Web Tools & Utilities

Around 454k stars of free public APIs sorted by category with auth, HTTPS and CORS support noted for each.

The standard reference list for command line applications, from file managers and music players to weather, notes and productivity tools.

An advanced web-based image compression app by Google for reducing file size while previewing real-time quality side-by-side.

One-click background removal that still beats most alternatives on hair and fine edges.

Best free graphing calculator on the web, equally good for maths homework and quick visual sanity checks.

Computational answer engine for units, dates, nutrition, statistics and anything else with a real numeric answer.

Serious diagramming for flowcharts, floor plans and network maps that saves straight to your own drive.

Clean, ad-free media downloader for video and audio from dozens of platforms, no tracking or paywalls.

GCHQ's "cyber Swiss Army knife" for encoding, decoding, hashing, parsing and data wrangling by drag-and-drop recipe.

Handles over 200 formats when you need the awkward conversion nothing else supports.

Large no-signup suite of PDF operations including compression, OCR, protection and format conversion.

Open-source file converter for images, audio, video and documents that runs conversions in your browser rather than on someone's server.

Simple browser tools for cutting audio, trimming video, converting files and editing PDFs, all without an account.

Long-running GIF and short-video workshop for resizing, cropping, splitting, optimizing and adding text.

Paint over unwanted objects, people or watermarks in a photo and have them removed cleanly.

Interactive SVG optimizer with live preview and a slider for every cleanup rule.

Surprisingly capable open-source waveform audio editor that runs entirely in a browser tab.

Splits any track into vocals and instrumental in your browser, plus pitch shift, tempo and key detection.

Infinite whiteboard that feels instant, great for rough thinking and quick shared sketches.

Compares two texts, documents, images or folders and highlights exactly what changed.

Open-source grammar and style checker covering 30+ languages, with an optional self-hosted server.

Handy grab-bag of everyday converters, generators and checkers in one fast interface, self-hostable if you want it offline.

Thousands of ready-made calculators for finance, health, construction, physics and everyday what-ifs.

Open-source Doodle alternative for scheduling polls, with a self-hosted option.

Open-source generator that turns plain QR codes into genuinely attractive, scannable designs.

Reads EXIF, IPTC and file metadata from images, video and documents so you can see what a file quietly reveals.

Raycast's tool for turning code snippets into polished, shareable images. State is stored in the URL so there's nothing to sign up for.

Polyglot converter between code and data formats, like JSON, YAML, TOML, CSS-in-JS, and GraphQL to TS types, that quietly saves hours of manual rewriting.

A fast, free online tool to convert Apple HEIC/HEIF photo files into widely compatible JPEG format instantly.

Home of Winaero Tweaker and software utilities for tweaking, customizing, and unlocking hidden features in Microsoft Windows.

Free, browser-based PDF editor and form filler with zero file uploads to external servers.

Visual drag-and-drop builder for creating professional GitHub README files.

An online tool to download .CRX source files directly from Chrome extensions or inspect their internal code.

A powerful, lightweight context-menu manager for Windows File Explorer that restores and customizes right-click menus.

A fun web app that turns any uploaded image or avatar into an animated "patting hand" GIF meme.

A suite of free digital tools and utilities for image editing, text manipulation, color conversion, and web development.