Text Tools
Generate downloadable word clouds with custom shapes, palettes and fonts.
Count chars, bytes, code lines, run regex match and length checks.
Line-by-line diff with side-by-side, inline & intra-line views.
13 case conversions - uppercase, lowercase, camelCase, snake_case, kebab-case and more, one-click copy.
Bulk mask phone numbers, ID cards, bank cards, emails, IPs and more. All local.
Convert Arabic numerals, Chinese lowercase and financial uppercase amounts. Strict accounting rules, batch.
Batch convert full-width & half-width characters. Toggle letters, digits, punctuation, spaces. Keep line breaks.
Add custom line numbers to every line (e.g. 01. / | 1 |), or strip redundant line numbers copied from code.
Find and bulk-replace text by literal or regex pattern, with case-insensitivity and whole-word matching.
Reverse characters, words or lines of your text in one click.
Join multiple strings into one, with custom separator, prefix/suffix, and skip-empty/trim options.
Time Tools
Track multiple time zones in real time.
Precise countdown and live clock, millisecond precision, fullscreen monitoring and audible alert.
Convert between Unix timestamps and date-time - seconds/ms, ISO 8601, local/UTC, relative time, one-click copy.
Developer Tools
Format, minify, validate and view JSON as a tree.
Online SQL and code formatter, beautifier and minifier - multi-dialect, local-first.
Base64, URL, Hex and HTML entity in one click.
Convert between JSON, XML, CSV and YAML — locally.
Turn text and URLs into high-res QR codes with custom level, size and colors.
Real-time match highlighting, capture group inspection and replace testing, with 15+ built-in patterns.
Visually build cron expressions, decode each field and preview the next 5 run times.
Generate UUIDs (v1/v4) and ULIDs in bulk with one-click copy, fully local.
Security Tools
Sign tokens locally with HS256/384/512, or decode a token's header/payload and check expiry.
Generate strong random passwords in bulk by length and character types, with ambiguous characters excluded.
Locally assess password security - length, variety, common patterns and blacklists, with optimization tips.
Network Tools
Image Processing
Add text / image watermarks to pictures - tiled or 9-grid placement, one-click PNG / JPG export.
Combine multiple images into an animated GIF - delay, size, loop, live preview, all local.
Reverse, change speed and trim an existing GIF - decode to frames, re-encode, all local.
Batch compress images - JPEG / WebP quality, PNG lossy / lossless, format conversion, one-click ZIP, all local.
Combine multiple images into one - horizontal / vertical / grid, gap / background / fit, all local.
Combine multiple images into a single PDF - A4 / Letter / auto page size, margins & quality, all local.
Convert PNG / JPG / WebP to SVG vector files - color quantization or lossless embed, all local.
Quickly remove an image background to make a transparent PNG - one click or click to pick.
Batch-replace a specified color in PNG images, with tolerance matching and click-to-pick.
Design Tools
Convert images to multi-size ICO/PNG, or make icons from text & emoji.
Generate an artistic signature in Chinese brush or English script, one-click PNG export.
Curated Morandi / Chinese / Dopamine palettes, one-click copy, with harmony scheme generator.
Batch generate Code128, EAN-13, EAN-8 and Code39 barcodes. Export as PNG or SVG.
Unit Converters