Tool Collections
Stop digging through dozens of pages: our three collections group the most-used tools along "JSON data", "image editing" and "everyday math" lines, each with an intro, curated groups and FAQs to help you pick the right tool faster.
JSON Tools Hub: Format, Validate & Convert Online
Debugging a deeply nested API response, tidying up a config file, or preparing a clean data sample for a colleague — working with JSON is part of nearly every developer's day. This hub gathers the most frequent JSON tasks behind one door: paste your payload to beautify the indentation, minify it for production, sort keys alphabetically, or flatten and restore nested structures on demand. When data has to travel between systems, convert it to YAML, XML, CSV, Excel or even SQL statements in a single click. For transport and storage scenarios, Base64, URL and Gzip codecs are standing by. Every tool runs entirely inside your browser: nothing is uploaded to any server, there is no account to create, and the processing speed depends only on your own device.
15 tools · Open collection →Image Toolkit Hub: Convert Formats, Adjust Quality & Watermark Online
From compressing screenshots and meeting marketplace image specs to crafting social media covers, image tasks are everywhere — yet you don't always want to launch heavyweight desktop software. This hub moves the most common operations into your browser: drop an image in and convert freely between JPG, PNG, WebP and BMP, or swap between image files and Base64 text so they can be embedded straight into web pages or stylesheets. The quality section offers fine-grained control over brightness, contrast, saturation, HSL, sharpening and quality-based compression. Watermarks, cropping, resizing, rotation, flips and transparent rounded corners cover the final step before publishing. Need a nine-grid collage, a QR code or a placeholder image? One click each. Every decode and render happens locally: your photos never leave the browser.
23 tools · Open collection →Online Calculators Hub: Loans, Taxes & Unit Conversion
Working out a mortgage payment, checking payroll tax, converting shoe sizes for overseas shopping — numeric questions pop up more often than you'd think. This hub curates the highest-frequency calculations and conversions: the loans & taxes section covers mortgages, car financing, annual bonus tax, stamp duty and online-loan interest with itemized results the moment you enter amounts and rates, including side-by-side repayment comparisons. The unit section handles length, weight, temperature, area, volume, speed and time, plus shoe-size charts for cross-border shopping. Daily-life extras include profit-margin/ROI, a payslip generator, blood-type inheritance rules and holiday countdowns. Formulas are transparent and easy to follow, everything computes right in your browser, no personal data is collected — open and calculate.
17 tools · Open collection →