Free tools

Free online tools that run in your browser

328 tools for sound, writing, time and money, photos and PDFs, SEO files, daily practice and quick conversions. They run in your browser: these pages don't upload your files, there is nothing to install and no account to make.

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The tools people open most.

Sound & device tests

Test your mic, speakers, screen and sensors, then tune, record and play.

Documents

Merge, sign, convert and fill PDFs and paperwork without uploading them.

Developer kit

Push tests, validators, generators and code helpers for app and web developers.

Also by us: Storepanes, a web app with a free plan for designing App Store and Google Play screenshot sets. It is not one of the free tools above.

Photo & video

Resize, compress, convert and edit photos and video in your tab.

Everyday calculators

Quick answers for money, tax, health, dates and units.

Learn, play & practice

Study aids, word games, puzzles and daily practice.

All tools A–Z

Every free tool on the site, in one list.

Need more than a browser tab?

Each tool has an iPhone, Mac or Android app that keeps the job on your phone: offline, with history, reminders and the features a web page cannot reach.

Browse all apps

Questions

Are these tools really free?

Yes. Every tool on this page is free to use, with no account, no trial and no limit on how often you use it.

Is anything I use uploaded?

No. The tools run inside your browser. These pages don't upload your microphone audio, photos, text or push payloads, and they are gone when you close the tab, unless you download the result.

Do the tools work offline or on my phone?

They work in any current browser on a phone, tablet or computer. Most keep working without a connection once the page has loaded. Rates, times and other live data need a connection. When you want the same job every day on your iPhone, each tool links to the matching app.