WarpNav Online Tools Site

A concise and efficient fully offline local tools site. It aggregates image processing, text tools, unit conversions, financial calculations, encryption and encoding tools, and commonly used developer tools. All calculations are performed locally, ensuring data privacy and security.

Tool Catalog
55 tools available.

Tool Catalog

Browse every tool by category or search directly to jump to the one you need.

Generate

Fast creation tools for generating assets you can use right away.

6

Random Password

Generate strong, secure random passwords online with custom length and character sets. Features local history tracking.

Custom length
Case, digits, symbols
Local history

QR Code

Free online QR code generator. Instantly convert URLs or text into custom QR codes with adjustable size and colors.

Adjust size
Customize colors
Download image

Screen Record

Easily record your screen online without plugins. Capture your browser, app window, or full screen and export locally.

Native browser capture
Instant preview
Local export

Range Number Lab

Batch-generate custom random numbers online. Set precise ranges and unique toggles for sampling, testing, or giveaways.

Range and precision
Unique toggle
Multi-line output

UUID Batch Forge

Instantly batch-generate universally unique identifiers (UUID/GUID) online. Perfect for API testing and mock data.

Batch output
Case toggle
Text export

Random Grouping

Easily shuffle names into random groups or pick a single random winner online. Perfect for fair team splitting.

By group count or size
Single pick mode
Flexible separators

Image

Image workflows that stay local in the browser whenever possible.

4

Offline Watermark

Securely add text watermarks to your images online. Runs completely in your browser offline for ultimate privacy.

Opacity and angle
Local rendering
Export result

Image Compress

Compress images directly in your browser without uploading. Reduce file size safely and compare before/after quality.

Quality control
Before/after compare
Download file

QR Content Reader

Safely scan and decode QR codes from local images online. Extract text, links, or Wi-Fi payloads without uploading.

Offline decode
Image preview
Copy result

Barcode Canvas

Create high-quality barcodes online. Supports multiple encoding standards and instant SVG vector artwork downloads.

Switch standards
Color and size
SVG download

Encrypt

Hashing, encoding, and common symmetric encryption helpers.

11

Text MD5

Instantly calculate 32-character MD5 hashes from text online. View both upper and lowercase variants for easy copying.

32-char output
Upper/lower case
Copy quickly

File MD5

Calculate MD5 checksums for large files directly in your browser. Fast, secure chunked hashing with no file uploads.

Local files
Chunked hashing
Large-file friendly

HMAC Hash

Compute secure HMAC hashes online using custom keys. Supports MD5 and SHA variants with standard hex output.

Multiple algorithms
Keyed hash
Hex output

SHA Hash

Generate SHA cryptographic hashes online. Instantly compute SHA-1, SHA-256, and SHA-512 values with fast hex outputs.

SHA variants
Fast hashing
Hex output

AES Cipher

Encrypt and decrypt text securely using AES online. Supports ECB/CBC modes, custom padding, IVs, and Hex/Base64 output.

ECB/CBC
Hex or Base64
Custom IV

Rabbit Cipher

Encrypt and decrypt sensitive text online with the lightweight Rabbit stream cipher. Runs entirely in your browser.

Lightweight
Browser-side
Copy result

DES / 3DES

Handle legacy DES and Triple DES (3DES) symmetric encryption and decryption online with instant Base64 outputs.

DES and 3DES
Text encryption
Base64 output

RC4 Cipher

Quickly encrypt or decrypt text using the classic RC4 stream cipher algorithm. Completely localized for your privacy.

Classic cipher
Fast actions
Local only

Base64

Fast online Base64 encoder and decoder. Convert plain text to Base64 and back with full Unicode support.

Unicode-safe
Encode/decode
Copy result

Unicode Convert

Convert regular text into Unicode escape sequences or decode them back to readable characters instantly online.

Escape output
Restore readable text
Local processing

URL Encode

Safely encode or decode URL parameters and web links online to ensure proper HTTP request formatting and data transport.

Safe for params
Encode/decode
Instant result

Time

Timestamp conversion, date arithmetic, and world time tools.

5

Timestamp

Live Unix epoch timestamp converter. Instantly translate between human-readable date strings and raw seconds/ms values.

Seconds/ms
Live clock
Bidirectional conversion

Date Calculation

Easily calculate date intervals or add/subtract days, months, and years from a target date for accurate project planning.

Add days/months/years
Day interval
Clear forms

World Time

Compare current times across major world cities instantly. Simplify your international meeting and travel planning.

Multiple cities
Side-by-side table
Choose base zone

Business Day Offset

Calculate future delivery dates by adding or subtracting business days. Skips weekends and supports custom holiday lists.

Skip weekends
Custom holiday list
Range counting

Multi-Line Time Converter

Batch convert multi-line Unix timestamps or dates from server logs into standardized, readable time formats instantly.

Auto direction
Seconds and ms
Batch export

Convert

Local conversion tools for common units, temperature, data sizes, and durations.

1

Unit Switchboard

Fast, all-in-one unit converter. Easily switch between engineering and daily units like length, weight, area, and storage.

Grouped switching
Direct target unit
Whole-group table

Finance

Practical helpers for amount wording, list totals, and loan estimates.

3

English Amount Draft

Translate numeric currency values into standard uppercase English amount wording for professional invoices and contracts.

Sentence case
Uppercase style
Invoice ready

Number Sheet Summary

Quickly extract and calculate the sum, average, minimum, and maximum values from loose, unformatted number lists.

Mixed separators
Average and extremes
Invalid token hints

Loan Payment Planner

Estimate loan monthly payments easily. Calculate total interest costs and view a detailed first-year payment schedule.

Monthly estimate
Total interest
First 12 months

Text

A practical text workbench for editing, converting, and validation.

12

RMB Uppercase

Instantly convert Arabic numerals into standardized uppercase Chinese RMB format (元角分) for official financial use.

Financial wording
Integers and decimals
Instant result

List Cleanup

Clean up lists quickly by removing duplicate entries, empty lines, and noisy spacing. Create tidy, unique text data arrays.

Line, comma, or space
Ignore case
Summary kept

Emoji Cleaner

Easily strip emojis and pictographic symbols from social media copy to generate clean, professional plain-text output.

Plain text output
Removed count
Form-friendly

CN ID Check

Securely validate 18-digit Mainland China ID numbers. Extract age, gender, and region details locally in your browser.

18-digit validation
Birthday and age
Region prefix

Chinese Script Switch

Quickly translate text between Simplified and Traditional Chinese using a fast offline dictionary for regional localization.

Two-way switch
Offline dictionary
Long-text friendly

Pinyin Transcriber

Transcribe Chinese text into Pinyin with tone marks. Extract initials for indexing and search optimization locally.

Marked, plain, or numeric
Initials output
Local-only

Pluralize

Instantly switch English nouns between singular and plural forms. Perfect for grammar checks and code variable naming.

Singular/plural
Common word forms
Simple input

English Case

Format text capitalization effortlessly. Convert paragraphs to uppercase, lowercase, Title Case, or Sentence case instantly.

Several case styles
Clean copy
Copy quickly

CN/EN Spacing

Automatically optimize typography by inserting correct spacing between Chinese characters, English words, and numbers.

Better mixed spacing
Improved readability
One-click fix

Trim Text

Remove leading, trailing, and unnecessary whitespace from text. Supports full document trimming or line-by-line cleanup.

Full trim
Line trim
Batch-friendly

Regex Test

Test and validate Regular Expression (Regex) patterns online. Highlight matches and capture groups in real-time.

Flags supported
Quick validation
Template examples

Markdown to HTML

Write Markdown and instantly render it into clean HTML. Features a dual-pane live preview and easy code exportation.

Two-pane flow
HTML output
Live preview

Dev

Formatting, conversion, and debugging helpers for developers.

13

JSON Format

Format, beautify, minify, and validate JSON data structures online. Catch syntax errors with accurate line highlighting.

Pretty print
Minify
Validation

JSON Type Sketch

Instantly generate nested TypeScript interfaces and type definitions from JSON API response data to speed up development.

Rename root type
Keeps nesting
Monaco dual pane

CSS Format

Beautify and format messy CSS stylesheets using Prettier, or safely minify them to reduce file size and improve loading.

Prettier format
Minified output
Code editor

JavaScript Format

Format and organize messy JavaScript source code to standard conventions, or compress it to optimize frontend workflows.

Prettier format
Minify output
Copy result

HTML Format

Clean up nested HTML tag structures for better readability, or compress DOM snippets safely to remove excess whitespace.

Cleaner structure
Minified output
Snippet friendly

SQL Format

Format complex SQL queries into readable, well-aligned structures. Uppercase keywords or compress to a single line.

Uppercase keywords
Compress spaces
Query friendly

Cron Schedule

Validate Linux Crontab syntax online. Accurately calculate and preview the next 10 execution times for scheduled jobs.

Next 10 runs
Expression validation
Time list

Naming Gearbox

Convert phrases or variables into camelCase, snake_case, PascalCase, and other popular programming naming conventions.

Auto word split
6 naming styles
Instant output

Color Format Bridge

Accurately convert UI color codes between HEX, RGB, and HSL formats online. Features a live visual color picker swatch.

Three formats
Color picker
Live preview

WebSocket Test

Connect to and debug WS/WSS WebSocket endpoints from your browser. Send custom payloads and view real-time message logs.

Connect/close
Message log
Heartbeat settings

Go Struct / JSON

Instantly generate strongly-typed Golang Struct code definitions from JSON API payloads to eliminate manual typing.

Two-way conversion
Keeps nesting
Developer utility

Less to CSS

Quickly compile Less preprocessor variables and nested code into standard flat CSS stylesheets right in your browser.

In-browser compile
Two columns
Copy output

Base Conversion

Easily cross-convert numbers across binary, octal, decimal, hexadecimal, and up to base-36 formats in a unified table.

2/8/10/16/32/36 bases
Instant table
Useful in development