Browse tools by category

264 free tools, grouped by the job you need done.

100% client-side Free forever No sign-up

Every tool on this site runs inside your own browser, needs no account and costs nothing. Pick the category that matches the file or the format you are working with and you will land on a short page listing only the relevant tools, each with a one-line description of what it does.

PDF 17 Merge, split, compress and convert PDFs without uploading them anywhere. Images 16 Convert between formats, resize, crop and hit an exact file size. QR & Links 6 Make QR codes and shareable links that keep working forever. Video & Subtitles 12 Convert subtitle formats and fix timing without touching the video. Audio 16 Convert formats, trim clips and shrink files without an upload. Code & Dev 109 Format, minify, convert and inspect code — all locally. Data & Convert 80 Move data between JSON, CSV, YAML, XML and back. Text 18 Count, clean, sort, compare and reshape text instantly. Design & CSS 23 Build gradients, shadows and effects with copy-ready CSS. Security 16 Hashes, tokens, passwords and encryption — computed locally. DevOps 60 Cron, YAML, containers and configs — checked before you ship. Network & Web 12 Subnet maths, URL parsing and header inspection in the browser. Privacy 6 Strip metadata and clean files before you share them.

About these tools

How to pick a category

Categories here are organised by the material you are holding, not by the technology behind the tool. If you have a file, start with its format — PDF, image, video, audio. If you have text or structured data, the text and data categories cover counting, converting and validating it. If you are writing something, the code, design and DevOps categories hold the formatters, generators and validators. A tool can belong to more than one category when it genuinely serves both, so the counts here add up to more than the number of distinct tools.

Why every tool runs in your browser

None of these tools upload your file. Each one is JavaScript that ships with the page and runs on your own machine, which has three consequences worth knowing. Your data stays private, because there is no server to receive it and no log to appear in. There is no size limit beyond what your device can hold in memory, so a large video is a question of patience, not of a paid tier. And nothing queues behind other users, so the result appears as fast as your hardware can produce it. The trade-off is that a very large file will use real memory and a slow device will take real time — the work has to happen somewhere, and here that somewhere is your own computer.