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.
CSS Minifier
Minify CSS by removing whitespace, comments, and redundant rules.
JavaScript Minifier
Minify and compress JavaScript to reduce its file size.
Text Hash Generator (MD5/SHA)
Calculate the MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hash of a text.
Text Encoding Detector
Detect a text file's encoding (UTF-8, UTF-16, Latin-1) and fix mojibake text.
JSON to TypeScript Interface Generator
Paste a JSON sample and get the matching TypeScript interfaces, with optional fields detected automatically.
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.
EDI to JSON Converter
Convert an EDI/X12 file into structured JSON (interchange, functional group, and transaction set), right in your browser.
X12 Parser
Parse an X12 file and get its full structure as JSON, with automatic delimiter detection.
EDI Validator
Validate an EDI envelope's syntax (ISA/GS/ST and their closings) and catch structural errors instantly.
EDI Viewer
View an EDI/X12 file as a readable table, segment by segment, with a description for each one.
JSON to EDI Converter
Convert a JSON list of segments into an EDI/X12 file using the standard delimiters.
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.
Text Reverser
Reverse text by character, word, or line.
Spell Checker
Check a text's spelling in Spanish or English and get correction suggestions.
Basic Grammar Checker
Detects repeated words, incorrect punctuation/spacing, and common word confusions.
Text Summarizer
Generate an extractive summary by selecting the most relevant sentences from a text.
Document Comparator
Compare two PDF, Word, or text files and highlight the differences.
Keyword Density Checker
Analyze word and phrase frequency and density in a text, useful for SEO.
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.
VAT Calculator
Add or extract VAT from a price, using whatever rate you enter.
Discount Calculator
Calculate the final price after a discount, or the original price from the final one.
BMI Calculator
Calculate your Body Mass Index (BMI) from your weight and height.
Unit Converter
Convert length, weight, and volume between metric and imperial units.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin.
Tip Calculator
Calculate a restaurant tip and split the bill between several people instantly.
Loan Amortization Schedule Generator
Generate a loan's full amortization schedule, payment by payment, with principal and interest broken down.
Work Hours Calculator
Calculate worked hours from a clock-in and clock-out time, with breaks and overnight shifts.
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.
PDF Compressor
Reduce the file size of a scanned or photo-heavy PDF by adjusting the compression level.
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.
Split PDF
Split a PDF into individual files, one per page.
Organize PDF
Visually reorder a PDF's pages before downloading it.
Rotate PDF
Rotate specific pages of a PDF by 90, 180, or 270 degrees.
Delete PDF Pages
Delete specific pages from a PDF with a visual preview.
Extract PDF Pages
Extract only the pages you need from a PDF into a new file.
Add Watermark to PDF
Add a text watermark to every page of a PDF.
Number PDF Pages
Add automatic page numbering to a PDF, in the position you choose.
Repair PDF
Rebuild the internal structure of a damaged PDF to try to recover it.
Unlock PDF
Remove the password from a protected PDF when you know the current password.
PDF to JPG Converter
Convert each page of a PDF into a separate JPG image.
JPG to PDF Converter
Convert one or more images into a single PDF file.
Excel to PDF Converter
Convert each sheet of an Excel file into a table within a PDF.
HTML to PDF Converter
Convert HTML code into a paginated PDF document.
JPG to PNG Converter
Convert JPG images to PNG directly in your browser.
PNG to JPG Converter
Convert PNG images to JPG directly in your browser.
WebP to JPG Converter
Convert WebP images to JPG directly in your browser.
JPG to WebP Converter
Convert JPG images to WebP directly in your browser.
PNG to WebP Converter
Convert PNG images to WebP directly in your browser.
WebP to PNG Converter
Convert WebP images to PNG directly in your browser.
AVIF to JPG Converter
Convert AVIF images to JPG directly in your browser.
SVG to PNG Converter
Convert SVG files to PNG images directly in your browser.
GIF to JPG Converter
Convert the first frame of a GIF into a JPG image.
Image Resizer
Change an image's width and height, with or without preserving the aspect ratio.
Image Cropper
Visually crop the area you need from an image.
Favicon Generator
Generate a favicon.ico and an apple-touch-icon.png from your logo.
MP3 to WAV Converter
Convert an MP3 file to uncompressed WAV, directly in your browser.
WAV to MP3 Converter
Convert a WAV file to MP3, reducing its size, in your browser.
M4A to MP3 Converter
Convert M4A (AAC) audio files to MP3 directly in your browser.
FLAC to MP3 Converter
Convert lossless FLAC audio to compressed MP3 in your browser.
OGG to MP3 Converter
Convert OGG (Vorbis) audio files to MP3 directly in your browser.
Cut Audio
Trim an exact fragment out of an audio file.
Merge Audio
Combine two or more audio files into one, in the order you choose.
PDF to PowerPoint Converter
Convert each page of a PDF into a PowerPoint slide.
PDF OCR (Extract Text from Scans)
Extract text from scanned PDFs using optical character recognition.
EXIF Data Viewer & Remover
Check a photo's EXIF metadata (camera, date, GPS location) and download a copy without it.
Image Watermark
Add a text watermark to an image, with adjustable position, size, color, and opacity.
Animated GIF Maker
Combine several images into an animated GIF, in the order and frame duration you choose.
Color Palette Extractor
Upload an image and get its dominant colors in HEX and RGB, ready to copy.
Green Screen Remover (Green Chroma Key)
Automatically detects and removes green from a green screen photo, with green-spill reduction at the edges.
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.
WiFi QR Code Generator
Create a QR code that connects a phone to your WiFi network automatically when scanned, with no password typing.
WhatsApp QR Code Generator
Create a QR code that opens a WhatsApp chat directly to your number, with an optional predefined message.
vCard QR Code Generator
Create a QR code with your contact details that get added directly to a contacts app when scanned.
Google Maps QR Code Generator
Create a QR code that opens your business location on Google Maps when scanned.
Restaurant Menu QR Code Generator
Create a QR code that links directly to your restaurant's or café's digital menu.
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.
Random Text Generator
Generate nonsense words or random character strings, different from the classic Lorem Ipsum.
APA 7 Citation Generator
Generate the reference and the in-text citation in APA 7 format for websites, books, articles, videos, reports, and newspapers.
Bibliography Generator
Build a complete reference list in APA, MLA, or Chicago style from multiple sources.
CSS Gradient Generator
Create linear or radial gradients with a live preview and copy the ready-to-use CSS code.
Color Palette Generator
Generate a harmonious color palette from a base color, using rules like analogous, complementary, or triadic.