Image Compressor
Reduce image file size for WebP, JPEG and PNG directly in your browser. Quality mode or target size.
JSON ↔ CSV
Convert JSON to CSV or CSV to JSON. Custom delimiter, table preview, direct download.
YAML ↔ JSON
Convert YAML to JSON or JSON to YAML. Sort keys, file import, copy and download. 100% local.
Markdown → HTML
Convert Markdown to HTML with live preview. GFM tables, task lists, code blocks. Copy or download the result.
Image → ASCII Art
Convert images to colored or monochrome ASCII art. Character sets, contrast, PNG export. 100% local.
UUID v4 / v7 Generator
Generate UUID v4 (random) and v7 (timestamp-sorted) identifiers for databases and APIs. Bulk, formats, JSON/CSV export.
Base64 Encoder / Decoder
Encode and decode text, files, and images to Base64. URL-safe, MIME, PEM, Data URI. 100% local.
JWT Decoder
Decode, verify, and build JWT tokens. HS256/RS256/ES256 signature verification, colored claims, time travel. 100% local.
Regex Tester & Visualizer
Test regex with live highlighting, named groups, lookaheads, replace mode, split mode, token explainer. 100% local.
Color Palette Extractor
Extract dominant colors from any image. Hex, RGB, HSL, CSS variables, SCSS, JSON, SVG, PNG export. K-means clustering. 100% local.
Image Color Replacer
Replace a specific color in any image. Built-in eyedropper, tolerance, edge smoothing, multi-rules, luminance preservation. 100% local, no upload.
Favicon Generator
Generate all favicon sizes (16×16 to 512×512), a multi-size favicon.ico and site.webmanifest from one image. ZIP download, HTML snippet. 100% local.
EXIF Metadata Remover
Strip EXIF metadata from photos. GPS, camera, date, software erased without sending files to any server. Binary JPEG stripping — no recompression, quality intact.
Placeholder Image Generator
Generate placeholder and dummy images at any dimension. Custom colors, label text, PNG / JPEG / SVG export. Free, no upload, 100% in-browser.
HEX ↔ RGB ↔ HSL ↔ OKLCH
Convert colors between HEX, RGB, HSL, and OKLCH instantly. Live preview, native color picker, one-click copy per format. 100% local, no upload.
WCAG Contrast Checker
Check color contrast ratio against WCAG 2.2 AA and AAA. Pass/fail for text, large text, and UI components. APCA preview. Free, 100% local.
CSS Gradient Generator
Build linear, radial and conic CSS gradients visually. Unlimited color stops, drag handles, live preview, preset gallery and one-click CSS copy. Free, 100% local.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Seconds, milliseconds, any timezone. Live clock, batch mode, ISO 8601, RFC 2822. 100% local.
Date Calculator
Calculate days, weeks, months and business days between dates. Add or subtract dates, run countdowns, and check ages. 100% local.
Business Days Calculator
Count working days between two dates or add N business days to any date. Holiday calendars for France, US, UK, Germany, Canada. Custom workweek, CSV export, shareable URL. 100% local.
Countdown Timer
Count down to any date with days, hours, minutes and seconds. Multiple events, timezones, notifications, URL sharing. 100% local.
ISO Week Calculator
Find the ISO 8601 week number for any date, convert ISO week to date range, and browse a full year calendar. 100% local, no upload.
Time Zone Converter
Convert any time between 600+ world time zones. World clock, meeting planner, DST-aware, 12h/24h format. Free, 100% local.
French Public Holidays
List every French jour férié for any year. Dates, weekday, bridge days (ponts), Alsace-Moselle & overseas variants, iCal and CSV export. 100% local.
Cron Expression Generator
Build, explain and validate cron expressions. Field builder, plain-English meaning, next run times, seconds/Quartz support, presets. 100% local.
Word & Character Counter
Count words, characters, sentences and paragraphs in real time. Reading time, speaking time, readability score, keyword density and platform limits. 100% local.
Word Frequency Counter
Analyze word frequency in any text. Find most used words, repeated words, keyword density and stop-word filtered counts. Export CSV, 100% local.
Remove Duplicate Lines
Remove duplicate lines from any text instantly. Case-sensitive or insensitive matching, trim whitespace, sort output, keep blank lines and show duplicates only. 100% local, no upload.
Line Sorter
Sort lines alphabetically A-Z or Z-A, by length, naturally (file10 after file9), or randomly. Remove duplicates, trim whitespace, custom delimiter. 100% local, no upload.
Remove Extra Spaces
Collapse multiple spaces, trim lines, remove blank lines and convert tabs. Clean whitespace from any text in one pass. Free, 100% local, no upload.
Case Converter
Convert text to camelCase, snake_case, PascalCase, kebab-case, Title Case and 9 more formats instantly. Free, 100% local, no upload.
HTML Tag Stripper
Remove all HTML tags from any markup and get clean plain text. Preserve line breaks, decode entities, bullet lists. No upload, 100% local.
Random Line Picker
Pick a random line from any list. Name picker, winner draw, weighted random, shuffle mode. No duplicates, history export. Free, 100% local, no upload.
Strikethrough Text Generator
Generate crossed-out text that works on Discord, Instagram, Twitter, Facebook and WhatsApp. 5 Unicode styles, copy in one click. Free, no account, 100% local.
Unicode Bold & Italic Text
Generate bold, italic, script, fraktur, double-struck and 14 Unicode text styles. Copy paste in Instagram, Twitter, LinkedIn, Discord — no app needed. 100% local.
Upside Down Text Generator
Flip, reverse and mirror any text using Unicode upside-down characters. Copy paste on Instagram, TikTok, Discord, WhatsApp. Free, no account, 100% local.
Fancy Text Generator
Generate cursive, aesthetic, bubble letters, gothic, upside-down, zalgo and 15+ fancy text styles. Copy paste on Instagram, TikTok, Discord — free, no upload.