Test data
CPF/CNPJ Generator and Validator
Generate and validate mathematically valid Brazilian CPF and CNPJ numbers for software testing.
Open tool →127 Tools
A catalog for documents, development, productivity and QA
Browse 127 free tools by category with search, favorites and local processing.
Test data
5 tools
Test data
Fake Data Generator
Create fictional JSON or CSV records with names, reserved emails, phone numbers and identifiers.
Open tool →Test data
UUID Generator
Generate random UUID v4 values for databases, APIs and automated tests.
Open tool →Test data
Random String Generator
Create configurable strings for fictional tokens, fields and boundary tests.
Open tool →Test data
Test Text Generator
Generate words, sentences and paragraphs for fields, reports and layout testing.
Open tool →JSON and APIs
11 tools
JSON and APIs
JSON Formatter and Validator
Format, validate, sort and minify JSON directly in your browser.
Open tool →JSON and APIs
JSON Compare Tool
Compare two JSON documents and find differences by path, type and value.
Open tool →JSON and APIs
JSON to CSV Converter
Convert JSON arrays to CSV and CSV files back to JSON.
Open tool →JSON and APIs
JWT Decoder
Decode JWT headers and payloads without sending the token to a server.
Open tool →JSON and APIs
cURL Request Builder
Build cURL commands with method, headers, query parameters and request body.
Open tool →JSON and APIs
HTTP Status Code Reference
Look up HTTP status codes, meanings and common API use cases.
Open tool →JSON and APIs
JSON Path Lookup
Read values using dot notation and array indexes.
Open tool →JSON and APIs
JSON to YAML Converter
Convert objects between JSON and YAML directly in your browser.
Open tool →JSON and APIs
JSON Schema Validator
Validate JSON against type, required-field, enum and range rules.
Open tool →JSON and APIs
JSON Schema Generator
Create a starter JSON Schema from a JSON example.
Open tool →JSON and APIs
OpenAPI and Swagger Validator
Analyze OpenAPI documents in JSON or YAML and check essential structure.
Open tool →XML and automation
2 tools
XML and automation
XML Formatter and Validator
Validate, format and minify XML documents locally.
Open tool →XML and automation
CSS Selector and XPath Tester
Test CSS selectors and XPath expressions against an HTML snippet.
Open tool →Text and encoding
6 tools
Text and encoding
Base64 Encode and Decode
Encode and decode UTF-8 text using Base64.
Open tool →Text and encoding
URL Encode and Decode
Encode characters for URLs and decode them back.
Open tool →Text and encoding
HTML Escape and Unescape
Convert special characters to HTML entities and restore the original text.
Open tool →Text and encoding
Line-by-Line Text Compare
Compare two texts and identify added, removed or changed lines.
Open tool →Text and encoding
Regular Expression Tester
Test regular expressions, flags, groups and matches.
Open tool →Text and encoding
SHA Hash Generator
Calculate SHA-256, SHA-384 and SHA-512 hashes locally.
Open tool →Text and productivity
8 tools
Text and productivity
Word and Character Counter
Count characters, words, lines, bytes and estimated reading time.
Open tool →Text and productivity
Uppercase, Lowercase and Title Case
Convert text between uppercase, lowercase, title case and sentence case.
Open tool →Text and productivity
Remove Accents from Text
Normalize accented characters while preserving the rest of the content.
Open tool →Text and productivity
Remove Duplicate Lines
Remove repeated lines while keeping the first occurrence.
Open tool →Text and productivity
Sort Text Lines
Sort lines alphabetically, numerically, by length or randomly.
Open tool →Text and productivity
Find and Replace Text
Replace literal text or regular-expression matches with a preview.
Open tool →Text and productivity
Markdown Editor with Preview
Write Markdown, preview sanitized HTML and export the result.
Open tool →Text and productivity
Markdown Table Generator
Create Markdown tables from pasted data or editable cells.
Open tool →Development
9 tools
Development
Timestamp Converter
Convert Unix timestamps, ISO 8601 values and local dates.
Open tool →Development
Basic SQL Formatter
Format common SQL queries and minify whitespace.
Open tool →Development
URL and Query String Analyzer
Split a URL into protocol, host, path, fragment and query parameters.
Open tool →Development
YAML Formatter and Validator
Validate, format and minify YAML for configuration files and APIs.
Open tool →Development
CSV Viewer and Editor
Open CSV files, edit cells, choose a delimiter and export again.
Open tool →Development
CSV Compare Tool
Compare rows and columns in two CSV files and identify differences.
Open tool →Development
Cron Expression Builder
Build common Cron expressions and view a readable explanation.
Open tool →Development
Environment File Formatter
Format environment variables, detect duplicates and mask secrets in previews.
Open tool →Development
CSV Delimiter Converter
Convert comma, semicolon, tab or pipe delimiters while preserving quoted fields.
Open tool →Design and accessibility
4 tools
Design and accessibility
Color Contrast Checker
Calculate contrast ratio and check WCAG AA and AAA criteria.
Open tool →Design and accessibility
HEX, RGB and HSL Converter
Convert colors between HEX, RGB and HSL and preview the result.
Open tool →Design and accessibility
CSS Gradient Generator
Create linear gradients and copy ready-to-use CSS.
Open tool →Design and accessibility
CSS Box Shadow Generator
Adjust shadow offset, blur, spread and opacity with a live preview.
Open tool →Images
13 tools
Images
Image Resizer
Resize and convert images locally without uploading them.
Open tool →Images
Image Compressor
Reduce JPG, PNG or WebP file size by adjusting dimensions and quality.
Open tool →Images
JPG, PNG and WebP Converter
Convert images between common formats directly in your browser.
Open tool →Images
Image to Base64 Converter
Convert images to Data URLs and restore images from Base64.
Open tool →Images
Favicon Pack Generator
Create PNG icons in multiple sizes and ready-to-use HTML markup.
Open tool →Images
Crop Image
Crop an image using coordinates or an aspect ratio.
Open tool →Images
Rotate and Flip Image
Rotate, flip horizontally or vertically and export the image.
Open tool →Images
Remove Image EXIF Metadata
Re-encode JPG, PNG or WebP images to remove embedded metadata.
Open tool →Images
Image Color Palette Extractor
Find dominant colors in an image and copy HEX values.
Open tool →Images
Image Color Picker
Click any point in an image to get HEX, RGB and HSL values.
Open tool →Images
Placeholder Image Generator
Create placeholder images with custom size, colors and text.
Open tool →Images
Batch Image Resizer
Resize multiple images using the same width, height or percentage.
Open tool →Images
Aspect Ratio Calculator
Calculate proportional dimensions and ratios such as 16:9, 4:3 and 1:1.
Open tool →PDF and documents
14 tools
PDF and documents
Merge PDF Files
Combine multiple PDFs into one file and set their order before downloading.
Open tool →PDF and documents
Split and Extract PDF Pages
Extract pages or ranges and create a PDF or ZIP with separate files.
Open tool →PDF and documents
Organize and Delete PDF Pages
Reorder, remove and assemble a new version of a PDF document.
Open tool →PDF and documents
Convert Images to PDF
Turn JPG, PNG and WebP images into a PDF with configurable page size and margins.
Open tool →PDF and documents
Convert PDF to Images
Render PDF pages as PNG or JPEG and download them in a ZIP file.
Open tool →PDF and documents
PDF Compressor
Reduce PDF size by reprocessing pages in your browser.
Open tool →PDF and documents
Rotate PDF Pages
Rotate all PDF pages or selected ranges by 90°, 180° or 270°.
Open tool →PDF and documents
Add Watermark to PDF
Add a text watermark with configurable position, size and opacity.
Open tool →PDF and documents
Add Page Numbers to PDF
Add page numbers to the header or footer of every page.
Open tool →PDF and documents
Extract Text from PDF
Extract available text from PDF files and download it as TXT.
Open tool →PDF and documents
Remove PDF Metadata
Clear title, author, subject, keywords and internal dates from a PDF.
Open tool →PDF and documents
Compare Two PDFs
Extract and compare text from two PDFs page by page.
Open tool →PDF and documents
Text to PDF Converter
Turn plain text into a PDF with configurable page size, margins and font size.
Open tool →PDF and documents
Lined and Grid PDF Generator
Create blank, lined, dotted or grid paper PDFs for printing.
Open tool →Calculators
8 tools
Calculators
Percentage Calculator
Calculate percentages, discounts, increases and change between values.
Open tool →Calculators
Rule of Three Calculator
Solve direct and inverse proportions with a calculation explanation.
Open tool →Calculators
Unit Converter
Convert length, mass, area, volume, temperature and digital storage units.
Open tool →Calculators
Simple Interest Calculator
Calculate interest, total amount and proportional rates.
Open tool →Calculators
Average Calculator
Calculate arithmetic mean, weighted mean, median, minimum and maximum.
Open tool →Calculators
File Size Converter
Convert bytes, KB, MB, GB, KiB, MiB and GiB.
Open tool →Calculators
Data Transfer Time Calculator
Estimate how long a file transfer takes at a given connection speed.
Open tool →Calculators
Compound Interest Calculator
Simulate principal, rate, periods and recurring contributions with a growth table.
Open tool →Date and time
6 tools
Date and time
Date Difference Calculator
Calculate calendar days, weeks and business days between two dates.
Open tool →Date and time
Age Calculator
Calculate age in years, months and days for a reference date.
Open tool →Date and time
Business Day Counter
Count business days between dates and optionally add holidays.
Open tool →Date and time
Hours and Minutes Converter
Convert decimal hours and minutes and add or subtract durations.
Open tool →Date and time
Monthly Calendar Generator
Create a printable calendar for any month and year.
Open tool →Date and time
Time Zone Converter
Convert a date and time between IANA zones such as São Paulo, Lisbon and New York.
Open tool →Productivity
1 tools
Productivity
Random Name and Number Picker
Draw items from a list or numbers from a range without repetition.
Open tool →QR codes and barcodes
3 tools
QR codes and barcodes
QR Code Generator
Create QR codes for text, URLs, Wi-Fi networks and contacts, then download PNG.
Open tool →QR codes and barcodes
QR Code Reader from Image
Read QR codes from JPG, PNG or WebP files locally.
Open tool →QR codes and barcodes
Barcode Generator
Generate Code 128, EAN, UPC, Code 39 and other barcode formats as SVG.
Open tool →QA and automation
24 tools
QA and automation
BDD/Gherkin Scenario Generator
Build Feature, Scenario and Scenario Outline structures for BDD specifications.
Open tool →QA and automation
Boundary Value Generator
Create values below, at and above numeric or length boundaries.
Open tool →QA and automation
JSON to SQL INSERT Generator
Convert JSON objects into SQL INSERT statements with basic dialect options.
Open tool →QA and automation
API Testing Checklist Generator
Build checks for methods, authentication, contracts and error scenarios.
Open tool →QA and automation
Pairwise Test Generator
Generate a reduced combination set that covers value pairs.
Open tool →QA and automation
Decision Table Builder
Build conditions, actions and rules for business scenarios.
Open tool →QA and automation
Equivalence Partition Generator
Organize valid and invalid classes and choose representative test values.
Open tool →QA and automation
State Transition Modeler
Define states, events and transitions and generate a coverage matrix.
Open tool →QA and automation
Risk Matrix for Testing
Prioritize scenarios by probability, impact and exposure.
Open tool →QA and automation
Test Coverage Calculator
Calculate requirement, execution, automation and defect coverage.
Open tool →QA and automation
Exploratory Testing Checklist
Build a charter with focus, risks, data, heuristics and evidence.
Open tool →QA and automation
API Test Case Generator
Generate positive, negative, security, contract and performance scenarios per endpoint.
Open tool →QA and automation
JSON Mock Response Generator
Build mock responses with status, headers, pagination and JSON body.
Open tool →QA and automation
cURL to RestAssured Converter
Convert common cURL commands into Java RestAssured examples.
Open tool →QA and automation
Test Case Generator
Create test cases with objective, preconditions, steps, data and expected result.
Open tool →QA and automation
Bug Report Generator
Structure title, environment, steps, actual result, expected result, severity and evidence.
Open tool →QA and automation
Test Plan Generator
Build scope, strategy, risks, environments, criteria and an initial schedule.
Open tool →QA and automation
Regression Testing Checklist
Create a regression list by area, risk, integrations and platforms.
Open tool →QA and automation
Requirements Traceability Matrix
Link requirements, risks, test cases, execution and defects in CSV.
Open tool →QA and automation
HTML Test Evidence Report Generator
Create a portable report with execution details, steps, results and local images.
Open tool →QA and automation
Test Effort Estimator
Create a simple estimate using complexity, scenario count, platforms and cycles.
Open tool →QA and automation
Gherkin Syntax Validator
Check Feature, Background, Scenario, Given, When, Then and Examples structure.
Open tool →QA and automation
Test Case to Gherkin Converter
Turn preconditions, steps and expected results into a starter BDD structure.
Open tool →QA and automation
Accessibility Testing Checklist
Generate checks for keyboard, focus, contrast, forms, semantics and screen readers.
Open tool →Web and SEO
5 tools
Web and SEO
HTTP Header Analyzer
Organize headers, find duplicates and highlight caching, security and content fields.
Open tool →Web and SEO
URL Slug Generator
Turn titles into clean lowercase URL-friendly slugs.
Open tool →Web and SEO
UTM Link Builder
Build campaign URLs with source, medium, campaign, term and content parameters.
Open tool →Web and SEO
Meta Tag Generator and Preview
Create title, description, canonical and Open Graph tags with a search preview.
Open tool →Web and SEO
Robots.txt and Sitemap Generator
Create basic robots.txt and sitemap files for crawling and URL discovery.
Open tool →Security and integrity
3 tools
Security and integrity
HMAC Generator
Calculate HMAC with SHA-256, SHA-384 or SHA-512 using Web Crypto.
Open tool →Security and integrity
File SHA Checksum
Calculate SHA-256, SHA-384 or SHA-512 checksums for local files.
Open tool →Security and integrity
Password and Passphrase Generator
Create random passwords and passphrases locally using Web Crypto.
Open tool →Portugal and Europe
5 tools
Portugal and Europe
Portuguese NIF Generator and Validator
Generate and validate mathematically valid Portuguese NIF numbers for testing.
Open tool →Portugal and Europe
Portuguese NISS Validator
Check the format and check digit of a Portuguese NISS.
Open tool →Portugal and Europe
IBAN Validator
Validate IBAN structure and MOD-97 checksum for multiple countries.
Open tool →Portugal and Europe
European VAT Format Validator
Check country prefix and basic format of European VAT numbers.
Open tool →Portugal and Europe
Portugal Business Day Counter
Count business days using Portuguese national holidays calculated by year.
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