This is the full directory of How7o’s free online tools — 53 browser-based utilities across six categories, every one of them free, instant, and private. Nothing here needs an account or an install, and because each tool processes your files and text on your own device, nothing you work with is ever uploaded to a server. Pick a category above, search by name, or scan the A–Z list — whichever way you navigate, you are one click from a working tool.
What each category covers
The image tools handle the jobs photos demand daily: compressing JPG, PNG and WebP files below upload limits, converting HEIC and AVIF into formats every app opens, and upscaling small pictures with AI. The text and string utilities count words and characters, convert case, generate strong passwords, and format JSON and encodings for developers and writers alike. The video tools trim, merge, speed up and mute clips — and extract audio — using FFmpeg compiled to WebAssembly, so even large files never leave your machine.
For technical work, the developer tools cover hashes, JWT decoding, UUIDs, Unix timestamps, and color and CSS unit conversion — all client-side, which is the only safe place to inspect a credential. The PDF tools center on a full in-browser editor for adding text, signing and whiting-out documents, plus converters that turn PDF pages into JPG, PNG, WebP, TIFF or AVIF images. And the calculators and generators round things out with an exact age calculator, a ratio solver, a customizable QR code generator, and a subtitle converter.
Why these tools run in your browser
Most “free online tools” work by uploading your file to a server, processing it there, and letting you download the result — which means queues, size limits, and your documents sitting in someone else’s storage. Every tool in this directory takes the opposite approach: the processing code downloads to your browser and runs locally. That is why a 500 MB video starts processing immediately, why a signed contract never touches a third-party server, and why nothing here has a “pro” tier — there is no per-file server cost to charge you for.
The collection grows every month. If a tool you need is missing, the contact page is the fastest way to get it built — and for step-by-step help with the surrounding problems, the tutorials and blog pick up where the tools leave off. Looking for fun instead of work? The prank screens are one tab away.