Developer tools that workdirectly in your browser
Format, convert, encode, decode, generate, and inspect developer data with fast tools designed to keep your workflow simple and your input local to your browser.
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25 tools found
JSON Formatter & Validator
Format, validate, and prettify JSON data in your browser for easier reading, inspection, and debugging.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to readable text directly in your browser.
URL Encoder / Decoder
Percent-encode URI components or decode percent-encoded text for URLs, paths, and query values in your browser.
HTML Entity Encoder / Decoder
Convert reserved characters and symbols into HTML entities or decode entity codes back to plain text instantly.
UUID / GUID Generator
Generate bulk cryptographically secure Version-4 UUIDs (Universally Unique Identifiers) instantly in your browser.
CSS Minifier & Formatter
Minify CSS to reduce unnecessary source characters or beautify stylesheets for easier reading and debugging.
MD5 Hash Generator
Generate legacy 128-bit MD5 message digests from text for compatibility, checksums, and non-security workflows.
JS Minifier & Formatter
Minify JavaScript source to reduce unnecessary formatting characters or beautify code for easier inspection and debugging.
JWT Decoder
Decode and inspect JSON Web Token (JWT) headers, claims, and payload data instantly inside your browser.
SHA-256 Hash Generator
Generate 256-bit SHA-256 message digests from text for checksums, fingerprints, and development workflows.
Regex Tester
Test, debug, and evaluate regular expressions in real-time with live pattern highlighting and flag controls.
SQL Formatter
Format and beautify SQL using selectable dialect, keyword casing, and indentation options for easier reading and review.
CSV to JSON Converter
Convert CSV tabular data or spreadsheet exports into a clean, structured JSON array of objects instantly.
JSON to CSV Converter
Convert JSON arrays or objects into clean, downloadable, or copyable CSV spreadsheet format instantly in your browser.
Markdown to HTML Converter
Convert raw Markdown syntax into clean, semantic HTML markup instantly with a real-time side-by-side preview in your browser.
URL Parser
Parse URLs into normalized protocol, origin, hostname, port, path, fragment, and decoded query-parameter components in your browser.
Color Code Converter
Convert color values between HEX, RGB, HSL, and HSV formats instantly with a live visual color preview in your browser.
Text Case Converter
Convert text between uppercase, lowercase, title case, camelCase, snake_case, PascalCase, and kebab-case instantly in your browser.
HTML Formatter
Format or minify HTML source for easier inspection, cleaner indentation, or more compact markup output.
XML Formatter
Format, beautify, and validate XML documents with precise indentation and syntax checking.
URL Slug Generator
Convert article titles, product names, and plain text into clean, human-readable, SEO-friendly URL slugs.
Lorem Ipsum Generator
Generate customizable Lorem Ipsum by paragraphs, sentences, words, or lists, with plain-text and HTML-oriented output options.
String Length & Word Counter
Count characters, words, sentences, paragraphs, reading time, and UTF-8 byte size in real-time as you type.
SHA Hash Generator (SHA-1 / SHA-2)
Generate SHA-1, SHA-256, SHA-384, and SHA-512 message digests for checksums, comparisons, and development workflows.
JSON Minifier
Compress and minify JSON strings by stripping unnecessary whitespace, tabs, and line breaks to minimize payload size.
Popular
Popular developer tools
Quick access to commonly used utilities.
JSON Formatter & Validator
Format, validate, and prettify JSON data in your browser for easier reading, inspection, and debugging.
Open tool →EncodersBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to readable text directly in your browser.
Open tool →EncodersURL Encoder / Decoder
Percent-encode URI components or decode percent-encoded text for URLs, paths, and query values in your browser.
Open tool →EncodersJWT Decoder
Decode and inspect JSON Web Token (JWT) headers, claims, and payload data instantly inside your browser.
Open tool →UtilitiesRegex Tester
Test, debug, and evaluate regular expressions in real-time with live pattern highlighting and flag controls.
Open tool →GeneratorsUUID / GUID Generator
Generate bulk cryptographically secure Version-4 UUIDs (Universally Unique Identifiers) instantly in your browser.
Open tool →Explore
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Privacy-first workflow
Built for quick, local developer tasks
100 DevTools Hub is designed around browser-based utilities so common formatting, conversion, encoding, decoding, and generation tasks can be completed without creating an account or sending routine input through a traditional server workflow.
Browser-based
Tools are designed to process their inputs directly in the browser whenever the tool supports it.
Fast to access
Open a tool and start working without account creation or a multi-step setup process.
Developer focused
Focused utilities for common web, data, text, encoding, and debugging workflows.