset
Variance Formula
Measure how far a set of numbers are spread out from their average
Standard Deviation Formula
Measure the amount of variation in a set of values
Median Formula
Find the middle value in a sorted dataset
Mode Formula
Find the most frequently occurring value in a dataset
Z-Score Formula
Calculate how many standard deviations a value is from the mean
Percentile Formula
Calculate the position of a value in a percentile ranking
Quartile Formula
Divide a dataset into four equal parts
Range Formula
Calculate the difference between the largest and smallest values
Interquartile Range (IQR) Formula
Measure the spread of the middle 50% of data
Coefficient of Variation Formula
Measure relative variability as a percentage
Skewness Formula
Measure the asymmetry of a probability distribution
All Use-Cases
View all →Statistics Tools for Students
Essential statistics calculators and tools for students studying mathematics, data science, and research methods
Random Generators for Teachers
Random number generators and picker tools for educators creating fair and unbiased selections
Data Tools for Developers
JSON, XML, and data conversion tools for software developers
Image Tools for Web Designers
Image optimization and conversion tools for web designers
PDF Tools for Business
PDF manipulation tools for business document management
Math Tools for Engineering Students
Advanced calculators for engineering mathematics, physics calculations, and technical problem-solving
Coding Tools for Computer Science Students
Programming utilities and code formatters for CS coursework and projects
Research Tools for Academic Researchers
Data analysis and statistical tools for academic research and publications
Language Learning Tools
Text analysis and character counting tools for language learning and writing practice
Chemistry Calculators for Students
Molecular weight, molarity, and chemical equation calculators
Exam Preparation Tools
Random generators and quiz tools for exam preparation and study sessions
Biology Lab Calculators
Dilution calculators and statistical tools for biology lab work
All Topic Clusters
View all →Statistics Tools
Probability Tools
Random Generators
Data Analysis Tools
Chart Generators
PDF Tools
Image Tools
Text Tools
Security Tools
SEO Tools
Developer Tools
Finance Tools
Video & GIF Tools
Audio Tools
Multilingual Page Directory (EN / DE / ES / FR)
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