https://devtools.solutions
No accounts. No backend. Just utility.
Start with a category hub if you know the workflow, then move into a single-purpose tool page. This structure keeps the site easier to crawl and makes each page more useful for the exact task it solves.
19 focused pages. Browse JSON formatters, validators, converters, schema builders, and JSON data transformation tools.
30 focused pages. Browse text cleanup, case conversion, comparison, diff, and plain-text conversion tools.
13 focused pages. Browse Base64, URL, HTML, Unicode, and escaping tools for common encoding workflows.
18 focused pages. Browse hashing, password, token, JWT, UUID, HMAC, and certificate tools.
8 focused pages. Browse regex testing, explanation, generation, replacement, and performance tools.
11 focused pages. Browse URL, query, HTTP, DNS, and subnet tools for common networking tasks.
8 focused pages. Browse timestamp, timezone, cron, date-diff, and ISO date conversion tools.
4 focused pages. Browse file conversion, CSV/table, and Base64 file handling tools.
7 focused pages. Browse color conversion, palette generation, and gradient tools.
6 focused pages. Browse log parsing, beautifying, and stack-trace cleanup tools.
5 focused pages. Browse Markdown, HTML, and markup formatting and conversion tools.
4 focused pages. Browse code formatting, minification, validation, and code conversion tools.
2 focused pages. Browse SQL formatting, minification, and SQL-focused conversion tools.
6 focused pages. Browse XML formatting, validation, conversion, and XML code generation tools.
3 focused pages. Browse YAML validation, conversion, and YAML code generation tools.
8 focused pages. Browse lorem ipsum, fake data, QR code, and random value generators.
Every tool on DevTools.Solutions runs in the browser and focuses on one clear purpose: format, convert, validate, parse, generate, or compare developer data without requiring an account or server-side processing.
Analyze password strength, entropy, and character diversity locally in your browser. No data sent to a server.
Convert decimal ASCII code values back to readable text. Browser-based ASCII to text converter.
Decode a Base64 string back to plain text using your browser's built-in atob() function. No server required.
Encode any text or binary string to Base64 using your browser's built-in btoa() function. No server required.
Convert binary values back to readable text. Browser-based binary to text converter.
Build a cron expression from human-readable schedule settings and preview the next scheduled run times.
Build a URL query string from key-value pairs with proper URL encoding. Browser-based query builder.
Generate HTTP request code in fetch, Python, and cURL from a URL and parameters. Browser-based request builder.
Calculate the exact difference between two dates in days, hours, and seconds. Browser-based date diff calculator.
Calculate human-readable relative time from a date (e.g. '3 days ago', 'in 2 hours').
Calculate password bit entropy and strength score based on character set and length. Browser-based tool.
Calculate network address, broadcast, host range, and mask from CIDR notation. Browser-based CIDR calculator.
Remove noise and vendor frames from a stack trace to focus on your application's code.
Pick a color and instantly convert it to HEX, RGB, and HSL formats in your browser.
Convert cURL commands to JavaScript fetch, Python requests, and C# HttpClient code. Browser-based cURL converter.
Convert dates and times between timezones using the Intl.DateTimeFormat API. Browser-based timezone converter.
Convert any text or identifier to camelCase notation — lowercase first word, capitalised subsequent words.
Convert a date string or Unix timestamp to ISO 8601 format (e.g. 2024-05-20T17:43:42.000Z).
Convert any text or identifier to kebab-case notation — all lowercase words joined with hyphens.
Convert all characters in the input text to lowercase using the locale-aware toLowerCase() method.
Convert any text or identifier to PascalCase notation — all words capitalised with no separator.
Convert any text or identifier to snake_case notation — all lowercase words joined with underscores.
Convert all characters in the input text to uppercase using the locale-aware toUpperCase() method.
Count characters, words, lines, and bytes in any text. Browser-based string counter.
Convert CSV text to a JSON array of objects. Browser-based CSV to JSON converter with no server upload.
Render a CSV file as an HTML table for easy reading. Browser-based CSV to table viewer.
Convert a human-readable date and time to its Unix timestamp (seconds since 1970-01-01T00:00:00Z).
Debug regex patterns by inspecting all match groups and capture positions. Browser-based regex debugger.
Paste a Base64 string or data URL to decode it and download the result as a file. All decoding happens in your browser.
Decode and inspect JWT tokens to view header and payload claims. Browser-based JWT decoder, no data sent to a server.
Decode and inspect PEM-encoded SSL/TLS certificates in your browser. View subject, issuer, and validity dates.
Escape special characters for use in a C# string literal, including quotes, backslashes, and control characters.
Escape the five HTML special characters (&, <, >, ", ') so they can safely appear in HTML source code.
Escape special characters in a JavaScript string literal, including quotes, backslashes, and control characters.
Escape special characters in a Python string literal, including quotes, backslashes, and newlines.
Escape single quotes and other special characters in a SQL string value to prevent SQL injection.
Break down a regular expression and explain each part in plain English. Browser-based regex explainer.
Select any file and convert it to a Base64-encoded string or data URL. Runs in your browser.
Flatten nested JSON objects to single-level dot-notation keys. Browser-based JSON flatten tool.
Format and pretty-print code in JSON, JavaScript, CSS, HTML, and SQL. Browser-based code formatter.
Parse and reformat Kubernetes pod log output. Browser-based Kubernetes log formatter.
Align and format Markdown table columns. Browser-based Markdown table formatter.
Format and indent SQL queries for readability. Supports SELECT, INSERT, UPDATE, DELETE, and more.
Pretty-print and indent XML with configurable spacing. Validates structure and highlights parse errors.
Generate cryptographically random API keys of any length using the Web Crypto API. Keys are generated locally in your browser.
Hash a password using bcrypt with configurable cost factor. Uses bcryptjs running entirely in your browser.
Generate C# classes or other typed data models from an XML sample. Code generation runs in your browser.
Generate TypeScript interfaces or C# classes from a YAML sample. Runs in your browser using js-yaml.
Generate color palettes from a base color using complementary, analogous, and triadic schemes. Browser-based tool.
Generate CSS linear and radial gradients with custom colors and angles. Browser-based gradient generator.
Generate fake postal addresses for testing and development. Browser-based fake address generator.
Generate fake email addresses for testing and development. Browser-based fake email generator.
Generate an HMAC signature using SHA-256, SHA-384, or SHA-512 with a secret key. All crypto runs in your browser.
Infer a JSON Schema from a sample JSON value, including types, required fields, and array item schemas.
Build and sign a JSON Web Token with a custom header, payload, and secret using HMAC-SHA256. Runs in your browser.
Generate Lorem Ipsum placeholder text by words, sentences, or paragraphs. Browser-based generator.
Generate Markdown tables from column headers and row data. Browser-based Markdown table generator.
Generate an MD5 hash from any input string. Uses the CryptoJS library running entirely in your browser.
Generate strong, cryptographically random passwords with configurable length and character sets. Runs in your browser.
Generate a QR code image for any URL or text. The image is generated by the qrserver.com API.
Generate a list of cryptographically random GUIDs (UUID v4) in bulk. All generation happens in your browser.
Generate random first names, last names, and full names. Browser-based name generator.
Generate random integers within a configurable range. Browser-based random number generator.
Generate a regex syntax cheat sheet with anchors, quantifiers, character classes, and groups.
Provide example strings that should match and strings that should not match, and get a generated regex pattern.
Describe what you want to match and generate a regular expression pattern. Browser-based regex generator.
Generate random test data sets with configurable fields in JSON or CSV. Browser-based test data generator.
Generate cryptographically random tokens of any length. Browser-based token generator using the Web Crypto API.
Generate a list of cryptographically random UUID v4 values in bulk. All generation happens in your browser.
Generate one or more cryptographically random UUID v4 values using the Web Crypto API. Runs in your browser.
Generate a random word list from a seed text. Browser-based word list generator.
Compare two hash strings for equality, with constant-time comparison to prevent timing side-channels.
Generate SHA-1, SHA-256, SHA-384, SHA-512, and MD5 hashes for any input string using the Web Crypto API. All hashing runs locally in your browser.
Convert HEX color codes to HSL values. Browser-based HEX to HSL converter.
Convert HEX color codes to RGB values. Browser-based HEX to RGB converter.
Convert hexadecimal values back to readable text. Browser-based hex to text converter.
Convert HSL color values to a HEX color code. Browser-based HSL to HEX converter.
Convert HTML entity references like &, <, and > back to their original characters. Runs in your browser.
Escape HTML special characters (&, <, >, ", ') to their HTML entity equivalents. Runs in your browser.
Convert HTML source to equivalent Markdown syntax. Supports headings, bold, italic, links, and lists.
Calculate subnet information from an IP address and subnet mask, including network class, host count, and usable range.
Format and pretty-print JSON with configurable indentation. Validates syntax and reports parse errors.
Generate TypeScript interfaces, C# classes, and Go structs from a JSON sample. All code generation runs in your browser.
Convert a JSON array of objects to CSV format, using the object keys as column headers.
Convert a JSON array to JSONL (newline-delimited JSON) format. Browser-based converter.
Convert JSON objects to Python @dataclass definitions with type annotations. Browser-based code generator.
Convert a JSON array to SQL INSERT statements with a custom table name. Browser-based JSON to SQL tool.
Render a JSON array as an HTML table for easy reading. Browser-based JSON to table viewer.
Convert a JSON array to TSV (tab-separated values) format. Browser-based JSON to TSV converter.
Convert a JSON object or array to well-formed XML. Runs entirely in your browser.
Convert a JSON object or array to YAML format. Runs entirely in your browser.
Convert JSONL (newline-delimited JSON) to a standard JSON array. Browser-based JSONL to JSON converter.
Calculate the edit distance between two strings — the minimum number of single-character insertions, deletions, or substitutions required to transform one into the other.
Reformat and colour-code log output for easier reading. Browser-based log beautifier.
Render and preview Markdown as formatted HTML in real time. Browser-based Markdown preview.
Convert Markdown source to raw HTML. Outputs the HTML source code ready to embed.
Remove whitespace from JSON, JavaScript, CSS, and HTML code to produce a compact single-line output. Runs in your browser.
Remove whitespace from JSON to produce a compact minified string. Browser-based JSON minifier.
Remove all unnecessary whitespace and comments from SQL to produce a compact single-line query.
Remove all whitespace and newlines from XML to produce a compact single-line string.
Collapse multiple consecutive whitespace characters into a single space and trim leading/trailing whitespace.
Minify JSON and measure compression savings. Browser-based JSON optimize and compress tool.
Parse Apache Combined Log Format entries into structured fields. Browser-based Apache log parser.
Parse AWS CloudWatch and ALB log entries into structured fields. Browser-based AWS log parser.
Parse a Cookie header string into individual cookie name-value pairs. Browser-based cookie parser.
Parse HTTP request or response headers into name-value pairs. Browser-based headers parser.
Parse Nginx access log entries in the default combined log format and display each field.
Parse PEM-encoded certificates, keys, and CSRs to inspect their structure. Browser-based PEM parser.
Parse a URL query string into key-value pairs with URL decoding. Browser-based query string parser.
Parse a URL into protocol, host, path, query parameters, and fragment. Browser-based URL parser.
Parse a User-Agent string to identify browser, OS, and device type. Browser-based UA parser.
Paste any data format and automatically convert it to typed code models. Browser-based format-to-code converter.
Preview a regex find-and-replace operation on your text before applying it. Browser-based regex replace tool.
Test regular expressions against any text and see matches highlighted in real time. Browser-based regex tester.
Strip accent marks and diacritical characters from text, converting letters like é, ü, ñ to their plain ASCII equivalents.
Remove all duplicate lines from multi-line text, keeping only the first occurrence of each line. Comparison is case-sensitive and runs in your browser.
Remove duplicate words from text, keeping only the first occurrence. Browser-based word deduplicator.
Delete all blank lines from multi-line text, keeping only lines that contain at least one character.
Strip all punctuation marks from text, leaving only letters, numbers, and spaces.
Reverse the characters in any input string. Runs instantly in your browser.
Convert RGB color values to a HEX color code. Browser-based RGB to HEX converter.
Apply the ROT13 Caesar cipher substitution to text. ROT13 is its own inverse — apply it twice to decode.
Benchmark a regular expression by running it against a large input string and measuring execution time in milliseconds.
Randomly shuffle the order of lines in text using the Fisher-Yates algorithm. Browser-based line shuffler.
Calculate the similarity percentage between two strings using a Levenshtein-based distance algorithm.
Convert text to a URL-safe slug by lowercasing, removing special characters, and replacing spaces with hyphens.
Replace curly quotation marks and apostrophes with straight ASCII equivalents. Browser-based smart quotes converter.
Sort JSON object keys alphabetically at every nesting level. Browser-based JSON key sorter.
Sort the lines of multi-line text alphabetically. Supports ascending, descending, and case-insensitive sorting.
Remove all HTML tags from text, leaving only the plain text content. Browser-based HTML tag stripper.
Extract an HTML table to CSV format. Browser-based table to CSV converter.
Test and validate cron expressions and preview next execution times. Browser-based cron tester.
Compare two blocks of text line-by-line and see additions, removals, and changes. Browser-based text diff tool.
Convert text characters to their decimal ASCII code values. Browser-based text to ASCII tool.
Convert text to space-separated 8-bit binary representations of each character.
Convert text characters to hexadecimal code values. Browser-based text to hex tool.
Remove leading and trailing whitespace from every line of text. Browser-based line trimmer.
Convert a tab-separated values (TSV) file to a JSON array, using the first row as object keys.
Escape Unicode characters to \uXXXX sequences for use in source code. Browser-based Unicode escape tool.
Convert \uXXXX Unicode escape sequences back to readable characters. Browser-based Unicode unescape tool.
Convert a Unix timestamp (seconds or milliseconds) to a human-readable date and time, or convert a date back to a Unix timestamp.
Decode a percent-encoded URL string back to readable text using JavaScript's decodeURIComponent.
Percent-encode a string for safe use in URLs using JavaScript's encodeURIComponent. Runs in your browser.
Validate JSON syntax and report parse errors. Checks structure and data types in your browser.
Validate TOML syntax and report parse errors using a JavaScript TOML parser running in your browser.
Validate XML syntax and check for well-formedness errors using the browser's built-in XML parser.
Validate YAML syntax and report parse errors. Uses the js-yaml library running in your browser.
Verify a JWT's HMAC-SHA256 signature using your secret key. All cryptography runs in your browser.
Look up DNS records for any domain by querying the Google DNS API. Results include A, AAAA, MX, TXT, and CNAME records.
Convert a repeating XML element list to CSV format with column headers from element names.
Convert an XML document to a JSON representation. Attributes, text, and child elements are all preserved.
Convert YAML to a formatted JSON object. Uses js-yaml running entirely in your browser.
Yes. All tools on DevTools.Solutions are free and run directly in your browser.
No account is required. Open any tool page and start using it immediately.
No. Tool processing is client-side and does not require a backend.