String Master

Ultimate string manipulation toolkit — 188+ commands in your right-click menu

Case · Lines · Numbers · Unicode · JSON · XML · Web · SQL · Encrypt · Encode · Convert

Quick Start

Select text in the editor
Right-click → "String Master" submenu, pick a command
Or press Ctrl+Shift+M to open the live preview panel — see results before applying

Features (188+ Commands)

All commands are organized into 15 groups in the right-click context menu.

1. Line Operations (24 commands)

Command	Description
Delete Blank Lines	Remove empty/whitespace-only lines
Delete Duplicate Lines	Deduplicate lines (preserves first occurrence)
Keep Only Duplicate Lines	Remove lines that appear only once
Collapse Consecutive Empty Lines	Merge multiple blank lines into one
Trim Leading and Trailing Whitespace	Remove whitespace from both ends of each line
Trim Leading Whitespace	Remove leading whitespace from each line
Trim Trailing Whitespace	Remove trailing whitespace from each line
Sort Lines Ascending	Lexicographic sort A→Z
Sort Lines Descending	Lexicographic sort Z→A
Sort Lines Randomly	Shuffle line order
Sort Lines Natural (A→Z)	Natural sort ascending (e.g. item2, item10)
Sort Lines Natural (Z→A)	Natural sort descending
Sort by Line Length (Short→Long)	Sort by character count ascending
Sort by Line Length (Long→Short)	Sort by character count descending
Sort Lines Hierarchical	Sort preserving indentation hierarchy
Grep (Keep Matching Lines)	Filter lines matching a regex pattern
Inverted Grep (Remove Matching Lines)	Remove lines matching a regex pattern
Group and Count Lines	Count occurrences of each unique line
Join Lines with Custom Separator	Merge lines with any separator (prompted)
Join Lines with Single Quotes + Commas	`'val1','val2','val3'` — great for SQL IN clauses
Join Lines with Double Quotes + Commas	`"val1","val2","val3"`
Add Same Character at Both Ends	Wrap each line with a custom character
Split by Delimiter	Split each line into multiple lines by a delimiter
Remove Leading Line Numbers	Strip leading numbers from each line

2. Naming & Case (14 commands)

Command	Example Input → Output
Switch Case (Smart Cycle)	Cycle through `camelCase` → `snake_case` → `kebab-case` → `PascalCase`
camelCase	`hello_world` → `helloWorld`
PascalCase	`hello_world` → `HelloWorld`
snake_case	`helloWorld` → `hello_world`
SCREAMING_SNAKE	`helloWorld` → `HELLO_WORLD`
kebab-case	`helloWorld` → `hello-world`
Capitalize First Letter	`hello` → `Hello`
Decapitalize	`Hello` → `hello`
Titleize (Each Word)	`hello world` → `Hello World`
Titleize (AP Style)	Follows AP style guide
Titleize (Chicago Style)	Follows Chicago style guide
Sentence case	`hello world` → `Hello world`
Swap Case	`Hello` → `hELLO`
Random Case	`hello` → `hElLo`

3. Number Operations (4 commands)

Command	Description
Increment All Numbers	All integers +1 (preserves leading zeros)
Decrement All Numbers	All integers -1 (preserves leading zeros)
Duplicate and Increment	Copy selection and increment numbers in the copy
Sequence Numbers from First	Replace numbers with sequential values starting from the first

Example — Increment:

Input:  file_01.txt, file_02.txt, file_03.txt
Output: file_02.txt, file_03.txt, file_04.txt

Example — Duplicate + Increment:

Input:  const item1 = "...";
Output: const item1 = "...";
        const item2 = "...";

4. Escape / Unescape (6 commands)

Command	Description
Escape Java String	`\t` `\n` `\"` `\\` etc.
Unescape Java String	Revert Java escape sequences
Escape JSON String	Escape for JSON strings
Unescape JSON String	Revert JSON escape sequences
String Escape	Generic escape for `\n` `\t` `\"` `\'` `\\`
String Unescape	Generic unescape

5. Encode / Decode (14 commands)

Command	Description
Encode to Base64	Text → Base64
Decode Base64	Base64 → Text
Encode to Hex	Text → Hex bytes
Decode Hex	Hex → Text
URL Encode	Encode special URL characters
URL Decode	Decode URL-encoded text
URL Encode (RFC 3986)	`encodeURIComponent` — spaces as %20
URL Decode (RFC 3986)	`decodeURIComponent`
ISO Timestamp → Epoch Milliseconds	`2024-01-01` → `1704067200000`
Epoch Milliseconds → ISO Timestamp	`1704067200000` → `2024-01-01T00:00:00.000Z`
Date → Unix Timestamp (s)	`2024-01-01` → `1704067200`
Timestamp → Date	Auto-detect seconds/millis → `2024-01-01 08:00:00`
Unix Timestamp (s) → Date	`1704067200` → `2024-01-01 08:00:00`
Millis Timestamp → Date	`1704067200000` → `2024-01-01 08:00:00`

6. Tools (19 commands)

Command	Description
Insert SQL → Markdown Table	Convert `INSERT INTO ... VALUES (...)` to a Markdown table
Calculate Sum of Multiple Lines	Evaluate selected lines as math expressions
Sum All Numbers in Text	Extract and sum all numbers in the text
Convert UTF8 to Char	`中文` → `中文`
Convert Char to UTF8	`中文` → `中文`
Chop (Split into Groups)	Split text into groups of N characters (prompts for N)
Truncate	Trim to N chars (no ellipsis)
Prune	Trim to N chars, append `...`
Repeat	Repeat selection N times
Format JSON (Pretty Print)	Pretty-print JSON with indentation
Minify JSON (Compact)	Compress JSON to single line
Remove All Whitespace	Strip all whitespace characters
Rows to Columns (Transpose)	Convert rows to columns (matrix transpose)
Columns to Rows (Reverse Transpose)	Convert columns back to rows
Swap Quotes	`'hello'` → `"hello"` and vice versa
Clean (Collapse Spaces)	`hello world` → `hello world`
Clean Diacritics	`café` → `cafe`
Reverse	`hello` → `olleh`
Slugify	`Hello World!` → `hello-world`

7. XML Tools (8 commands)

Command	Description
Format XML (Pretty Print)	Pretty-print XML with indentation
Minify XML (Compact)	Compress XML to single line
Sort XML Elements (Ascending)	Sort XML child elements A→Z
Sort XML Elements (Descending)	Sort XML child elements Z→A
Escape XML Entities	`<` `>` `&` `"` `'` → XML entities
Unescape XML Entities	XML entities → characters
XML Validate	Check XML syntax, show errors with line context
XML Tags to Lowercase	Convert all XML tag names to lowercase

8. Base Conversion (18 commands)

Command	Description
Decimal → Binary	`10` → `1010`
Decimal → Octal	`10` → `12`
Decimal → Hex	`255` → `ff`
Binary → Decimal	`1010` → `10`
Octal → Decimal	`12` → `10`
Hex → Decimal	`ff` → `255`
Binary → Octal	`1010` → `12`
Octal → Binary	`12` → `1010`
Binary → Hex	`1111` → `f`
Hex → Binary	`f` → `1111`
Octal → Hex	`17` → `f`
Hex → Octal	`f` → `17`
String → Octal Codes	`ab` → `141 142`
Octal Codes → String	`141 142` → `ab`
String → Decimal Codes	`ab` → `97 98`
Decimal Codes → String	`97 98` → `ab`
String → Hex Codes	`ab` → `61 62`
Hex Codes → String	`61 62` → `ab`

9. Encoding Conversion (22 commands)

Command	Description
encodeURI	`encodeURI()` — preserves `:/?#[]@!$&'()*+,;=`
decodeURI	`decodeURI()`
encodeURIComponent	`encodeURIComponent()` — encodes all special chars
decodeURIComponent	`decodeURIComponent()`
Escape (JS %u)	`escape()` — `hello world` → `hello%20world`
Unescape (JS %u)	`unescape()`
HEX → RGB	`#ff6600` → `rgb(255, 102, 0)`
RGB → HEX	`rgb(255, 102, 0)` → `#ff6600`
Simplified → Traditional Chinese	`中文` → `中文` (Han conversion)
Traditional → Simplified Chinese	`中文` → `中文`
lowercase → UPPERCASE	`hello` → `HELLO`
UPPERCASE → lowercase	`HELLO` → `hello`
Char → ASCII Codes	`ABC` → `65 66 67`
ASCII Codes → Char	`65 66 67` → `ABC`
RMB → Chinese Uppercase	`123.45` → `壹佰贰拾叁元肆角伍分`
Chinese → Pinyin	`中文` → `zhongwen`
Number → Roman Numerals	`42` → `XLII`
Roman Numerals → Number	`XLII` → `42`
Text → Morse Code	`SOS` → `... --- ...`
Morse Code → Text	`... --- ...` → `SOS`
Chinese to Unicode	`中文` → `中文`
Unicode to Chinese	`中文` → `中文`

10. Encrypt / Decrypt (23 commands)

Hash (13 commands):

Command	Description
MD5 (32-bit, Lowercase)	`hello` → `5d41402abc4b2a76b9719d911017c592`
MD5 (32-bit, Uppercase)	`hello` → `5D41402ABC4B2A76B9719D911017C592`
MD5 (16-bit, Lowercase)	`hello` → `bc4b2a76b9719d91`
MD5 (16-bit, Uppercase)	`hello` → `BC4B2A76B9719D91`
SHA1	`hello` → `aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d`
SHA2-256	256-bit SHA-2 hash
SHA2-512	512-bit SHA-2 hash
SHA3-224	224-bit SHA-3 hash
SHA3-256	256-bit SHA-3 hash
SHA3-384	384-bit SHA-3 hash
SHA3-512	512-bit SHA-3 hash
RIPEMD-160	160-bit RIPEMD hash
CRC32	8-character CRC32 checksum

Cipher (10 commands, prompts for password):

Command	Description
AES Encrypt / Decrypt	AES symmetric encryption
DES Encrypt / Decrypt	DES symmetric encryption
3DES Encrypt / Decrypt	Triple DES encryption
Rabbit Encrypt / Decrypt	Rabbit stream cipher
RC4 Encrypt / Decrypt	RC4 stream cipher

11. Web Tools — HTML / JS / CSS (19 commands)

Command	Description
General Code Compress	Remove blank lines and extra whitespace
General Code Beautify	Brace-based indentation for C-style languages
HTML Compress	Remove comments and whitespace between tags
HTML Beautify	Pretty-print HTML with proper indentation
JSMin Compress	Remove comments and whitespace from JavaScript
JS Beautify	Brace-based JavaScript formatting
JS Pack Encrypt	Dean Edwards Packer style obfuscation
JS Eval Decrypt	Unpack Dean Edwards Packer format
CSS Compress	Minify CSS (remove comments, whitespace)
CSS Beautify	Pretty-print CSS with indentation
HTML → JS	Convert HTML to JavaScript string literal
JS → HTML	Convert JavaScript string back to HTML
Unicode HTML Encode	Encode non-ASCII chars as `&#xXXXX;` entities
Extract URL Query Params	Parse URL and extract query parameters
Fetch Remote URL Content	HTTP GET remote URL, output to new editor
Escape JavaScript String	JS string escape sequences
Unescape JavaScript String	Revert JS escape sequences
Escape HTML Entities	`&` `<` `>` `"` `'` → HTML entities
Unescape HTML Entities	HTML entities → characters

12. JSON Tools (9 commands)

Command	Description
JSON to CSV	Convert JSON array of objects to CSV
JSON to YAML	Convert JSON to YAML format
YAML to JSON	Convert YAML to JSON
JSON to Markdown Table	Convert JSON array to Markdown table
JSON Validate	Validate JSON syntax with error location
JSON Swap Quotes	Toggle between single and double quotes
JSON Remove Key Quotes	Strip quotes from JSON keys
Generate Random JSON Sample	Create a random JSON object
JSON Tree View	Open hierarchical JSON tree view

13. Misc Tools (6 commands)

Command	Description
Text to QR Code	Generate QR code from selected text (opens in Webview)
Solar → Lunar Calendar	Convert Gregorian date to Chinese lunar calendar
Lunar → Solar Calendar	Convert Chinese lunar date to Gregorian calendar
Calculate Character Length	Show character count, byte length, word count, etc.
UUID/GUID Generate	Generate a random UUID v4
Properties → YAML	Convert Java `.properties` format to YAML

14. SQL Tools (1 command)

Command	Description
Format SQL	Format SQL with keyword capitalization and indentation

15. Meta

Command	Shortcut	Description
Repeat Last Action	`Ctrl+Shift+R`	Re-run the last command
Show Transformations with Preview	`Ctrl+Shift+M`	Open live preview panel with all commands
String Master...	`Ctrl+'`	Open command search quick pick

How to Use

Select text → right-click → "String Master" submenu with 15 grouped categories:

Line Operations — delete, sort, filter, join, split
Naming & Case — camelCase, snake_case, PascalCase, etc.
Number Operations — increment, decrement, sequence
Escape / Unescape — Java, JSON, generic string
Encode / Decode — Base64, Hex, URL, timestamp
Tools — SQL, calc, UTF8, text tools, JSON format
XML Tools — format, minify, sort, validate
Base Conversion — 2/8/10/16 radix interconversion
Encoding Conversion — URI, color, Chinese, pinyin, Morse, etc.
Encrypt / Decrypt — MD5, SHA, AES, DES, etc.
Web Tools — HTML/JS/CSS compress, beautify, convert
JSON Tools — CSV, YAML, Markdown, validate, sample
Misc Tools — QR code, calendar, UUID, properties
SQL Tools — format SQL
Meta — repeat last action, preview panel

2. Command Palette (`Ctrl+Shift+P`)

Type "String Master" to see all 188+ commands, or type a specific command name (e.g., "camelCase" or "驼峰").

Supports pinyin search: type "shanchu" to match "删除" (Delete) commands.

3. Live Preview Panel (`Ctrl+Shift+M`)

Select text → press Ctrl+Shift+M → see real-time previews for every transformation → pick and apply.

4. Keyboard Shortcuts

Shortcut	Command
`Ctrl+Shift+M`	Show Transformations with Preview
`Ctrl+'`	String Master Command Search
`Ctrl+Shift+R`	Repeat Last Action
`Ctrl+Shift+1`	camelCase
`Ctrl+Shift+2`	snake_case
`Ctrl+Shift+3`	kebab-case
`Ctrl+Shift+4`	PascalCase
`Ctrl+Shift+5`	SCREAMING_SNAKE
`Ctrl+Shift+6`	Smart Case Switch

Configuration

Open VS Code Settings (Ctrl+,) → search "String Master":

Setting	Type	Default	Description
`stringMaster.savedRegexes`	`object[]`	`[]`	Saved regex patterns for one-click grep
`stringMaster.enableSidebar`	`boolean`	`true`	Enable the sidebar panel
`stringMaster.sidebarPreview`	`boolean`	`false`	Show live preview next to each command button in the sidebar
`stringMaster.enableStatusTip`	`boolean`	`true`	Show status bar tips instead of popup notifications
`stringMaster.menuOrder`	`string[]`	`[]`	Custom order of command IDs in menus and sidebar
`stringMaster.hiddenCommands`	`string[]`	`[]`	Command IDs to hide from menus and sidebar

Release Notes

Please check CHANGELOG

License

MIT License. See LICENSE for details.

string-master

tfgzs

String Master

Quick Start

Features (188+ Commands)

1. Line Operations (24 commands)

2. Naming & Case (14 commands)

3. Number Operations (4 commands)

4. Escape / Unescape (6 commands)

5. Encode / Decode (14 commands)

6. Tools (19 commands)

7. XML Tools (8 commands)

8. Base Conversion (18 commands)

9. Encoding Conversion (22 commands)

10. Encrypt / Decrypt (23 commands)

11. Web Tools — HTML / JS / CSS (19 commands)

12. JSON Tools (9 commands)

13. Misc Tools (6 commands)

14. SQL Tools (1 command)

15. Meta

How to Use

1. Right-Click Context Menu

2. Command Palette (`Ctrl+Shift+P`)

3. Live Preview Panel (`Ctrl+Shift+M`)

4. Keyboard Shortcuts

Configuration

Release Notes

License

string-master

tfgzs

String Master

Quick Start

Features (188+ Commands)

1. Line Operations (24 commands)

2. Naming & Case (14 commands)

3. Number Operations (4 commands)

4. Escape / Unescape (6 commands)

5. Encode / Decode (14 commands)

6. Tools (19 commands)

7. XML Tools (8 commands)

8. Base Conversion (18 commands)

9. Encoding Conversion (22 commands)

10. Encrypt / Decrypt (23 commands)

11. Web Tools — HTML / JS / CSS (19 commands)

12. JSON Tools (9 commands)

13. Misc Tools (6 commands)

14. SQL Tools (1 command)

15. Meta

How to Use

1. Right-Click Context Menu

2. Command Palette (Ctrl+Shift+P)

3. Live Preview Panel (Ctrl+Shift+M)

4. Keyboard Shortcuts

Configuration

Release Notes

License

2. Command Palette (`Ctrl+Shift+P`)

3. Live Preview Panel (`Ctrl+Shift+M`)