All Tools
JSON Formatter
Format, minify and validate JSON text
Timestamp Converter
Convert Unix timestamps and date time
MyBatis SQL Restore
Restore MyBatis log placeholders and parameters into complete, formatted SQL
AI Copy Polisher
Improve copywriting with AI
Image Compressor
Compress image files and download the result
URL Encoder Decoder
Encode and decode URL percent-escaped text locally
Base64 Text Encoder Decoder
Convert Unicode text and Base64 locally
JWT Decoder
Decode JWT header and payload locally
UUID/GUID Generator
Generate UUID v4 values in batch
SHA Hash Generator
Generate SHA-256 and SHA-512 text hashes
Word Counter
Count characters, Chinese characters, English words, lines and paragraphs
Case Converter
Convert text between common case and naming formats
Text Cleaner
Clean duplicate lines, blank lines, trailing spaces and optionally sort
Regex Tester
Test regular expressions against text
Text Extractor
Extract emails, URLs, phone numbers and IPv4 addresses from text
CSV to Markdown Table
Convert CSV data to Markdown tables
Markdown to HTML
Convert common Markdown to safe HTML snippets
HTML Entity Encoder Decoder
Convert HTML special characters and entities
Date Calculator
Calculate date arithmetic and day differences
XML Formatter Validator Minifier
Format, validate and minify XML locally
YAML Formatter Validator
Format YAML configuration and check common issues locally
JSON YAML Converter
Convert JSON and YAML configuration formats
JSON XML Converter
Convert JSON and XML data formats
CSV JSON Converter
Convert CSV and JSON with header mapping
CSV TSV Table Viewer
Preview CSV and TSV table data locally
SQL Formatter Minifier
Format and minify SQL snippets without execution
HTML Formatter Minifier
Format and minify HTML snippets without executing scripts
CSS Formatter Minifier
Format and minify CSS stylesheets
JavaScript TypeScript Formatter Minifier
Format and minify JS/TS snippets without executing code
Cron Parser Generator
Parse five-field Unix Cron expressions
Text JSON Diff Checker
Compare text or normalized JSON differences
JSONPath XPath Tester
Test JSONPath and XPath expressions locally
URL Parser Query Inspector
Inspect URL structure and query parameters
Password Generator Strength Checker
Generate passwords with browser secure randomness and estimate strength
HMAC Signature Generator
Generate HMAC signatures locally with multiple encodings
Multi Hash Checksum Generator
Generate SHA and CRC32 digests for text or files
Base64 File Image Encoder Decoder
Encode and decode files, images and text as Base64
QR Code Generator
Generate QR codes for text and links locally
Image Crop Resize Rotate
Preview and transform images locally
Image Format Converter
Convert PNG, JPEG and WebP images locally
Color Picker Converter Palette
Convert HEX, RGB and HSL colors and build palettes
SVG Optimizer Formatter
Clean, minify and preview SVG safely
PDF Merge Sort
Select and organize PDF files for local merging
PDF Split Extract Delete Rotate
Split, extract, delete and rotate PDF pages locally
Image PDF Converter
Convert images and PDF pages locally
Basic Calculator
A local calculator for arithmetic, decimals, percent, backspace and history
Unit Converter
Convert length, weight, temperature and data size units
Percentage Calculator
Calculate ratios, growth rates, discounts and changes
Loan Compound Interest Calculator
Estimate loan payments, interest and compound growth
Pomodoro Timer
Standard Pomodoro timer with focus and break cycles and alarm reminders
URL Safe Slug / Pinyin Slug Generator
Generate URL-safe slugs with Chinese as Pinyin, Unicode, or ASCII-only cleanup
Countdown Timer
Set a duration and count down with an alarm reminder
Stopwatch
Count up with millisecond precision and lap timing
PDF Compressor
Safely rewrite PDFs locally, show size change and download the result
UTM Link Builder
Build campaign links with UTM parameters
Add Page Numbers to PDF
Add page numbers to selected PDF pages locally
PDF Watermark
Add text watermarks to PDFs locally
PDF Signature
Place a PNG/JPEG signature image onto a PDF locally
PDF Form Filler
Fill AcroForm PDFs locally from a JSON field map
PDF Text Extractor
Extract selectable PDF text locally and download TXT
Image Compressor
Compress images locally and show output size
Batch Image Resizer
Batch resize images locally and download the results
HEIC to JPG/PNG Converter
Convert HEIC/HEIF images to JPG or PNG locally
EXIF Viewer Remover
Inspect and remove image EXIF metadata locally
JSON Schema Validator
Validate JSON data against JSON Schema with path diagnostics
JSON to TypeScript
Infer TypeScript interfaces from JSON samples
Scientific Calculator
Local calculator for trigonometry, logarithms, parentheses and powers
BMI Calculator
Calculate BMI and category in metric or imperial units
GPA Calculator
Calculate GPA from grades and credits
Grade Calculator
Calculate weighted grades or required final scores
Time Zone Converter
Convert date time between IANA time zones
Favicon Generator
Generate multi size favicon PNG files from an image
SVG to PNG
Render SVG files to PNG images
Image Watermark Tool
Add text watermarks to images and download PNG output
Image Redactor / Blur
Mask or blur selected areas of an image
QR Code Reader
Read QR code images locally in the browser
Barcode Generator
Generate downloadable barcode SVG files
Barcode Reader
Read barcode images locally in the browser
PDF Cropper
Crop visible PDF page boxes by margins
Color Contrast Checker
Calculate WCAG contrast ratio between foreground and background colors
CSS Gradient Generator
Generate copyable linear-gradient CSS
CSS Grid/Flex Layout Generator
Generate Grid or Flex layout CSS from controls
Lorem Ipsum Generator
Generate placeholder text for prototypes and layout testing
Markdown Table Editor
Convert and preview CSV and Markdown tables
Age Calculator
Calculate age and elapsed days from a birth date
Tip Calculator
Calculate tip, total and per-person amount from bill, rate and people
PDF Text and Fingerprint Compare
Compare two PDFs by page count, text layer, size and content fingerprint
PDF Page to Image
Export PDF pages as PNG images
PDF to Markdown
Generate Markdown drafts from the text layer of PDFs
PDF Text Annotator
Add text annotations to selected PDF pages
Solid Color Background Remover
Make matching solid-color background pixels transparent by tolerance
Meme Generator
Add top and bottom bold text to images and export
Profile Photo Cropper
Upload an image, drag the crop box, export at crop size by default, or set a fixed size.
Photo Collage Maker
Create downloadable grid collages from multiple images
Audio Cutter
Cut audio ranges by start and end seconds
Random Number Generator
Generate one or more random integers within a range
IP Subnet Calculator
Parse IPv4 CIDR and calculate network, mask and broadcast address
HTML to Markdown
Convert common HTML snippets into Markdown drafts
Roman Numeral Converter
Convert between decimal numbers and Roman numerals
Word Frequency Counter
Count word frequency in text and sort by occurrences
PDF Metadata Cleaner
Clean PDF metadata such as title, author, subject and keywords
PDF Flatten
Flatten PDF form fields and appearances into normal page content