All 67 tools, by category
Every utility on Utilities Hut runs entirely in your browser — no uploads, no accounts, no server round-trips. Pick a category or scan the full list.
JSON Formatter
Beautify and pretty-print JSON with 2-space, 4-space, or tab indentation.
Open tool →JSON Validator
Check JSON syntax and get the exact line and column of any error.
Open tool →JSON Minifier
Compress JSON by removing whitespace. See exactly how many bytes you save.
Open tool →JSON to CSV Converter
Convert a JSON array of objects into a downloadable CSV file.
Open tool →CSV to JSON Converter
Turn CSV data into a JSON array of objects, with automatic type detection.
Open tool →JSON to YAML Converter
Convert JSON documents into clean, indented YAML.
Open tool →JSON to XML Converter
Convert JSON into well-formed, indented XML markup.
Open tool →JSON to TypeScript
Generate TypeScript interfaces automatically from a JSON sample.
Open tool →JSON Sorter
Sort all object keys alphabetically for stable, diff-friendly JSON.
Open tool →JSON Escape / Unescape
Escape text for use inside JSON strings, or unescape it back.
Open tool →JSON Diff
Compare two JSON documents and list every added, removed or changed value.
Open tool →JSON Viewer
Explore JSON in a collapsible tree view with type highlighting.
Open tool →JSON Array to SQL IN Statement
Turn a JSON array — or one key from an array of objects — into a SQL IN (…) list.
Open tool →CSV to SQL IN Statement
Turn a CSV column into a quoted SQL IN (…) list — with escaping, dedupe and chunking.
Open tool →CSV to Markdown Table
Convert CSV into a GitHub-flavored Markdown table, aligned and ready to paste.
Open tool →CSV to HTML Table
Convert CSV data into a clean HTML table with an optional header row.
Open tool →CSV Delimiter Converter
Switch CSV between commas, semicolons, tabs and pipes without breaking quoted fields.
Open tool →CSV Duplicate Remover
Remove duplicate rows from CSV — whole-row or by key column — and see what was dropped.
Open tool →CSV Column Extractor
Pick, reorder or drop CSV columns and export the slimmed-down file.
Open tool →Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text. Full UTF-8 support.
Open tool →HTML Entity Encoder / Decoder
Escape special characters into HTML entities, or decode entities back to text.
Open tool →Number Base Converter
Convert numbers between binary, octal, decimal, hex and any base up to 36.
Open tool →URL Encoder / Decoder
Percent-encode URLs and query strings, or decode them back to plain text.
Open tool →Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and back.
Open tool →Text to Binary Converter
Convert text to binary (and binary back to text) instantly.
Open tool →CSS Minifier
Minify CSS by stripping comments and whitespace. Shows size savings.
Open tool →CSS Gradient Generator
Design linear and radial gradients visually and copy the CSS code.
Open tool →Color Palette Generator
Generate shades, complementary and analogous palettes from any color.
Open tool →Hex to RGB Converter
Convert hex color codes to RGB and HSL (and back), with a live preview.
Open tool →Image Resizer
Resize images to exact pixels or a percentage — right in your browser, no upload.
Open tool →Image Compressor
Shrink JPEG and WebP file sizes with a quality slider and live before/after comparison.
Open tool →Image Converter
Convert images between PNG, JPEG and WebP formats without uploading them anywhere.
Open tool →Image to Base64 Converter
Turn any image into a Base64 data URI with ready-to-paste HTML and CSS snippets.
Open tool →Image Color Picker
Pick any pixel's hex code from a photo and extract its dominant color palette.
Open tool →Image Metadata Remover
Strip EXIF metadata — GPS location, camera, timestamps — from photos before sharing.
Open tool →Image Cropper
Crop images by dragging a selection, with free-form or fixed aspect ratios.
Open tool →Image Rotate & Flip
Rotate images in 90° steps or mirror them horizontally and vertically.
Open tool →Favicon Generator
Turn any image into a complete favicon set: a real .ico plus every PNG size.
Open tool →SVG to PNG Converter
Render SVG markup or files to crisp PNG at any scale — no upload, no rasterizer install.
Open tool →Image Watermark
Stamp a text watermark on photos — position, size, color and opacity — locally.
Open tool →Image Measurement Tool
Measure real distances on any photo or plan by calibrating a known length as the scale.
Open tool →Audio Trimmer
Cut a section out of any audio file and download it as WAV. No upload, all local.
Open tool →Audio to WAV Converter
Convert MP3, OGG, M4A or any playable audio to uncompressed WAV in your browser.
Open tool →Audio Volume Booster
Boost quiet audio or normalize it to a target peak, then export as WAV.
Open tool →Audio Speed Changer
Speed up or slow down audio from 0.25× to 4× and download the result as WAV.
Open tool →Tone Generator
Play precise sine, square, triangle or sawtooth test tones at any frequency.
Open tool →Online Metronome
A precise metronome with tap tempo, adjustable BPM, time signatures and accents.
Open tool →Voice Recorder
Record from your microphone and download the take — nothing leaves your device.
Open tool →Protect PDF with Password
Encrypt a PDF with AES-256 right in your browser — the file never leaves your device.
Open tool →Remove PDF Password
Unlock a password-protected PDF you own by entering its password. 100% local.
Open tool →PDF Form Filler
Fill form fields right on the page preview, or add text anywhere on any PDF — no upload.
Open tool →Sign PDF
Draw or upload a signature and place it on any page — signed on-device, never uploaded.
Open tool →Word Counter
Count words, characters, sentences, paragraphs and reading time live.
Open tool →Markdown to HTML Converter
Convert Markdown to clean HTML with a live rendered preview.
Open tool →Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
Open tool →Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words of classic lorem ipsum.
Open tool →Typing Speed Test
Measure your typing speed in WPM with live accuracy tracking. One minute, no sign-up.
Open tool →HTML to Markdown Converter
Convert HTML markup — or rich text pasted straight from a page — into clean Markdown.
Open tool →Email Subject Line Tester
Score your subject line for length, spam triggers and open-rate best practices.
Open tool →Email Spam Checker
Scan your email copy for spam trigger words before you hit send.
Open tool →Email Signature Generator
Create a clean HTML email signature that works in Gmail and Outlook.
Open tool →Regex Tester
Test JavaScript regular expressions against sample text with live matches.
Open tool →UUID Generator
Generate random UUID v4 identifiers — one or hundreds at a time, cryptographically random.
Open tool →Password Generator
Create strong random passwords with custom length and character sets.
Open tool →SHA Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text.
Open tool →JWT Decoder
Decode a JSON Web Token's header and payload and check its expiry — locally.
Open tool →Text Diff Checker
Compare two blocks of text line by line and highlight every difference.
Open tool →