UlvixorWhat do you need to do today?
Search over 60 free tools. Everything runs in your browser — your data never leaves your device.
Search tools
Search all of Ulvixor's tools by name or keyword.
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🔥 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
JSON 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.
Data Tools
CSV 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.
Text Tools
Word 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.
Calculators
Percentage 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.
File Tools
PDF 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.
Generators
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.
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.