Web tools
11 free tools that run in your browser. No installs, no accounts, and your files never leave your device.
Spotlight
A multi-file IDE that opens in a browser tab.
Write in 80+ languages on the same engine that powers VS Code. Preview Markdown, diff files, test APIs and run snippets — with your files kept on your device, not our servers.
Explorer
Built on Monaco — syntax highlighting, IntelliSense and folding for 80+ languages.
Work across several editor panes with horizontal and vertical splits.
Compare files side by side or inline with jump-to-change and whitespace controls.
Open local folders, download single files or export the whole workspace as a ZIP.
Shortcuts for formatting, tab switching, layouts, word wrap and the command palette.
Files, settings and history live in your browser — nothing is uploaded to us.
All web tools
Every tool below is free, opens instantly and works without an account.
Run untrusted code in 65+ languages, each in its own microVM.
Our code-execution platform and API. Every submission is isolated in a Firecracker microVM, with per-test verdicts streamed live. It powers Omni Compiler and the Online Code Editor's Run button.
Edit SVG visually and in code — at the same time.
A multi-file vector editor with node-level path editing and live two-way SVG code. Every change on the canvas updates the markup, and every markup edit flows back to the artwork.
A teleprompter that keeps pace with your voice.
Write or import a script and read hands-free. Voice tracking scrolls with how you actually speak, across languages, with camera recording and on-device storage built in.
Compile and judge code in 61 languages.
Run code against test cases on your phone with real verdicts — accepted, wrong answer, time limit and more. Every run executes on ls-judge in its own isolated microVM, across 114 language runtimes.
Turn WhatsApp chats into print-ready memory books.
Import an exported conversation and get a beautifully typeset PDF with photos, themes and keepsake stats. Parsing and rendering happen entirely in the browser — nothing is uploaded.
35+ CSS generators with live preview.
Gradients, shadows, glassmorphism, animations, flexbox and grid builders, colour converters and accessibility checks — each with instant preview and one-click copy.
Merge, split, compress and scan PDFs.
An all-in-one PDF toolkit on Android and the web: merge, split, compress, convert and scan documents with on-device text recognition.
Draw over any screen while you teach or present.
A free drawing overlay for tutorials, live sessions and quick annotations — multi-colour brushes, undo and redo, opacity control and shake-to-draw.
Watch algorithms and data structures work, step by step.
Interactive simulations of sorting, trees, graphs and more — built for students, teachers and interview preparation.
Convert images to Base64 in bulk.
Drop any number of images and copy Base64 output instantly. Conversion happens in your browser — nothing is uploaded.
In the workshop
We are working on a JSON formatter, a regex tester and an API request builder. If there is a tool you reach for every day and wish were simpler, tell us about it.
Most of our web tools also have a native Android app — same features, built for your phone.