80 developer utilities. Search or filter to jump in.
Free online JSON formatter and beautifier — format and indent JSON instantly with syntax highlighting.
Validate JSON and pinpoint syntax errors.
Minify JSON by stripping whitespace.
Convert a JSON array into a CSV file.
Explore JSON as a collapsible tree.
Diff two JSON documents side by side.
Escape a string for safe JSON embedding.
Unescape a JSON string back to raw text.
Format HTML with proper indentation.
Minify HTML for production.
Encode HTML entities for safe output.
Decode HTML entities to plain text.
Preview raw HTML live in a safe sandboxed iframe, or read it as source.
Escape &, <, >, " and ' so a string is safe to embed inline in HTML.
Format CSS with proper indentation.
Minify CSS for production.
Design linear gradients with a live preview.
Free online box-shadow generator with multiple layers, inset support and live CSS preview.
Visual border-radius generator with per-corner controls and copyable CSS output.
Generate frosted glass CSS with backdrop-filter blur, opacity and border controls.
Soft UI neumorphism CSS generator with flat, concave, convex and pressed shapes.
CSS animation generator with keyframes, timing functions, delay and direction controls.
Visual flexbox playground generating display:flex CSS with live layout preview.
CSS Grid generator with column, row, gap and custom track sizing plus live preview.
Fluid typography clamp() generator with min/max font size and viewport calculations.
Visual polygon and shape clip-path builder with live preview and copyable CSS output.
Visual curve editor for creating custom CSS transition-timing-function easing curves.
Live preview text-shadow builder with offset, blur and color controls.
Generate blur, brightness, contrast, saturate and other CSS filter effects with live preview.
Create pure-CSS triangle shapes using the border trick, with direction and size controls.
Custom scrollbar CSS generator with track, thumb, width and hover state controls.
Paste a CSS selector and instantly see its calculated specificity score.
Build and export a :root custom-properties color and spacing palette.
Free online JavaScript beautifier — format and indent messy JS code instantly in your browser.
Minify JavaScript for production.
Test regular expressions online with live match highlighting — a free regex tester and debugger.
Pretty print console log output — expand inline JSON payloads and tidy stack traces.
Convert between date and Unix timestamps.
Convert Unix time to human dates.
Generates ready-to-use HTML and JS code for a login form with email/password fields, basic client-side validation, and a show/hide password toggle.
Turn your form fields into ready-to-use JS validation code with required checks, email format and minimum password length.
Generate a ready-to-use JS deep clone utility using structuredClone with a recursive fallback, plus example usage.
Pick a date pattern like DD/MM/YYYY or relative time and generate a dependency-free JS date formatting function.
Generate a Promise-based sleep(ms) utility for async/await delays, with cancellation support and example usage.
Decode JWT tokens online free — inspect JWT header and payload instantly, no signup needed.
Generate v4 UUIDs in bulk.
Compute SHA-256 of any text.
Compute SHA-1 of any text.
Compute SHA-512 of any text.
Compute MD5 checksum of any text.
Generate strong, secure random passwords online free — customize length and character sets.
Estimate password entropy and strength.
Generate and verify bcrypt password hashes online with adjustable cost rounds.
Generate HMAC signatures with SHA-256, SHA-512, SHA-1 or MD5 in hex and Base64.
Convert text between casing styles.
Live word, character and reading stats.
Count characters, letters and spaces.
Count paragraphs and sentences.
Generate placeholder text.
Convert text to URL-friendly slugs.
Deduplicate lines of text.
Sort lines alphabetically.
Reverse text character by character.
Generate random strings and words.
Encode text to Base64 online free — a fast, client-side Base64 encoder, no data leaves your browser.
Decode Base64 to text.
Percent-encode URLs and components.
Decode percent-encoded URLs.
Encode text as HTML entities.
Decode HTML entities to text.
Encode text to \uXXXX Unicode escape sequences, including emoji and CJK characters.
Decode \uXXXX Unicode escape sequences back to readable text.
Free QR code generator online — create custom QR codes with adjustable size and color.
Scan QR codes from your camera or an image.
Pick colors and convert HEX / RGB / HSL.
Convert between HEX and RGB colors.
Generate random SVG blobs.
Generate favicons in multiple sizes.
Generate CSS from visual controls.
Shrink and clean up SVG files.
