Too Much Tools

Format, minify, sort and validate JSON locally, with precise error locations.

Structurally compare two JSON documents and see added, removed and changed values, locally.

Convert JSON to YAML and YAML back to JSON, locally, both ways.

Convert JSON to XML and XML back to JSON, locally, both ways.

Convert an array of JSON objects to CSV and parse CSV back to JSON, locally.

Generate a JSON Schema from sample JSON, or validate JSON against a schema, locally.

Run JSONPath queries against a JSON document and inspect the matches, locally.

Stringify JSON into an escaped string literal for code, or parse a string back to JSON, locally.

Convert .NET appsettings.json to environment variables (and back) for Docker, Kubernetes and CI.

Generate sample JSON from C# classes (loose mode) or generate C# DTOs from JSON.

Generate TypeScript interfaces from C# models and C# classes from TypeScript, locally.

Escape or unescape text for C# strings, JSON, regex, URLs and HTML, locally.

Parse an ADO.NET/database connection string into key-values (and back), locally.

Encode text to Base64 or decode Base64 back to text, with URL-safe support, all local.

Convert text to 8-bit binary and back, UTF-8 aware, entirely local.

Generate GUIDs, UUID v4, time-sortable UUID v7 and ULIDs locally, in bulk.

Decode a JSON Web Token's header and payload and inspect its claims, locally.

Compute SHA-1/256/384/512 digests and HMACs in your browser via Web Crypto.

Generate strong random passwords and encryption keys (hex/base64) in your browser.

Encrypt or decrypt text with AES-256-GCM and a passphrase (PBKDF2), all local.

Generate an RSA public/private key pair in PEM format, in your browser via Web Crypto.

Hash a password with bcrypt at a chosen cost, or verify one against a hash, locally.

Generate time-based one-time codes (RFC 6238) from a secret, with a QR code and validator, locally.

Estimate a password's entropy and crack time from its character sets, locally.

Turn a username and password into an HTTP Basic Authorization header, locally.

Generate and validate BIP39 recovery mnemonics with entropy and seed, locally.

Count characters, words, lines and UTF-8 bytes in text, computed locally.

Diff two blocks of text side by side, locally, with whitespace and case options.

Write Markdown and preview sanitized HTML side by side, rendered locally and safely.

Convert text between camelCase, snake_case, kebab-case, PascalCase and more, locally.

Generate placeholder text, words, sentences or paragraphs, locally.

Convert HTML into clean Markdown, locally in your browser.

Spell text using the NATO phonetic alphabet (Alfa, Bravo, Charlie…), locally.

Sort, dedupe, trim, re-case and wrap a list of lines, then join them, locally.

Mask the middle of a string (secrets, emails, tokens) keeping a few visible chars, locally.

Shorten words like "internationalization" to numeronyms like "i18n", locally.

Convert text to Unicode escapes (\uXXXX, U+, HTML entities) and back, locally.

Turn text into ASCII-art banners with a choice of figlet fonts, locally.

Search emojis by name and copy the character, or its code points, locally.

Test JavaScript regular expressions against sample text with live matches, groups and replace.

Inspect each character: code point, UTF-8/UTF-16 bytes and HTML entity, locally.

Paste anything, it detects the format (JWT, JSON, SQL, XML…) and sends it to the right tool.

Convert between bytes, KB/MB/GB/TB, binary KiB/MiB/GiB and bits, locally.

Convert integers between hex, decimal, binary, octal and any base (2–36), locally.

Browse the full ASCII table with decimal, hex, octal and binary codes, locally.

Convert between integers (1–3999) and Roman numerals, locally.

Convert temperatures between Celsius, Fahrenheit, Kelvin and Rankine, locally.

Toggle Unix read/write/execute bits and get the octal and symbolic chmod, locally.

Convert a `docker run` command into a docker-compose service definition, locally.

Evaluate math expressions with functions and constants, locally (no eval).

Percent of a value, what-percent-of, and percentage change — all in one, locally.

Estimate how long a task takes and when it finishes from a measured rate, locally.

Compare timing samples across suites by mean and variance, then export the results, locally.

A simple stopwatch with laps, running locally in your browser.

A searchable memo of the git commands you keep forgetting, locally.

Format and beautify SQL for many dialects, with keyword casing, all local.

Turn SQL INSERT statements into JSON rows, parsed locally in your browser.

Replace inline literals in a SQL query with parameters and extract their values, locally.

Explain cron expressions in plain English and preview upcoming run times locally.

Convert Unix timestamps and dates across UTC, local and world time zones, locally.

Explore dates: add/subtract, ISO week, day-of-year, leap year and diffs, locally.

Turn a JSON array of objects into an Excel (.xlsx) file, or read a spreadsheet back to JSON, locally.

Generate realistic fake data from a field schema and export as JSON, CSV or SQL, locally.

View and sort CSV data as a table, parsed locally in your browser.

Pretty-print or minify XML, with validation, all local.

Convert JSON to TOML and TOML back to JSON, locally.

Convert YAML to TOML and TOML back to YAML, locally.

Validate and pretty-print YAML, optionally sort keys, or view it as JSON, locally.

Validate an IBAN's checksum and break it into country, check digits and BBAN, locally.

Parse a phone number into country, type and E.164, and format it, locally.

Resize and compress images to JPEG/WebP/PNG in your browser, nothing is uploaded.

Preview a Base64/data-URI image, or turn an image into a Base64 data URI, locally.

Generate a QR code from text or a URL, with color and error-correction options, locally.

Generate barcodes (Code128, EAN, UPC, Code39 and more) from text, locally.

Make a solid/near-solid background transparent by color, with tolerance and soft edges, locally.

Generate lightweight placeholder images as inline SVG or a data URI, locally.

Create a QR code that connects devices to a Wi-Fi network, locally.

Compute network, broadcast, netmask, host range and host count from a CIDR, locally.

Convert an IPv4 address between dotted-decimal, integer, hex, octal, binary and IPv6-mapped, locally.

Find the smallest CIDR block that fully contains a start and end IPv4 address, locally.

Generate a random RFC 4193 Unique Local Address prefix (fd00::/8) with subnet, locally.

Generate random MAC addresses with a chosen separator, case and optional OUI prefix, locally.

Find the vendor of a MAC address from a bundled set of common OUI prefixes, locally.

Pick random, unused-range TCP/UDP port numbers for local services, locally.

Percent-encode or decode text and URLs, component-wise or whole, all local.

Break a URL into protocol, host, path, query parameters and fragment, locally.

Build a URL query string from JSON parameters and parse one back to JSON, locally.

Look up HTTP status codes and MIME types with quick search, all local reference.

Validate YAML, Docker Compose and Kubernetes manifests for structure and common mistakes, locally.

Explore an OpenAPI/Swagger spec (JSON or YAML) and generate C# models from its schemas, locally.

Format JavaScript, TypeScript, CSS, SCSS, HTML, JSON, YAML and Markdown with Prettier, locally.

Convert colors between hex, rgb(a) and hsl(a), with a live swatch, locally.

Break a User-Agent string into browser, engine, OS and device, locally.

Generate SEO, OpenGraph and Twitter meta tags from a few fields, locally.

Turn text into a clean, URL-safe slug, stripping accents and punctuation, locally.

Reduce emails to a canonical form (Gmail dots and +tags) to spot duplicates, locally.

Unwrap Outlook SafeLinks and similar redirect URLs to reveal the real destination, locally.

Press any key to see its JavaScript event.key, code, keyCode and modifiers, locally.

Write rich text with a toolbar and get clean HTML out, locally.

See what your browser exposes: screen, viewport, platform, languages and more, locally.