Free Online Tools

Free Online Tools

26 tools that do their work inside your browser. Nothing is uploaded, nothing is stored, and none of them ask you to sign up or cap how much you can do.

Most used Free, in your browser

Code playgrounds

Write it. Run it. Watch it answer.

Write code and run it right in the tab: nothing to install, no account, and your work stays on your device.

Web PlaygroundRunAuto-run

index.htmlstyles.cssscript.js

1<h1>Hello, World!</h1> 2<button>Play</button>

1body { padding: 1em; } 2h1 { color: #d6246e; } 3button { border-radius: 1em; }

1onclick = (e) => e.target.animate({ 2 outline: ['6px dotted #7a5cff', 3 '6px dotted #0000'], 4 outlineOffset: ['0px', '2em'], 5}, 700);

Preview

Hello, World! Play

Console

Nothing logged yet.

SavedAuto-run on
HTML CSS JS Playground

Write HTML, CSS and JavaScript and watch the page change as you type.
- Live preview
- Console
- Share by link
Open the playground
Node.js PlaygroundRun

index.js

1const express = require('express'); 2const app = express(); 3 4app.get('/todos', (req, res) => { 5 console.log(req.method, req.url); 6 res.json([ 7 { id: 1, task: 'Learn Node.js' }, 8 ]); 9}); 10 11app.listen(3000);

localhost:3000/todos

[ { "id": 1, "task": "Learn Node.js" } ]
No server is running.

ConsoleTerminal

node index.js › Server ready on port 3000 GET /todos

Server on port 3000Saved
GET /todos 200 OK
Node.js Playground

Run real Node.js, npm packages and Express servers in your browser.
- npm packages
- Live server preview
- Real terminal
Open the playground

PDF tools

Fifteen tools for documents. Nothing is uploaded — the work happens on your own device. All PDF tools →

Merge PDF Combine several PDFs into one, in any order. Split PDF Extract page ranges, or break it into single pages. Compress PDF Shrink a large file — losslessly, or hard for scans. Sign PDF Draw, type or upload a signature and place it. Organize PDF Drag pages into a new order, or reverse them. Rotate PDF Turn pages 90° and save the rotation for good. Crop PDF Trim the margins, by hand or automatically. Delete pages Remove what you do not need, keep the rest. PDF to JPG Render every page as a JPG or PNG image. JPG to PDF Turn photos and scans into a single document. Watermark PDF Stamp text or a logo across every page. Page numbers Number the pages, skipping the cover if you like. PDF to text Pull the text out and copy it or save a .txt. PDF metadata View, edit or strip title, author and keywords. Unlock PDF Remove a password you know, and the restrictions.

Image tools

Compress, convert and resize pictures. These need no library at all, so they work offline from the first visit. All image tools →

Compress image Make a picture smaller, with a before-and-after view. Convert image Move between PNG, JPG and WebP. Resize image Set exact dimensions, rotate and flip.

More developer tools

Utilities for the browser, next to the two playgrounds at the top. Nothing is sent to a server.

CSS Playground Build Flexbox, Grid, gradients and shadows visually. Regex Tester Test patterns with live highlighting and an explanation. JWT Decoder Decode a JSON Web Token and verify its signature. Base64 Encoder Encode and decode Base64, including files. URL Encoder Percent-encode and decode URLs and query strings. UUID Generator Generate v4, v7, v1, v3 and v5 UUIDs in bulk.

Free online tools that never upload your files

Most free tools on the web upload your file to a server, then watermark the result, cap how many you can do, or ask you to pay. These do the work on your own device instead, which is why they are free, unlimited and private — and why several of them keep working with no connection at all.

Browse the tools ↑ About Mehdi →

Nothing you open here is uploaded

Every tool on this page reads your file into the browser's own memory and does the work there. Nothing is transmitted, so there is no queue, no size cap and no daily limit — and it is why a contract, a scan or a private photo is safe to open in one.

Frequently asked questions

Are these really free?

Yes. No account, no paid tier, no usage limit and no watermark on anything they produce. They exist because the common alternatives do at least one of those things.

Do my files get uploaded?

No. Each tool works inside your browser and hands the result straight to your downloads. Nothing is transmitted at any point, which is the whole reason they have no limits.

Do they work offline?

The image tools do, from the very first visit — they need no library at all. The PDF tools fetch their engine the first time you use one, and work with no connection after that.

Is there a catch?

No advertising, no tracking of what you open, and nothing to buy. They were built for the author's students and are free for anyone.