ToolPocket

Fast offline tools

Tools

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Parse .env KEY=VALUE lines into a JSON object.

Add Line Numbers

Prefix lines with 1-based line numbers.

ASCIIfy (Strip Non-ASCII)

Strip non-ASCII characters (optionally keep newlines).

Base converter (bin/dec/hex)

Convert between binary, decimal, and hexadecimal.

Base32 Encode/Decode

Encode text to Base32 or decode Base32 back to text.

Base58 Encode/Decode

Encode text to Base58 (Bitcoin alphabet) or decode Base58 back to text.

Base64 encode/decode

Encode text to base64 or decode base64 back to text.

Base64URL Encode/Decode

Encode text to Base64URL or decode Base64URL back to text.

Basic Auth Header

Generate an HTTP Authorization: Basic … header.

Convert text to snake_case, camelCase, PascalCase, kebab-case.

Split text into fixed-size chunks (characters).

Color Contrast Checker

Check contrast ratio between two colors (WCAG).

Color converter (HEX/RGB/HSL)

Convert common color formats offline.

Cron explainer (next runs)

Explain a cron expression and show the next run times.

CSV → SQL INSERT

Convert CSV (with headers) into SQL INSERT statements.

Convert CSV ↔ JSON with delimiter auto-detect, header toggle, and worker parsing.

dataformatpower

CSV Cell Escape

Escape a value so it can be pasted into a CSV cell safely.

Convert a curl command into an Axios request snippet (best-effort, offline).

curl → C# HttpClient

Convert a curl command into a C# HttpClient request (best-effort, offline).

curl → C++ libcurl

Convert a curl command into a C++ libcurl snippet (best-effort, offline).

curl → Clojure (clj-http)

Convert a curl command into a Clojure clj-http request snippet (best-effort, offline).

curl → Deno fetch

Convert a curl command into a Deno fetch snippet (best-effort, offline).

curl → Elixir (Req)

Convert a curl command into an Elixir Req request snippet (best-effort, offline).

Convert a curl command into a JavaScript fetch() request (best-effort, offline).

curl → Go (resty)

Convert a curl command into a Go request using resty (best-effort, offline).

curl → Go net/http

Convert a curl command into a Go net/http request snippet (best-effort, offline).

curl → HTTPie

Convert a curl command into an HTTPie command (best-effort, offline).

curl → Java (Unirest)

Convert a curl command into a Java request using Unirest (best-effort, offline).

curl → Java HttpURLConnection

Convert a curl command into a Java HttpURLConnection snippet (best-effort, offline).

curl → Java OkHttp

Convert a curl command into a Java OkHttp request snippet (best-effort, offline).

curl → JavaScript XHR

Convert a curl command into a JavaScript XMLHttpRequest snippet (best-effort, offline).

curl → jQuery $.ajax

Convert a curl command into a jQuery $.ajax snippet (best-effort, offline).

curl → Kotlin Ktor

Convert a curl command into a Kotlin Ktor client request snippet (best-effort, offline).

curl → Node.js http(s)

Convert a curl command into a Node.js http/https request snippet (best-effort, offline).

curl → Perl LWP

Convert a curl command into a Perl LWP::UserAgent snippet (best-effort, offline).

curl → PHP (Symfony HttpClient)

Convert a curl command into PHP code using Symfony HttpClient (best-effort, offline).

curl → PHP cURL

Convert a curl command into a PHP cURL snippet (best-effort, offline).

curl → PHP Guzzle

Convert a curl command into a PHP Guzzle request snippet (best-effort, offline).

curl → Postman collection

Convert a curl command into a Postman Collection v2.1 JSON (single request). Offline.

curl → PowerShell

Convert a curl command into PowerShell Invoke-RestMethod/Invoke-WebRequest (best-effort, offline).

curl → Python aiohttp

Convert a curl command into a Python aiohttp snippet (best-effort, offline).

curl → Python http.client

Convert a curl command into a Python http.client snippet (best-effort, offline).

curl → Python httpx

Convert a curl command into a Python httpx request snippet (best-effort, offline).

curl → Python requests

Convert a curl command into a Python requests snippet (best-effort, offline).

curl → Python urllib.request

Convert a curl command into a Python urllib.request snippet (best-effort, offline).

curl → R httr

Convert a curl command into an R httr::VERB(...) snippet (best-effort, offline).

curl → Ruby Faraday

Convert a curl command into a Ruby Faraday snippet (best-effort, offline).

curl → Ruby HTTParty

Convert a curl command into a Ruby HTTParty request snippet (best-effort, offline).

curl → Ruby Net::HTTP

Convert a curl command into a Ruby Net::HTTP snippet (best-effort, offline).

curl → Rust reqwest

Convert a curl command into a Rust reqwest Client request (best-effort, offline).

curl → Rust ureq

Convert a curl command into a Rust ureq request snippet (best-effort, offline).

curl → Scala (sttp)

Convert a curl command into a Scala sttp client3 request snippet (best-effort, offline).

curl → Swift URLSession

Convert a curl command into a Swift URLSession request snippet (best-effort, offline).

Convert a curl command into a wget command (best-effort, offline).

Decode URI Component

Decode each line with decodeURIComponent.

Remove common leading indentation from multi-line text.

Unified diff view for two texts (worker on large inputs).

Email/domain extractor

Extract unique emails and domains from text.

Encode URI Component

Encode each line with encodeURIComponent.

Epoch ↔ ISO time

Convert unix epoch seconds/ms to ISO and back.

File size converter

Convert bytes to KB/MB/GB (base-10 and base-2).

Keep only lines that match a substring (optionally case-insensitive).

Simple find/replace with optional case-insensitive matching.

Hex Encode/Decode

Encode text to hex bytes or decode hex back to text.

Compute an HMAC using SHA-256 (offline, WebCrypto).

HTML → text (strip tags)

Extract visible text from HTML (best-effort).

HTML entities encode/decode

Convert &, <, >, quotes to entities and back.

HTML Escape/Unescape

Escape or unescape HTML special characters.

HTML formatter (best-effort)

Pretty-print HTML locally (no network).

HTTP Headers Formatter

Parse and normalize raw HTTP headers.

HTTP status code lookup

Look up what an HTTP status code means (offline).

Add a fixed number of spaces to the start of each line.

IP Extractor (IPv4)

Extract IPv4 addresses from text.

IPv4 subnet calculator

Compute network/broadcast/first/last/hosts from CIDR.

Join lines into a single line with a separator.

Convert a flat JSON object into KEY=VALUE .env lines.

JSON → Bash exports

Convert a JSON object into Bash export lines (best-effort, offline).

JSON → C# classes

Convert JSON into simple C# POCO classes (best-effort, offline).

Convert JSON into CSV (best-effort, offline).

JSON → Dart classes

Generate Dart model classes with fromJson/toJson from sample JSON (best-effort, offline).

JSON → Go struct

Generate a Go struct from sample JSON (best-effort, offline).

JSON → GraphQL types

Infer GraphQL type definitions from sample JSON (best-effort, offline).

JSON → HCL (Terraform)

Convert JSON into Terraform-style HCL (objects, lists, primitives). Offline.

JSON → HTML table

Convert a JSON array of objects into an HTML <table>. Offline.

Convert a JSON object into an INI file (best-effort, offline).

JSON → Java .properties

Convert JSON into Java .properties key=value lines (flattened, offline).

JSON → Java classes

Generate Java (Jackson-friendly) classes from sample JSON (best-effort, offline).

JSON → JSON Schema

Generate a JSON Schema (draft 2020-12) from sample JSON (best-effort, offline).

JSON → Kotlin data classes

Generate Kotlin data classes (Gson-friendly) from sample JSON (best-effort, offline).

JSON → Lua table

Convert JSON into a Lua table literal (nil/true/false, arrays as tables). Offline.

JSON → Markdown list

Convert JSON into a nested Markdown bullet list (best-effort). Offline.

JSON → Markdown table

Convert a JSON array of objects into a Markdown table. Offline.

JSON → PHP array

Convert JSON into PHP array syntax (best-effort, offline).

JSON → Protobuf (proto3)

Infer a proto3 schema from sample JSON (best-effort, offline).

JSON → Python Pydantic

Generate Pydantic BaseModel classes from sample JSON (best-effort, offline).

JSON → Python TypedDict

Generate a Python TypedDict from sample JSON (best-effort, offline).

JSON → Query string

Convert JSON into a URL query string (supports nested objects + arrays). Offline.

JSON → R list()

Convert JSON into an R list() expression (named lists, nested structures). Offline.

JSON → Ruby hash

Convert JSON into a Ruby hash/array literal (offline).

JSON → Rust struct

Generate Rust structs (serde) from sample JSON (best-effort, offline).

JSON → SQL INSERT

Convert a JSON array of objects into SQL INSERT statements (best-effort, offline).

JSON → Swift Codable

Generate Swift structs (Codable) from sample JSON (best-effort, offline).

Convert JSON into TOML (best-effort, offline).

JSON → TypeScript

Generate a TypeScript type from sample JSON (best-effort, offline).

Convert JSON into XML (best-effort, offline).

Convert JSON into YAML (best-effort, offline).

JSON → Zod schema

Generate a Zod schema from sample JSON (best-effort, offline).

JSON Extract (Best-effort)

Extract the first JSON object found in text and pretty-print it.

Flatten JSON into dot-path key/value pairs.

Prettify and validate JSON/JSONC (comments + trailing commas supported).

JSON Keys / Paths

List keys (or dot-paths) found in a JSON document.

Merge two JSON objects (shallow or deep).

Validate JSON and output a single-line minified string.

JSON path finder (basic)

Get a value from JSON using a simple dot/bracket path.

Extract a value from JSON using RFC 6901 JSON Pointer.

Sort JSON object keys (recursively).

JSON String Escape

Escape text so it can be safely pasted as a JSON string.

JSON Trim Strings

Trim whitespace from all string values in JSON.

Turn dot-path key/value pairs back into nested JSON.

JSONL ↔ JSON Array

Convert JSON Lines (JSONL) to a JSON array and back.

Decode a JWT header/payload (no verification).

JWT Expiry Checker

Decode a JWT and show exp/iat/nbf as readable times.

JWT HS256 signer

Create an HS256-signed JWT from header/payload + secret (offline).

JWT HS256 verifier

Verify an HS256 JWT signature with a shared secret (offline).

JWT HS512 signer

Create an HS512-signed JWT from header/payload + secret (offline).

JWT HS512 verifier

Verify an HS512 JWT signature with a shared secret (offline).

Show character length for each line.

Line Prefix/Suffix

Add a prefix and/or suffix to each non-empty line.

Line tools (sort/unique/trim)

Sort lines, remove duplicates, trim whitespace.

List Diff (A − B)

Find items in list A that are not in list B.

Lorem ipsum generator

Generate placeholder paragraphs offline.

Markdown Escape

Escape Markdown special characters in text.

Markdown table formatter

Align markdown table columns for clean copy/paste.

MIME type lookup

Convert file extensions ↔ MIME types (offline).

NanoID Generator

Generate URL-safe NanoIDs locally.

Normalize Newlines

Convert line endings between LF and CRLF.

Now (Timestamps)

Get the current time in common timestamp formats.

Number Extractor

Extract numbers from text (integers and decimals).

Password generator

Generate random passwords locally (no storage).

Percent calculator

Compute A as % of B, and percentage change from A→B.

Port number lookup

Look up common TCP/UDP port numbers (offline).

Query string ↔ JSON

Convert URL query strings to JSON and back (offline).

Pick one (or N) random items from a list.

Raw HTTP → curl

Convert a raw HTTP request (request line + headers + body) into a curl command (offline).

Escape text so it can be used literally inside a regular expression.

Regex tester with match table + replace preview (runs in a worker).

Remove Diacritics

Convert accented characters to their base forms (best-effort).

Reverse characters or reverse line order.

Apply ROT13 substitution cipher (A↔N).

Sample Random Lines

Pick N random lines from a list.

Bump a semantic version (major/minor/patch) and optionally set pre-release/build metadata (offline).

Compare two semantic versions (SemVer) and report which one is newer (offline).

SemVer validator

Validate a semantic version string and show its parsed components (offline).

Compute SHA-1 hash locally (for legacy checksums).

Hash text using WebCrypto (SHA-256).

Compute SHA-512 hash locally.

Randomly shuffle the order of lines.

Convert text to a URL-safe slug.

Sort lines and remove duplicates.

Spaces → Tabs

Convert leading indentation spaces into tabs (best-effort).

Split text by a delimiter into one item per line.

SQL IN Clause Builder

Turn lines into a quoted SQL IN (…) list.

SQL string escape

Escape/unescape single quotes for SQL string literals (best-effort, offline).

Strip ANSI Escape Codes

Remove ANSI color/control codes from text.

Strip Non‑Printable

Remove non-printable characters from text (keep tabs/newlines optionally).

Remove surrounding single/double quotes from each line.

Strip UTF-8 BOM

Remove a leading UTF-8 BOM () if present.

Tabs → Spaces

Replace tab characters with spaces.

Text stats (word/char counter)

Count words, characters, lines, and basic stats.

Wrap text to a fixed column width.

Timestamp extractor

Extract ISO-ish dates and epoch values from text and normalize.

Timezone converter

Convert an ISO date/time between time zones (no network).

Convert text to Title Case.

Truncate text to a maximum length (characters).

Decode ULID timestamp (milliseconds) and show ISO time.

Generate ULIDs locally (sortable unique IDs).

Unicode escape/unescape

Escape non-ASCII to \uXXXX / \u{...} and unescape back.

Count unique lines (optionally case-insensitive).

Unit converter (essentials)

Temperature, distance, and time conversions.

Unix Permissions

Convert octal file modes (e.g. 755) to rwx string.

URL Domain Extractor

Extract hostnames/domains from URLs.

URL encode/decode

Encode/decode URL components safely.

Extract http/https URLs from text.

Join a base URL and path safely.

Break a URL into components (protocol/host/path/query/hash).

URL Sort Query Params

Sort URL query parameters alphabetically.

URL Strip Tracking Params

Remove common tracking query params (UTM, gclid, fbclid, etc.).

Build URLs with UTM parameters.

UUID Bulk Generator

Generate many UUIDv4 values at once.

UUID Case Converter

Convert UUIDs to lower-case or upper-case.

Extract UUIDs from text.

Generate v4 UUIDs in bulk.

Validate UUID and detect version + variant.

UUID v5 Generator

Generate name-based UUIDv5 (SHA-1) from namespace + name.

UUID v7 Generator

Generate time-ordered UUIDv7 locally.

Validate UUIDs (one per line) and report invalid entries.

Whitespace Cleaner

Trim lines, collapse spaces, and remove extra blank lines.

Count word frequencies in text.

Validate well-formed XML and pretty print.

Convert YAML to JSON, or JSON to YAML.