Nothing leaves your device

Draws boxes and arrows as plain ASCII you can paste into a comment

A waveform audio editor that runs in the tab with nothing uploaded

Generates a random password or passphrase without leaving the page

Resizes hundreds of photos at once without uploading any of them

A blank page with a focus mode that dims everything but this sentence

A pile of one-click converters that never upload the file

Chains encoding, hashing and decryption steps into a repeatable recipe

One fast search box across a hundred API references, usable offline

Full diagram editor that works without an account or a saved file

Run SQL over your own CSV or Parquet file without uploading it

Hand-drawn-looking whiteboard that opens instantly with no sign-up

Opens and builds ZIP, RAR and 7z archives without uploading them

Decodes a JSON Web Token into readable header, claims and signature

Turns a Markdown outline into a collapsible mind map as you type

Write a diagram as text and watch it render beside you

Play the audio and type the transcript in the same window

Finds other browsers on your network and sends files straight to them

Opens a PSD, keeps the layers, and runs entirely in a browser tab

Makes the chart types nothing else offers — alluvial, beeswarm, treemap

Records your screen and webcam from a tab, saving straight to disk

Wraps a raw screenshot in a browser frame and a decent background

Reformats an unreadable SQL statement into something reviewable

Compare image compression settings side by side before you export

A Markdown editor with live preview that keeps working offline

Traces a PNG or JPEG into a scalable SVG inside the browser

Converts a table between CSV, JSON, Markdown, SQL and Excel

Infinite canvas that feels like a native app in a browser tab

Streams a file from your browser to theirs with no copy in between

Generates a word-based passphrase and shows how long it would take to crack

Open-source converter that handles images, audio and documents on your device

Runs an open language model inside your browser, nothing sent to a server

Runs OpenAI's Whisper speech recognition inside your own browser