UlvixorAll tools
Free, no sign-up, no limits. Everything runs in your browser.
🔥 Most used
JSON Formatter & Validator
Format, validate, and minify JSON instantly.
Secure Password Generator
Create random, secure passwords with customizable length and character types.
QR Code Generator
Turn text or links into a QR code and download it as a PNG instantly.
Merge PDF (File Combiner)
Combine several PDF files into one, in the order you choose, without uploading anything online.
CSV to JSON Converter
Convert CSV files to JSON instantly, right in your browser.
Percentage Calculator
Calculate percentages, what percent one value is of another, and percentage changes between two numbers.
Word Counter
Count words, characters, sentences, and paragraphs in real time.
Image Compressor
Reduce an image's file size by adjusting the quality, directly in your browser.
Developer Tools
View categoryJSON Formatter & Validator
Format, validate, and minify JSON instantly.
Base64 Encoder & Decoder
Encode text to Base64 or decode it back, with full Unicode support.
UUID v4 Generator
Generate one or many random UUID v4s instantly.
JWT Decoder
Decode a JWT's header and payload and view them as JSON.
Regular Expression Tester
Test regular expressions in real time and inspect matches and groups.
XML Validator
Validate an XML document's syntax and view it formatted.
YAML Validator
Validate YAML syntax and view the parsed structure as JSON.
Cron Expression Generator
Build cron expressions with guided controls or decode an existing one in plain English.
URL Encoder & Decoder
Encode or decode text for use in URL parameters.
HTML Formatter
Indent and clean up HTML to make it readable, preserving pre, script, and style.
SQL Formatter
Format SQL queries with support for multiple dialects.
Data Tools
View categoryCSV to JSON Converter
Convert CSV files to JSON instantly, right in your browser.
JSON to CSV Converter
Convert a JSON array of objects to CSV instantly.
CSV Cleaner & Duplicate Remover
Trim whitespace and remove duplicate rows from a CSV instantly.
Date Format Converter
Convert dates between common formats, ISO 8601, and Unix timestamp.
Merge CSV Columns
Combine two or more CSV columns into one, with the separator you choose.
Normalize Text Data in a CSV
Trim spaces, change letter case, and strip accents in the CSV columns you choose.
Split CSV Columns
Split one CSV column into several new columns based on the separator you choose.
Markdown to HTML Converter
Convert Markdown to HTML instantly, with a live preview in your browser.
CSV to Excel Converter
Convert a CSV into a downloadable Excel (.xlsx) file instantly.
Excel to CSV Converter
Upload an Excel (.xlsx or .xls) file and get its content as CSV instantly.
JSON to YAML and YAML to JSON Converter
Convert between JSON and YAML in both directions, with error validation.
JSON to XML and XML to JSON Converter
Convert between JSON and XML in both directions, right in your browser.
PDF Text Extractor
Extract the text from a PDF instantly, page by page, in your browser.
Text Tools
View categoryWord Counter
Count words, characters, sentences, and paragraphs in real time.
Character Counter
Count characters instantly and check Twitter/X, SMS, and SEO limits.
Remove Extra Spaces and Blank Lines
Remove double spaces, extra whitespace, and repeated blank lines.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
Sort Text Lines
Sort lines alphabetically, numerically, or by length, with an option to remove duplicates.
Duplicate Line Remover
Remove repeated lines while keeping the text's original order.
Text Diff Checker
Compare two texts and visually highlight the differences, word by word or line by line.
Slug Generator
Turn any text into a URL-friendly slug, stripping accents and special characters.
Calculators
View categoryPercentage Calculator
Calculate percentages, what percent one value is of another, and percentage changes between two numbers.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth.
Loan Calculator
Calculate the monthly payment, total repayment, and total interest on a loan.
Compound Interest Calculator
Calculate how your investment grows with compound interest and periodic contributions.
Date Difference Calculator
Calculate how many days, months, and years there are between two dates.
ROI Calculator
Calculate return on investment (ROI), net profit, and annualized ROI.
Profit Margin Calculator
Calculate profit margin, markup, and gross profit from price and cost.
CPM Calculator
Calculate CPM (cost per thousand impressions), or the total cost or impressions from the other values.
CPC Calculator
Calculate CPC (cost per click), total cost or clicks, and CTR for your campaigns.
ROAS Calculator
Calculate ROAS (return on ad spend) and the profit from your ad campaigns.
Engagement Rate Calculator
Calculate the engagement rate of your social media posts.
Time Calculator
Add or subtract durations in hours, minutes, and seconds with automatic carrying.
File Tools
View categoryPDF Metadata Viewer
Check a PDF file's title, author, dates, and other metadata.
PDF Page Counter
Count the pages of one or several PDF files at once.
Image Size Calculator
Check an image's dimensions and calculate a new size while keeping its aspect ratio.
Image Compressor
Reduce an image's file size by adjusting the quality, directly in your browser.
Image Converter
Convert images between PNG, JPEG, WebP, GIF, and BMP directly in your browser.
File Hash Generator
Calculate the SHA-1, SHA-256, SHA-384, or SHA-512 hash of any file.
Image to ICO Converter (Favicon)
Convert an image into a multi-resolution .ico file for use as a favicon.
HEIC to JPG/PNG Converter
Convert HEIC/HEIF photos from your iPhone to JPG or PNG directly in your browser.
Background Remover (Chroma Key)
Remove solid-color backgrounds (chroma key) from an image and download a transparent PNG.
Merge PDF (File Combiner)
Combine several PDF files into one, in the order you choose, without uploading anything online.
Word to PDF Converter
Convert a .docx file to PDF with a preview, directly in your browser.
PDF to Word Converter
Extract the text from a PDF and generate an editable Word (.docx) document.
Generators
View categorySecure Password Generator
Create random, secure passwords with customizable length and character types.
QR Code Generator
Turn text or links into a QR code and download it as a PNG instantly.
Random Number Generator
Generate random whole or decimal numbers within a range, with or without repetition.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by words, sentences, or paragraphs.
Barcode Generator
Create CODE128, EAN-13, UPC-A, or CODE39 barcodes and download them as SVG or PNG.
XML Sitemap Generator
Generate a sitemap.xml file for your website from a list of URLs.
robots.txt Generator
Create a robots.txt file with Allow/Disallow rules per user-agent and your sitemap.