Business Days
Working days between two dates.
All-in-one utilities for developers and everyday tasks. Mostly in-browser, no signup.
Search by name, task or keyword.
Find the right tool for your task.
Working days between two dates.
Project your savings, set goals, and compare NISA and iDeCo.
Compress JPEG/WebP at a chosen quality.
Convert PNG / JPEG / WebP / AVIF.
Resize keeping aspect ratio (canvas).
Free or fixed-aspect crop (canvas).
Merge multiple PDFs into one file.
Reorder, rotate, delete, or split PDF pages by range.
Add a text watermark to every page.
Stamp page numbers on a PDF.
Characters, words, lines, bytes, zenkaku/hankaku.
camelCase, snake_case, kebab, PascalCase.
Generate placeholder paragraphs.
Compare two blocks of text.
Prettify, minify, and validate JSON.
Decode, sign, and verify JSON Web Tokens.
Test regular expressions with live matches.
Bulk-generate v4 UUIDs.
Working days between two dates.
Convert epoch seconds to dates.
Compare times across zones.
Duration between two dates.
Project your savings, set goals, and compare NISA and iDeCo.
Split a bill equally or by weight, with tip and rounding.
Convert cost, price, gross margin %, and markup %.
Original ↔ discount % ↔ final price; optional multi-discount stack.
Design CSS box-shadows.
Design CSS border-radius visually.
Design CSS cubic-bezier easing curves.
Design frosted-glass CSS cards.
Encode or decode data to Base64 format.
Percent-encode strings for use in URLs.
Break a URL into readable components.
Escape or unescape HTML entity codes.