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Browse 200 free tools by topic, including CSV, e-commerce, images, random pickers, dates, web development, and more.
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Use a topic hub to move between tools for the same kind of task.
CSV & data tools (10)Free tools for inspecting CSV encoding and headers, finding duplicates, merging or splitting files, extracting columns, and filtering rows.E-commerce import tools (49)Preflight tools for product-import CSVs used by Mercari Shops, BASE, STORES, Shopify, WooCommerce, ColorMe, and other e-commerce platforms.Image & print tools (16)Tools for DPI, pixels, print dimensions, image conversion, resizing, compression, cropping, and other image-production tasks.Random pickers & generators (16)Free tools for randomly picking names, numbers, seats, teams, orders, topics, and lightweight gacha-style results.Date, business day & time tools (14)Tools for business-day calculations, date arithmetic, durations, ISO 8601, Unix timestamps, calendars, countdowns, and time conversion.Color conversion tools (6)Tools for converting RGB, HEX, and HSL values and picking colors from images for web and design work.File transfer & storage tools (7)Tools for estimating upload, download, network transfer, disk copy, migration time, and storage-unit conversions.Web developer tools (26)Utilities for URLs, HTTP, JSON, HTML, CSS, JWT, regex, hashes, UUIDs, Markdown, SQL, and other everyday web-development tasks.Text & list tools (12)Tools for counting, deduplicating, sorting, comparing, replacing, extracting, and transforming text and line-based lists.Business & everyday calculators (12)Small calculators for margin, markup, discounts, tax, hourly rates, work time, unit prices, electricity, travel costs, and everyday arithmetic.Publishing & event tools (20)Tools for spine width, cover dimensions, DPI, box counts, inventory, break-even, cash float, packing, and publishing or convention preparation.Marketing & CRM tools (12)Tools for preparing and validating Klaviyo, Google Ads Customer Match, Merchant Center, UTM, and other marketing data.