Fast Developer Tools crafted for everyday work
Format JSON, decode Base64, generate UUIDs, convert timestamps, inspect tokens, test regex, and handle frontend helper tasks — all directly in your browser.
Featured Tools
Quick access to popular developer utilities
JSON Formatter
Format and beautify JSON instantly.
JSON Validator
Validate JSON and detect syntax errors.
Regex Tester
Test regular expressions against text.
Base64 Encode
Encode plain text to Base64.
Base64 Decode
Decode Base64 into plain text.
SHA256 Generator
Generate SHA-256 hashes.
Popular Tools
Start with the most used utilities
JSON Formatter
Format and beautify JSON instantly.
JSON Validator
Validate JSON and detect syntax errors.
Regex Tester
Test regular expressions against text.
Base64 Encode
Encode plain text to Base64.
Base64 Decode
Decode Base64 into plain text.
SHA256 Generator
Generate SHA-256 hashes.
JWT Decoder
Decode JWT payloads quickly.
Timestamp Converter
Convert Unix timestamps and dates.
UUID Generator
Generate UUIDs instantly.
HEX to RGB
Convert HEX colors to RGB.
Categories
Browse tools by workflow
Data Tools
Format, validate, compare, and convert structured data.
Encoding Tools
Encode and decode common web and developer formats.
Crypto Tools
Generate hashes and inspect token data quickly.
Time Tools
Convert timestamps, dates, schedules, and timezones.
Generators
Generate UUIDs, passwords, random values, and slugs.
Dev UI Tools
Frontend helper tools for colors, CSS, images, and UI work.
All Tools
Full developer tool catalog
JSON Formatter
Format and beautify JSON instantly.
JSON Validator
Validate JSON and detect syntax errors.
JSON Minify
Compress JSON by removing whitespace.
JSON Diff
Compare two JSON objects.
JSON to CSV
Convert JSON arrays into CSV.
CSV to JSON
Convert CSV text into JSON.
JSON to YAML
Convert JSON into YAML.
YAML to JSON
Convert YAML into JSON.
JSON Path Tester
Test simple JSON paths against JSON.
Regex Tester
Test regular expressions against text.
Base64 Encode
Encode plain text to Base64.
Base64 Decode
Decode Base64 into plain text.
URL Encode
Encode text for URLs.
URL Decode
Decode URL-encoded text.
HTML Encode
Escape special HTML characters.
HTML Decode
Decode HTML entities into plain text.
Unicode Encode
Convert text into Unicode escapes.
Unicode Decode
Decode Unicode escape sequences.
Query String Parser
Parse query strings into key-value pairs.
Query String Builder
Build query strings from JSON.
SHA256 Generator
Generate SHA-256 hashes.
SHA1 Generator
Generate SHA-1 hashes.
MD5 Generator
Generate MD5-style checksums.
JWT Decoder
Decode JWT payloads quickly.
Hash Compare
Compare two hashes quickly.
Timestamp Converter
Convert Unix timestamps and dates.
Epoch Converter
Convert epoch time values.
Timezone Converter
Convert times across common timezones.
Date Difference Calculator
Calculate difference between dates.
Cron Expression Parser
Understand cron schedules easily.
UUID Generator
Generate UUIDs instantly.
Password Generator
Generate secure passwords.
Random String Generator
Generate random strings.
Random Number Generator
Generate random numbers.
Slug Generator
Generate URL-safe slugs.
HEX to RGB
Convert HEX colors to RGB.
RGB to HEX
Convert RGB colors to HEX.
CSS Gradient Generator
Create CSS gradients visually.
Image to Base64
Convert images to Base64 strings.
Base64 to Image
Preview Base64 as an image.
SVG to Base64
Encode SVG into Base64.
Favicon Generator
Load an image for favicon prep.
CSS Clamp Generator
Generate CSS clamp() values.
Developer Tool Hub
Free browser-based tools for data, encoding, crypto, time, generators, and UI work
DevToolCraft is built for developers who want fast utilities without leaving the browser. Instead of jumping between scripts, editor snippets, and one-off online converters, you can open a focused tool page and finish the task immediately.
The catalog includes utilities for JSON formatting and validation, Base64 conversion, URL encoding, timestamp conversion, hash generation, regex testing, UUID generation, color conversion, CSS helpers, and image-related workflows. Each tool page is designed as a direct landing page with a runnable UI, SEO content, FAQ, and related internal links.
This homepage is the best starting point when you are not sure which tool you need yet. Browse by category, search by keyword, or jump into the most-used tools below to move from problem to result faster.
Browse Popular Tool Categories
Use category pages when you know the workflow area but want to compare several related tools before choosing one.
Start With These High-Intent Tools
These pages target common developer tasks and work well as first-entry pages from search and internal navigation.
JSON Formatter
Format and beautify JSON instantly.
JSON Validator
Validate JSON and detect syntax errors.
Regex Tester
Test regular expressions against text.
Base64 Encode
Encode plain text to Base64.
Base64 Decode
Decode Base64 into plain text.
SHA256 Generator
Generate SHA-256 hashes.
JWT Decoder
Decode JWT payloads quickly.
Timestamp Converter
Convert Unix timestamps and dates.
Why use DevToolCraft
Built for speed, clarity, and everyday developer workflows
Browser-based
Most tools run entirely in the browser, so common tasks feel instant and lightweight.
Tool-first UX
Simple layouts, fast input-output flows, recent tools, and command palette navigation reduce friction.
SEO-ready structure
Each tool and category is designed as a clean landing page for long-term growth.