Java Code Masking Tool
Mask sensitive information while preserving Java and Spring Boot code structure.
Open toolBrowser-based developer utilities
Make everyday development easier in your browser.
A growing collection of utilities for masking code and data, testing devices, converting files, viewing data, generating values, and comparing changes.
- Local browser processing first
- No input data sent to our servers
- No installation required
Code & Data Masking Tools
Mask or anonymize sensitive information while preserving the original structure.
SQL Masking Tool
Mask table names, column names, values, and comments with database-specific syntax support.
Open tool
JSON Masking Tool
Mask keys, strings, and numbers while preserving nested JSON structures.
Open tool
Log Masking Tool
Mask sensitive information in Log4j, Syslog, JSON Lines, and access logs.
Open tool
Vue Code Masking Tool
Mask Vue Single File Components while preserving their template, script, and style structure.
Open tool
React Code Masking Tool
Mask React JSX and TSX code while preserving component structure.
Open tooljQuery Code Masking Tool
Mask jQuery code while preserving selectors and code structure.
Open tool
Python Code Masking Tool
Mask Python classes, functions, variables, strings, numbers, and comments.
Open tool
C Code Masking Tool
Mask C structs, functions, variables, strings, numbers, and comments while preserving code structure.
Open tool
C++ Code Masking Tool
Mask C++ classes, functions, variables, strings, numbers, and comments while preserving code structure.
Open tool
C# Code Masking Tool
Mask C# classes, methods, variables, strings, numbers, and comments.
Open tool
TypeScript Code Masking Tool
Mask TypeScript types, functions, variables, strings, numbers, and comments while preserving code structure.
Open tool
PHP Code Masking Tool
Mask PHP classes, functions, variables, strings, numbers, and comments.
Open tool
VB.NET Code Masking Tool
Mask VB.NET classes, methods, variables, strings, numbers, and comments.
Open tool
VBA Code Masking Tool
Mask VBA procedures, variables, values, and comments used in Excel and Access.
Open tool
Rust Code Masking Tool
Mask Rust types, functions, variables, strings, numbers, and comments.
Open tool
COBOL Code Masking Tool
Mask program names, sections, paragraphs, data items, values, and comments in fixed or free format.
Open tool
Bash Script Masking Tool
Mask functions, variables, strings, numbers, and comments while preserving the shebang.
Open tool
Ruby Code Masking Tool
Mask Ruby classes, methods, variables, strings, numbers, and comments.
Open tool
Swift Code Masking Tool
Mask Swift types, functions, variables, strings, numbers, and comments.
Open tool
Objective-C Code Masking Tool
Mask Objective-C classes, methods, variables, strings, numbers, and comments.
Open tool
XML Masking Tool
Mask element text, attribute values and CDATA while maintaining hierarchy, namespace and formatting.
Open tool
CSV/TSV masking tool
Mask sensitive information in columns and cells while keeping column configuration and quotes.
Open toolTesting Tools
Test input patterns, connected devices, and your browser environment.
Regular Expression Tester and Replace Tool
Test JavaScript regular expression matches, capture groups, and replacements.
Open toolJSONPath Tester | Search and Extract JSON Values
Search JSON with JSONPath and inspect values, types, normalized paths, and JSON Pointers directly in your browser.
Open toolJSON Schema Validator
Validate JSON against Draft 2020-12 or Draft-07 schemas and inspect errors with JSON Pointers directly in your browser.
Open toolCharacter Counter and Text Statistics Tool
Count characters without whitespace, lines, words, bytes, and more as you type.
Open toolKeyboard Tester
Test keystrokes, key chatter, simultaneous key presses, and Caps Lock.
Open toolWebcam Tester
Check webcam footage, resolution, recordings, and snapshots.
Open toolMicrophone Tester
Check microphone input volume, the frequency spectrum, and recordings.
Open toolClock Drift Checker
Compare the device clock and browser time zone with UTC time from this site.
Open toolIP Address and Connection Checker
Check your public IP address, approximate region, ASN, network details, and browser information.
Open toolonline pomodoro timer
Switch between work and breaks, and manage your tasks, notifications, and focus time for the day right in your browser.
Open toolMIDI keyboard input tester
Check notes, velocity, simultaneous presses, pedals, and CC input for keys 25, 49, 61, and 88.
Open toolgamepad input tester
Check PlayStation/Xbox/retro/arcade type buttons, sticks, and trigger inputs.
Open toolmouse input tester
Check for clicks, wheels, movement paths, chatter, and static jitter.
Open toolDead Pixel and Screen Uniformity Test
Display solid colors and 1px patterns full-screen to check for dead pixels, stuck pixels, brightness unevenness, and color unevenness.
Open toolDisplay refresh rate/FPS measurement tool
Check the effective Hz, FPS, frame time, jitter, and dropped frames from the browser's drawing cycle.
Open toolDevice and Browser Information Checker
Check your operating system, browser, screen resolution, logical CPU count, estimated memory, GPU, and Web API support directly in your browser.
Open toolCookie Security Analyzer
Parse Cookie and Set-Cookie values and review Secure, HttpOnly, SameSite, expiration, and scope attributes.
Open toolHTTP Header Analyzer
Parse request and response headers and review CSP, CORS, caching, cookies, and potentially sensitive values.
Open toolUser-Agent Analyzer
Identify the browser, OS, device, engine, and possible WebView or bot indicators from a User-Agent string.
Open toolX (Twitter) Shadowban and Visibility Checker
Compare how an X profile, search results, recent posts, and replies appear from the account owner, another account, and while logged out.
Open toolConversion Tools
Convert files locally in your browser without uploading them.
Audio File Converter
Convert WAV, MP3, and OGG Vorbis formats entirely in your browser.
Open toolVideo Audio Extractor
Extract audio from MP4, WebM, MOV, and other videos, then save it as MP3, WAV, or OGG.
Open toolAudio and Image to Video Converter
Combine a background image with audio to create an MP4 or WebM video entirely in your browser.
Open toolImage File Converter
Convert PNG, JPEG, WebP, and BMP formats entirely in your browser.
Open toolVideo and GIF Frame Extractor
Save every frame, or frames at a chosen interval, from MP4, WebM, MOV, and GIF files as images.
Open toolVideo to GIF Converter
Choose the video range, frame rate, dimensions, and color count, then save an animated GIF.
Open toolImage data mosh/glitch processing tool
Create glitch images with block shifting, RGB separation, afterimages, and noise in your browser.
Open toolVideo Datamosh & Glitch Effects Tool
Create glitch videos with afterimages, block shifting, and RGB separation in your browser.
Open toolConvert CSV/TSV to TXT | Text conversion tool
Convert tabular data into delimited text, fixed-width text, or key-value TXT format.
Open toolJSON formatting/compression/syntax checking tool
Performs JSON indentation formatting, single line compression, and syntax checking with error locations.
Open toolcURL code conversion tool
Converts cURL to HTTP request code in 8 languages including JavaScript, Python, and Java.
Open toolBase number conversion tool | Binary number, Decimal number, Hexadecimal number, Two's complement number
Convert between 2 to 36 hexadecimal integers and check 8 to 64 bit 2's complement numbers.
Open toolYAML formatting, syntax checking, JSON conversion tool
Maintain comments and anchors as much as possible, and perform YAML formatting, validation, and JSON conversion.
Open toolXML formatting, syntax checking, compression tools
Format and compress XML while maintaining namespace, CDATA, comments and mixed content.
Open toolSQL formatting, compression, syntax checking tool
We will check the SQL formatting, one-line compression, basic syntax with 6 types of DB dialects.
Open toolBase64 Encoder / Decoder
Convert strings and files to Base64 and Base64 URLs to restore them to original text and files.
Open toolURL Encoder / Decoder
Encode URL, path, and query values for each application and check the URL structure.
Open toolURL analysis and query parameters verification tool
Break down a URL into components and check duplicate queries, before-and-after encoding, and security considerations.
Open toolJWT Decoder JWT Analysis and Expiration Tool
Analyze the Header/Payload of JWT to check the expiration date, start time, and dangerous settings.
Open toolUNIX Timestamp Converter
Unix, milliseconds, UTC, and TimeZone are converted to the time of the browser.
Open toolCIDR and Subnet Calculator
Calculate IPv4 and IPv6 network ranges, subnet masks, address counts, subnet splits, and IP membership directly in your browser.
Open toolMarkdown/HTML mutual conversion tool
Switch between Markdown to HTML and HTML to Markdown and convert between them while previewing.
Open toolSVG to PNG/JPEG/WebP Converter
Convert SVG files or markup to images with configurable size, background, and quality.
Open toolchmod Permission Calculator
Convert between octal, rwx notation, and checkboxes, then generate chmod commands and review risky permissions.
Open toolSVG Optimizer and Compressor
Optimize and compress SVG files in your browser while comparing the original and optimized rendering, file size, structure, and safety settings.
Open toolGenerator Tools
Generate QR codes, hashes, color palettes, and other useful values.
QR Code Generator and Reader
Generate QR codes and scan QR codes from images entirely in your browser.
Open toolSecure Password Generator
Choose a length and character sets to generate passwords with a cryptographically secure random number generator.
Open toolHash Generator and Checker
Generate hashes for text or files and compare them with an existing hash.
Open toolColor Picker and Code Converter
Select colors, convert formats, generate color schemes, and check contrast.
Open toolBarcode generation/reading tool
Generates JAN, EAN, UPC, Code 128, etc., and reads images/cameras.
Open toolUUID generation/verification tool
Generate UUID v4 and v7 in bulk, convert format, save, and verify version, duplication, and generation date and time of existing UUID.
Open toolGUID generation/verification tool
Generate GUIDs for C#, .NET, and SQL Server in bulk and verify D, N, B, P, and X formats and byte order.
Open toolSSH key generation tool
Generate an Ed25519/RSA SSH key in your browser and save it in OpenSSH format.
Open toolFancy Text and Unicode Font Generator
Converts letters and numbers to 21 types of Unicode characters, including bold, cursive, and enclosed characters.
Open toolZalgo text generation/cancellation tool
Specify the position and strength of combined characters to generate and cancel garbled text.
Open toolHTML Web Archive Generator
Process HTML code or a local HTML file, add archive metadata, and save it locally as a web archive.
Open toolJSON Schema Generator
Generate Draft 2020-12 or Draft-07 JSON Schema from one or more JSON samples directly in your browser.
Open toolCron-type creation and execution date check tool
Create and verify the expression of Cron and Quartz with Unix and seconds, and check the next run time of TimeZone.
Open tool.gitignore Generator
Combine templates for languages, frameworks, IDEs, and operating systems, then review duplicate or potentially dangerous rules.
Open toolAPI Mock Data Generator
Generate reproducible API test data from a JSON sample by configuring field rules, output shape, item count, locale, and seed in your browser.
Open toolViewer Tools
Inspect file contents locally in your browser without uploading them.
CSV and TSV File Viewer
Open CSV and TSV data in a table with search, column sorting, and pagination.
Open toolSQL Database File Viewer
Inspect SQL database tables, schemas, and data in read-only mode.
Open toolMarkdown preview/viewing tool
Display Markdown in a GitHub style, with table of contents, search, and HTML saving within the browser.
Open toolTeX/LaTeX preview/viewer
Parse TeX code and .tex files for basic document structure, mathematical formulas, and syntax errors right in your browser.
Open toolASCII code table/character code reverse lookup tool
Displays a list of ASCII 0 to 127 and searches by character, decimal, hexadecimal, binary, and control character name.
Open toolUnicode code table/character code search tool
Search character names, blocks, and code points, then check encoding notation and normalization results.
Open toolEmoji list/search/copy tools
Search for emojis in Japanese, English, and Unicode codes, and check copying and code notation.
Open toolList of HTTP status codes, meanings, and countermeasures
Search and compare the meanings, causes, and concepts of retries and caching for HTTP 100-511.
Open toolList of SQL reserved words/keywords
Search and compare reserved words in major DBs and check if they can be used in table and column names.
Open toolMIME type list/extension search tool
Searches for MIME types and extensions, generates Content-Type headers and identifies files.
Open toolHTML entity list/character reference conversion tool
Search special characters by name, Unicode, or numeric reference, and encode or decode them.
Open toolLinux command list/search cheat sheet
Search 180 Linux commands by purpose, authority, and risk level, and check the syntax and execution examples.
Open toolPDF editing tools
Add text, images, and signatures to PDFs, rotate, rearrange, and combine pages.
Open toolJSON Tree Viewer
View JSON in a collapsible hierarchical tree and search and check keys, values, JSONPaths, and JSON Pointers.
Open toolComparison Tools
Visualize differences between text, files, and images.